Acta Limnologica Brasiliensia

(594 Artigos indexados)

Adult emergence of Phyllocycla Calvert, 1948 (Odonata: Gomphidae) in artificial environments - (2024)

Carolina Gomes Viana, Lucas Pereira-Moura, Daniel Silas Veras

Volume: 36 - Issue: 0

Resumo. Abstract Aim This study aimed to analyze aspects of adult emergence of Phyllocycla Calvert, 1948 (Odonata: Gomphidae) in artificial environments. Samplings were conducted in Sanharó stream, Caxias municipality, Maranhão State, Brazil. Methods Specimens were examined under a...

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Are functional freshwater Nematode traits a good tool for view an early succession on hard artificial substrate in a reservoir of Brazilian semiarid? - (2024)

Fábio Lucas de Oliveira Barros, Sebastião Tilbert, Taciana Kramer Pinto, Maria Cristina da Silva, Francisco José Victor de Castro, Miodeli Nogueira Júnior

Volume: 36 - Issue: 0

Resumo. Abstract Aim The Brazilian tropical semiarid is a biome with small freshwater ecosystems, often intermittent, acting as a mosaic in constant transformation between dry and rainy seasons. Meiobenthic communities play crucial roles in these environments, and understanding their colonization and...

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Assessing the occurrence of alien species on Brazilian freshwater ecosystems: insights from a comprehensive survey - (2024)

Anderson Oliveira Latini, Daniela Chaves Resende, Daniel Paiva Silva, Dilermando Pereira Lima-Junior

Volume: 36 - Issue: 0

Resumo. Abstract: Aim Assessing the damage caused to natural environments and native biodiversity by alien species is challenging. We tested whether the number of detections of alien species is affected by total alien or total invader alien species richness, considering the importance of predicting...

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Assessing the taxonomic sufficiency of macroinvertebrate communities and their potential to distinguish the impacts of land use on lowland streams in Uruguay - (2024)

Bárbara Suárez, Margenny Barrios, Franco Teixeira de Mello

Volume: 36 - Issue: 0

Resumo. Abstract: Aim Macroinvertebrates are extensively employed as bioindicators for evaluating how stream ecosystems respond to alterations in physical and chemical habitats caused by human activity. Although family-taxonomic level is usually used to identify macroinvertebrates in biomonitoring...

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Bacterial community dominance in a sewage-driven eutrophic coastal lagoon by next generation sequencing: initial findings - (2024)

Analy Machado de Oliveira Leite, Mauricio Mussi Molisani, Renan Monte de Oliveira, Paula Veronesi Marinho Pontes, Rodrigo Nunes da Fonseca, Jackson de Souza Menezes, Lupis Ribeiro Gomes Neto, Francisco Assis Esteves

Volume: 36 - Issue: 0

Resumo. Abstract: This study investigates the presence of bacterial dominance in one of the most studied sewage-driven eutrophic coastal lagoons, the Imboassica Lagoon in Macaé (RJ), Brazil, utilizing high-throughput sequencing of 16S rDNA. Water samples were collected from three sites within the...

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Beta diversity of macroinvertebrate assemblages associated with aquatic macrophytes in shallow lakes within a tropical floodplain-dammed river - (2024)

Marcos Callisto, Ricardo Solar, Daiana dos Reis Pelegrine, Marden Seabra Linares

Volume: 36 - Issue: 0

Resumo. Abstract: Aims We assessed the beta diversity of macroinvertebrates associated with aquatic macrophytes in a dam-regulated river floodplain. We tested two hypotheses: (1) macroinvertebrates associated with aquatic macrophytes have higher beta diversity (higher turnover and nestedness components)...

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Comparative analysis of ex situ zooplankton hatching methods - (2024)

Daniel Nino Flores-Mendez, María Florencia Gutierrez

Volume: 36 - Issue: 0

Resumo. Abstract: Aims This study aims to analyze the efficiency of two novel methods for ex situ zooplankton hatching experiments, compared with a traditional one. Both proposed methods were specifically designed to minimize sediment resuspension during the sampling of hatched individuals when no...

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Concentrations of metals in water, sediments and aquatic macrophytes in a river located in a region with a hot semi-arid climate - (2024)

Camila Tâmires Alves Oliveira, Antonio Fernando Monteiro Camargo, Eulene Francisco da Silva, Gustavo Gonzaga Henry-Silva

Volume: 36 - Issue: 0

Resumo. Abstract Aim i) is there a difference in the level of contamination in the different parts of the basin in the water, sediment and aquatic macrophytes compartments? and ii) do the three compartments respond similarly to metal contamination? Methods Samples of water, sediment and aquatic...

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Distribution of invasive bivalves in Paraguay: filling the gaps in the heart of South America - (2024)

Igor Christo Miyahira, Rebeca Carballo, Héctor Samuel Vera-Alcaraz, Cristhian Clavijo

Volume: 36 - Issue: 0

Resumo. Abstract La Plata Basin is the second largest hydrographic system in South America but the most impacted by invasive species of molluscs in the continent. Paraguay is a land-surrounded South American country with scarce information about malacological fauna. To fill some of these gaps, a large...

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Ecophysiological investigation of the cyanobacteria Anabaenopsis elenkinii and Limnospira platensis: predominant species in saline/alkaline lakes of the Pantanal Wetland - (2024)

Kleber Renan de Souza Santos, Guilherme Scotta Hentschke, Arnaldo Yoso Sakamoto, Luciana Retz de Carvalho, Célia Leite Sant’Anna

Volume: 36 - Issue: 0

Resumo. Abstract: Aim In this study, we investigated the distribution of Anabaenopsis elenkinii and Limnospira platensis in the saline-alkaline lakes of Nhecolândia (Pantanal wetland) and evaluated the impact of pH, temperature, and nitrogen on their growth and development to understand their...

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Environmental monitoring of sediment quality and trace metal status in a tropical perennial river in South India: an exploration using multivariate analysis - (2024)

Dani Benchamin, Sreejai Raghavan, Arya Madhu Sajidevi

Volume: 36 - Issue: 0

Resumo. Abstract: Aim The Kallada River is exposed to several kinds of pollution from domestic, civic, recreational, and agricultural activities and human settlements. The objectives of the study were to assess sediment quality, especially the trace metal concentration and to compare with the previous...

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Environmental variables as predictors of fish community composition in semiarid aquatic systems - (2024)

Elvio Sergio Figueredo Medeiros, Marcio Joaquim da Silva, Telton Pedro Anselmo Ramos, Robson Tamar Costa Ramos

Volume: 36 - Issue: 0

Resumo. Abstract Aim To understand the distribution of fish species and their use of habitat, a range of environmental variables were evaluated as predictors of fish assemblage composition and richness in tropical semiarid aquatic systems. Methods We surveyed the species composition of fish assemblages...

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Factors stimulating the hatching of resting eggs and their contribution to the composition of cladoceran assemblages in tropical temporary lagoons - (2024)

Wesley Luiz Guimarães, Eliana Aparecida Panarelli, Natan Guilherme dos Santos, Maria Stela Maioli Castilho-Noll

Volume: 36 - Issue: 0

Resumo. Abstract: Aim We aimed to verify the contribution of cladocerans’ resting eggs to the active communities of temporary lagoons and, through an experiment, identify which conditions induce high hatching rates. Methods Cladocera assemblages were sampled in four temporary lagoons in the Turvo...

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First record of the Southern Platyfish, Xiphophorus maculatus (), (Cyprinodontiformes: Poeciliidae) in coastal streams of Venezuela and implications for conservation - (2024)

Douglas Rodríguez-Olarte, Críspulo Julián Marrero, Donald Charles Taphorn, Jorge Luis Coronel

Volume: 36 - Issue: 0

Resumo. Abstract Several fishes of the family Poeciliidae are commonly produced in ornamental aquaculture and also used for pest control, leading to their introduction in numerous countries. Many of these species exhibit tolerance and invasiveness, as exemplified by Xiphophorus maculatus (Günther,...

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First report of harmful Microcystis sp. and microcystin in two tributaries of Paraná River in Misiones, Argentina - (2024)

María de los Angeles Kolman, María Laura Miño, Isaias Emanuel Kunz, Pedro Dario Zapata

Volume: 36 - Issue: 0

Resumo. Abstract Aim Characterize cyanobacterial accumulations detected for the first time from November 2020 to February 2022 along the coastal zone of the Paraná River and in the Zaimán and Mártires streams in Posadas (Misiones, Argentina), by identifying the dominant species,...

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Fish parasites from a neotropical tidal river within a biodiversity hotspot - (2024)

Luddy Searom Carias de Moraes, Ana Paula Lula Costa, Ricardo Massato Takemoto, Andre Andrian Padial

Volume: 36 - Issue: 0

Resumo. Abstract: Aim We investigated the ichthyofauna parasite component community across a gradient of anthropogenic pressures of the Guaraguaçu River, south Brazil, a Neotropical river of central importance for biodiversity conservation. Methods After fish sampling, all fish were identified,...

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Flood did not cause the taxonomic and functional homogenization of Chironomidae (Diptera) community in a Neotropical floodplain - (2024)

João Pabllo Silva da Silva, Danielle Katharine Petsch

Volume: 36 - Issue: 0

Resumo. Abstract: Aim We investigated the hypothesis that flood decreases the taxonomic and functional beta diversity of Chironomidae (Diptera) larvae among floodplain lakes, causing biotic homogenization. Methods We collected benthic samples using a modified Petersen grab in 18 lakes in a flood period...

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Hydrologic cycle influence on desmid abundance in a shallow floodplain lagoon in the Brazilian semiarid region - (2024)

Maria Aparecida dos Santos, Carla Ferragut, Daniela Mariano Lopes da Silva, Carlos Wallace do Nascimento Moura

Volume: 36 - Issue: 0

Resumo. Abstract Aim Knowledge of hydrological characteristics is essential for understanding ecological processes in floodplains, which can support sustainable management. We evaluated environmental variations in a shallow floodplain lagoon located in the Chapada Diamantina, Andaraí, Bahia. We...

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Ichthyoplankton distribution set by different environments shapes in a coastal freshwater lagoon - (2024)

Carolina Antonieta Lopes, David Augusto Reynalte-Tataje, Alex Pires de Oliveira Nuñer

Volume: 36 - Issue: 0

Resumo. Abstract Aim This study aimed to evaluate the spatial and temporal distribution of ichthyoplankton in the Peri Lagoon, a coastal freshwater lagoon in Brazil. Methods Ichthyoplankton samples were collected every two months from June 2008 to April 2010 with 500 µm conical-cylindrical...

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Influence of eucalyptus plantations on benthic macroinvertebrate assemblages in neotropical springs - (2024)

Sheila Sousa de Jesus Peixoto, Luiza Pedrosa Guimarães, Roberto da Gama Alves

Volume: 36 - Issue: 0

Resumo. Abstract Aim The high sensitivity of springs to anthropic impacts is largely due to the high existing aquatic-terrestrial connectivity. The degradation of these ecosystems can be caused by land use, such as eucalyptus monoculture. The aim of this study was to test the influence of Eucalyptus...

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Main predictors of phytoplankton occurrence in lotic ecosystems - (2024)

Maria Clara Pilatti, Gabriela Medeiros, Andre Andrian Padial, Mailor Wellinton Wedig Amaral, Ricardo Guicho, Norma Catarina Bueno

Volume: 36 - Issue: 0

Resumo. Abstract: Aim Our goal was to relate the phytoplankton metacommunity to its possible determinants in a micro watershed: (I) determinants related to landscape-scale filtering, (II) determinants referring to local microhabitat filtering, (III) determinants referring to previous colonization, and...

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Phenometric predictors of Pontederia crassipes biomass under natural conditions in the Paraná River - (2024)

Sylvina Lorena Casco, Violeta Amancay Zambiasio, Eduardo Adolfo Porcel, Luciana Irene Gallardo

Volume: 36 - Issue: 0

Resumo. Abstract: The water hyacinth, Pontederia crassipes, is a free-floating aquatic plant native to South America, which has colonized tropical rivers in several continents and has become dominant in floodplains. Aim This study aimed to evaluate the relationship between leaf length and leaf biomass...

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Phytoplankton community diversity, dominance, and rarity: a case study of tropical urban lakes - (2024)

Marlon Pablo Miranda Martins, Khályta Willy da Silva Soares, Priscilla de Carvalho, Jascieli Carla Bortolini

Volume: 36 - Issue: 0

Resumo. Abstract Aim The aim of this study was to evaluate how phytoplankton community diversity, dominance, and rarity are influenced by different local environmental conditions in urban lakes. We expect that richness will be negatively influenced in lakes with higher nutrient concentrations and high...

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Phytoplankton in lake water quality assessment: a review of scientific literature based on bibliometric and network techniques - (2024)

Victor Stive Flores-Gómez, Carmen Villanueva Quispe, Dennys Arpasi Ordoño, Adilson Ben da Costa, Eduardo A. Lobo

Volume: 36 - Issue: 0

Resumo. Abstract Aim This study aims to analyze the scientific literature on phytoplankton in assessing lake water quality, based on bibliometric and network techniques. Methods PRISMA criteria were adopted to produce reliable results. The Scopus and Web of Science databases were consulted to retrieve...

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Rainfall increases the biomass and drives the taxonomic and morpho-functional groups variability of phytoplankton in a subtropical urban lake - (2024)

Matheus Vieira da Silva, Susicley Jati

Volume: 36 - Issue: 0

Resumo. Abstract: Aim To explore the short-term effects of rainfall events on the biomass, density, and richness of the phytoplankton community during dry and rainy periods, as well as on the selection and response of Morphology-Based Functional Groups (MBFG). Methods The phytoplankton community and...

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Rapid Assessment Protocol for sandstone headwater streams: a versatile and effective environmental assessment tool - (2024)

Vivian de Mello Cionek, Gustavo Henrique Zaia Alves, Patricia Almeida Sacramento, Antonio Carlos Beaumord, Evanilde Benedito

Volume: 36 - Issue: 0

Resumo. Abstract: Aim In this study we validated a tool to assess and monitor streams ecosystems to subsidize future research, governmental surveillance and citizen science activities. Our primary objective was to (i) provide improvements and adaptations of the Rapid Assessment Protocol (RAP) proposed...

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Reproductive aspects of females of Leporinus lacustris Campos, 1945 (Characiformes, Anostomidae) in a Neotropical floodplain - (2024)

Amanda Borges dos Santos Schmidt, Herick Soares de Santana, Claudenice Dei Tos

Volume: 36 - Issue: 0

Resumo. Abstract: Aim This study evaluates the reproduction and fecundity of Leporinus lacustris in upper Paraná River floodplain environments with the objectives to (i) recognize the germ cells of folliculogenesis and oogenesis; (ii) characterize reproductive phases; (iii) investigate oocyte...

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Sandbar breaching promotes long lasting changes on limnological dynamics along the water column of a tropical coastal lagoon - (2024)

Jorge Gabriel Fernandes Genovez, Théo Dias Arueira, Luís Alfredo dos Santos Prado, Giovanna Figueiredo Lima da Silva, Claudio Cardoso Marinho, André Luiz dos Santos Fonseca, Murilo Minello, Daniel Basílio Zandonadi, Rodrigo Lemes Martins, Francisco de Assis Esteves, Anderson da Rocha Gripp

Volume: 36 - Issue: 0

Resumo. Abstract Aim In this study, we investigated the impact of an episodic marine intrusion on the water column characteristics of Jurubatiba lagoon, a tropical coastal ecosystem, for 12 months following a sandbar breaching event to elucidate the duration of its effects. Methods Monthly, we sampled...

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Shallow reservoirs in urban perimeter: evaluation of trophic status and relations with the zooplanktonic community - (2024)

Heytor Lemos Martins, Eliana Aparecida Panarelli, Jaqueline Souza Borges, Vanesca Korasaki, Rodrigo Ney Millan

Volume: 36 - Issue: 0

Resumo. Abstract: Aim The zooplankton community is used as a bioindicator of environmental changes and can be an indicator of trophic status in aquatic environments through changes in the composition of the community. The objective of this work was to study the variation of shallow reservoir systems in...

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Spatial variation in abiotic conditions and fish diversity in coastal lagoons, Southern Brazil - (2024)

Luiz Guilherme Schultz Artioli, Clarice Benhardt Fialho

Volume: 36 - Issue: 0

Resumo. Abstract Aim To compare abiotic variables and fish assemblage descriptors (species composition, richness, dominance and diversity) among coastal lagoons of the Tramandaí river system, southern Brazil. Methods Water and fish samples were taken monthly from April 2009 to March 2010 in...

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Spatial variation, more than ontogenetic, explains the diet of Bryconamericus exodon in two Pantanal rivers - (2024)

Karoline Aparecida de Sena, Yzel Rondon Súarez

Volume: 36 - Issue: 0

Resumo. Abstract Aim Studies of natural variations in fish diet allow, in turn, a better understanding of environmental changes along the hydrological cycle that can affect resources and, hence, biodiversity conservation. With this in mind, the present study aimed to understand how spatial and...

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Status of studies about Brazilian bioindicator fishes, a review - (2024)

Caroline de Paula Batista, Agatha de Almeida Ferreira, Guilherme José da Costa Silva

Volume: 36 - Issue: 0

Resumo. Abstract: Aim The freshwater environment is indeed diverse and complex, and it faces numerous challenges due to human activities. One approach to evaluating these human interventions is through the use of bioindicators, with fish being one of the key groups studied in the aquatic environment....

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Streams pollution in a luxury tourism municipality in the Serra da Mantiqueira (Southeast Brazil) - (2024)

Fernando Shiguero Katayama, Laís Samira Correia Nunes, Antonio Fernando Monteiro Camargo

Volume: 36 - Issue: 0

Resumo. Abstract Aim Our aim was to analyze the limnological characteristics of streams located in a luxury tourism municipality in the Serra da Mantiqueira (Southeast Brazil). Methods We analyzed water physical and chemical variables of six sampling sites located in three streams of the...

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The fish fauna of Itutinga reservoir, 30 years after the first survey - (2024)

Andressa Mendes Silva-Sene, Ivo Gavião Prado, Carina Patez Porto, Paulo Santos Pompeu

Volume: 36 - Issue: 0

Resumo. Abstract: Aim Monitoring altered environments is crucial to understand the impacts and the possible changes in the local fish fauna. Therefore, we aimed to compare the ichthyofauna within a 67-year-old small run-of-the-river reservoir with surveys carried out in 1986 and 2019-2021 and update the...

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The ichthyofauna of the Potiritá River basin: assessing the conservation status in a mining area in the Eastern Amazon - (2024)

Thiago Augusto Pedroso Barbosa, Bruno da Silveira Prudente, Marina Barreira Mendonça, Gilberto Nepomuceno Salvador, Luciano Fogaça de Assis Montag, Alberto Akama

Volume: 36 - Issue: 0

Resumo. Abstract Aim Considering the importance of knowing the organisms that make up the environments impacted by human activities, we aimed to create an inventory of the ichthyofauna of a bauxite mining area in the Eastern Amazon in this work. Methods Specimens were collected with sieves, trawls, and...

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Use of submerged trunks by stream fishes in the Lower Negro River, Amazon - (2024)

Montgomery Garrido, Thaynara Sofia Gomes Vieira, Chiara Lubich, Kedma Yamamoto

Volume: 36 - Issue: 0

Resumo. Abstract Fish make use of different microhabitats, such as submerged trunks, branches, foliage, crevices and stones, with different purposes, in search of shelter, refuge, food and even as a substrate for reproduction. The present study aimed to increase the knowledge about fish species that make...

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Extemporaneous environmental legislation: an analysis of the conflicts underlying Law 3824/1960 on coarse wood removal in Brazilian artificial reservoirs - (2024)

Lívia Helena Tonella, Oscar Barroso Vitorino Junior, Dilermando Pereira Lima Junior, Luiz Carlos Gomes, Fernando Mayer Pelicice, Angelo Antonio Agostinho

Volume: 32 - Issue: 0

Resumo. Abstract This article discusses the purpose and effects of Law 3824/1960, which makes mandatory the removal of vegetation and consequent cleaning of land sites subject to flooding by the construction of artificial reservoirs. The importance of this reflection is to avoid having a law that is...

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Seasonal variation on diet of juvenile Elops saurus Linnaeus, 1766 (Ladyfish) in the Parnaiba River Delta - (2024)

Tatiane Araujo Santos, Thamires Souza Gonçalves, Patricia Silva do Nascimento, Cézar Augusto Freire Fernandes, Francisca Edna de Andrade Cunha

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Identify seasonal variations in the diet of juvenile living in the estuary of the Parnaíba River Delta. Methods Food items were identified through analysis of stomach contents, and later submitted to analysis by regular methods for Frequency of Occurrence (FO), Frequency...

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Advances and limitations of using satellites to monitor cyanobacterial harmful algal blooms - (2024)

Igor Ogashawara

Volume: 31 - Issue: 0

Resumo. Abstract The use of satellites for monitoring forests is common and well-known practice. However, the operational remote monitoring of water quality from space is still under development. In the United States of America (USA), the use of this type of data is just now being applied to...

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Advancing impact evaluation in applied limnology - (2024)

Luiz Guilherme dos Santos Ribas, André Andrian Padial, Luis Mauricio Bini

Volume: 31 - Issue: 0

Resumo. Abstract Accurate impact evaluations of different interventions are paramount in environmental sciences. In this context, the main challenge is to identify causal relationships to understand how different interventions affect the systems of interest. For this task, the counterfactual thinking can...

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Allelopathic effects of the aquatic macrophyte Ceratophyllum demersum L. on phytoplankton species: contrasting effects between cyanobacteria and chlorophytes - (2024)

Cihelio Alves Amorim, Rafael Henrique de Moura-Falcão, Celina Rebeca Valença, Vitor Ricardo de Souza, Ariadne do Nascimento Moura

Volume: 31 - Issue: 0

Resumo. Abstract Aim To assess the allelopathic effects of the submerged macrophyte Ceratophyllum demersum on four strains of phytoplankton species: two cyanobacteria (Microcystis aeruginosa - microcystin producing and M. panniformis - non-microcystin producing), and two chlorophytes (Ankistrodesmus...

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Big things come in small packages: why limnologists should care about small ponds - (2024)

Melissa L. Mullins, Robert D. Doyle

Volume: 31 - Issue: 0

Resumo. Abstract There is a substantial, and increasing, body of evidence that small ponds are critically important in diverse landscapes around the world by providing habitat, processing carbon, and mediating hydrological and nutrient fluxes to other larger surface waters (rivers, lakes, coastal). They...

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Biomass and abiotic variables change in phytotelmic environment in the tank-bromeliad Nidularium longiflorum Ule in tropical forest - (2024)

Karina Margaret Silva das Neves, Armando Reis Tavares, llka Schincariol Vercellino, Carla Ferragut

Volume: 31 - Issue: 0

Resumo. Abstract Aim Phytotelm plays an important role in plant growth and ecosystem functioning, but this natural aquatic microcosm is poorly known. We evaluated the seasonal (dry and rainy seasons) and spatial variations (forest trail and stream sites) of the phytotelm in Nidularium longiflorum,...

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Habitat, limnological signatures and spatial modeling: a zoning proposal for the Curuá-Una hydroelectric reservoir, Pará, Brazil - (2024)

Juciley de Almeida Santos, Keid Nolan Silva Sousa, Paulo Roberto Brasil Santos, Joelson Leal de Lima, Rivolo de Jesus Bacelar

Volume: 31 - Issue: 0

Resumo. Abstract Aim The objective of this work is to characterize, spatially model and to perform the zoning of the aquatic environment in the Curuá-Una HPP reservoir, in the state of Pará, in the Brazilian Amazon. Methods The data were collected from 77 sampling points distributed over...

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Longitudinal dimensions of land-use impacts in riverine ecosystems - (2024)

Rafael Feijó-Lima, Eugenia Zandonà, Bruna Suelen da Silva, Flavia Tromboni, Timothy Peter Moulton, Steven Arnold Thomas

Volume: 31 - Issue: 0

Resumo. Abstract: Aim Rivers are linked longitudinally via the flow of water and the spatial dimensions of the changes in local riparian vegetation are still poorly understood. Recent modifications to the Native Vegetation Protection Law allow reduction of lateral buffer strips and amnesty for riparian...

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Mollusks associated with the Avicennia schaueriana (Magnoliophyta: Acanthaceae) roots of a hypersaline estuary in northeastern Brazil - (2024)

Ana Priscila Amancio Muniz, Rafaela Cristina de Souza Duarte, Ellori Laíse Silva Mota, Jessica de Oliveira Lima, Thelma Lúcia Pereira Dias

Volume: 31 - Issue: 0

Resumo. Abstract Aim Avicennia schaeuriana is one of the six species that composes the mangrove forests of Brazil and form mangrove fringes along waterways. The mangrove-roots of the A. schaeuriana act as one of the microhabitats used by the invertebrate biodiversity of the estuarine ecosystem. The...

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Monitoring simplification in plankton communities using different ecological approaches - (2024)

Carla Albuquerque de Souza, Karine Borges Machado, João Carlos Nabout, Daphne Heloisa de Freitas Muniz, Eduardo Cyrino Oliveira-Filho, Cleber Nunes Kraus, Rômulo José da Costa Ribeiro, Ludgero Cardoso Galli Vieira

Volume: 31 - Issue: 0

Resumo. Abstract Aim This study aimed to answer: (i) can phytoplankton communities be used as surrogate of zooplankton communities?; (ii) can we use ecological approaches like functional groups (FG) or morphofunctional classification (MBFG) as surrogate for phytoplankton species?; (iii) can we use...

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Nutritional value changes in response to temperature, microalgae mono and mixed cultures - (2024)

Frederico Pacheco Militão, Valéria de Oliveira Fernandes, Kathiani Victor Bastos, Aline Paternostro Martins, Pio Colepicolo, Levi Pompermayer Machado

Volume: 31 - Issue: 0

Resumo. Abstract Aim The response of mixed cultures and monocultures of Pseudopediastrum boryanum (Turpin) E. Hegewald and Scenedesmus obliquus (Turpin) Kützing was assessed in the laboratory at three different temperatures: 20, 30 and 40 °C. The change in biomass and biochemical composition of...

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Post-fire consequences for leaf breakdown in a tropical stream - (2024)

Renan de Souza Rezende, Cristiano Queiroz de Albuquerque, Andrezza Sayuri Victoriano Hirota, Paulo Fernandes Roges Souza Silva, Ricardo Keichi Umetsu, Helena Soares Ramos Cabette, Paulino Bambi, Natália Guedes, Cássia Alves Lima-Rezende, José Francisco Gonçalves-Júnior

Volume: 31 - Issue: 0

Resumo. Abstract Aim Wildfire is a natural pulsed disturbance in landscapes of the Savannah Biome. This study evaluates short-term post-fire effects on leaf litter breakdown, the invertebrate community and fungal biomass of litter from three different vegetal species in a tropical stream. Methods...

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Spatial and temporal trends in freshwater fish research: the case of three neotropical river basins from Goiás State, Central Brazil - (2024)

Rodrigo Assis Carvalho, Francisco Leonardo Tejerina-Garro

Volume: 31 - Issue: 0

Resumo. Abstract Aim In this paper, we conducted a scientometric analysis on published studies related to freshwater fish species at Goiás State to evaluate: i) their spatial and temporal trends; ii) areas of knowledge; iii) scientific journals where these papers were published and their...

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The Ecology and Conservation of Wild Rice, Zizania palustris L., in North America - (2024)

David Dean Biesboer

Volume: 31 - Issue: 0

Resumo. Abstract Wild rice is an enigmatic plant species in the upper northern Midwestern U.S. Wild rice (Zizania palustris L.) is widespread in the region. However, it is both a wild species and a semi-domesticated crop. It is enigmatic because it is grown and harvested by machine in large paddies by...

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The role of sediments in the carbon and pollutant cycles in aquatic ecosystems - (2024)

Simone Jaqueline Cardoso, Gabrielle Rabelo Quadra, Nathália da Silva Resende, Fábio Roland

Volume: 31 - Issue: 0

Resumo. Abstract Aim Anthropogenic modifications in the landscape are accelerating biogeochemical cycles and causing unbalances in terrestrial and aquatic ecosystems with still unknow impacts on biotic and abiotic processes. Therefore, there has been increasing scientific interest in the links between...

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The structuring role of macrophytes on plankton community composition and bacterial metabolism in a large subtropical shallow lake - (2024)

Ng Haig They, David da Motta Marques

Volume: 31 - Issue: 0

Resumo. Abstract Aim We aimed at investigating changes in major groups of plankton (bacterioplankton, phytoplankton and zooplankton) and bacterioplankton metabolism along a transect covering a littoral, macrophyte dominated zone to a pelagic, phytoplankton dominated zone in the large subtropical shallow...

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Tunnel vision in current chemicals management cannot deal with the unknown risk of synthetic chemicals in aquatic systems - (2024)

Anna Sobek, Emma Undeman

Volume: 31 - Issue: 0

Resumo. Abstract Chemicals management is focused around the hazard, exposure and risk assessment of single chemicals. This is a slow process which cannot keep pace with chemical innovation and development of use. Environmental monitoring focuses on few, and well-known, chemicals. As a consequence, the...

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Wastewater infrastructure and the ecology and management of freshwater systems - (2024)

Krista Arminty Capps

Volume: 31 - Issue: 0

Resumo. Abstract Globally, freshwater resources are influenced by inputs of energy, nutrients, and pollutants from human wastewater. Local resource managers and policy-makers are tasked to address ecological and human-health concerns associated with aging and obsolete water infrastructure using limited...

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A simple non-destructive method for estimating aboveground biomass of emergent aquatic macrophytes - (2024)

Laís Samira Correia Nunes, Antonio Fernando Monteiro Camargo

Volume: 29 - Issue: 0

Resumo. Abstract: Aim Non-destructive methods for estimating aquatic macrophytes biomass may be employed by using indirect measurements, especially in experimental studies, thus enabling the conservation of plant samples. It is possible to estimate macrophyte biomass by developing mathematical equations...

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Seasonal and spatial variation of the epilithic diatoms: case study of an organic pollution gradient in a subtropical region of southern Brazil - (2024)

Saionara Eliane Salomoni, Odete Rocha, Lezilda Carvalho Torgan

Volume: 29 - Issue: 0

Resumo. Abstract: Aim This study aimed to understand the seasonal variation of epilithic diatoms in the Gravataí River regarding their composition and density along the river, as well as the respective relationships with local limnological variables. Methods The diatoms were sampled quarterly...

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Assessing the impacts of mining activities on zooplankton functional diversity - (2024)

Francisco Wagner Araujo Moreira, Mariângela Garcia Praça Leite, Maria Augusta Gonçalves Fujaco, Fellipe Pinheiro Chagas Mendonça, Larissa Paraguassú Campos, Eneida Maria Eskinazi-Sant’Anna

Volume: 28 - Issue: 0

Resumo. Abstract Aim Mining activities generate countless environmental impacts, including heavy-metal contamination, sorting and increased turbidity. In aquatic ecosystems these impacts can drastically affect the initial links of the food chain, such as zooplankton. Methods To evaluate how the...

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Benthic invertebrates nestedness in flood and drought periods in a Neotropical floodplain: looking for the richest environments - (2024)

Gisele Daiane Pinha, Danielle Katharine Petsch, Flávio Henrique Ragonha, Renata Guglielmetti, Camila Gentilin Bilia, Rafael Prandini Tramonte, Alice Michiyo Takeda

Volume: 28 - Issue: 0

Resumo. Abstract Aim Floodplains are among the most biologically diverse systems in the world, where hydrological regime is recognized as crucial to structure aquatic communities. We predicted that i) structure of benthic metacommunity is nested in the drought and random in the flood season in a...

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Benthic macroinvertebrates as bioindicators of water quality in Billings Reservoir fishing sites (SP, Brazil) - (2024)

José Ricardo Baroldi Ciqueto Gargiulo, Cacilda Thais Janson Mercante, Ana Lucia Brandimarte, Luciana Carvalho Bezerra de Menezes

Volume: 28 - Issue: 0

Resumo. Abastract: Aim The Billings Reservoir is the largest reservoir in the metropolitan region of São Paulo and has multiple uses, including artisanal fishing. Its surroundings present intense occupation, resulting in various environmental impacts. Although the water is degraded, affecting the...

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Can a one-sampling campaign produce robust results for water quality monitoring? A case of study in Itupararanga reservoir, SP, Brazil - (2024)

Frederico Guilherme de Souza Beghelli, Marcelo Luiz Martins Pompêo, Mônica Páscoli, Vivian Silva Lira, Renata de Lima, Viviane Moschini-Carlos

Volume: 28 - Issue: 0

Resumo. Abstract Aim: The aim of this study was to conduct a rapid and comprehensive analysis of the reservoir using physical, chemical and biological variables comprising water and sediment as also to verify if a one-sampling campaign can produce information that is robust enough for monitoring...

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Colonization by benthic macroinvertebrates in two artificial substrate types of a Riparian Forest - (2024)

Lívia Borges dos Santos, Cyntia Goulart Côrrea Bruno, Jean Carlos Santos

Volume: 28 - Issue: 0

Resumo. Abstract: Aim To analyze the efficiency of organic and inorganic substrates in samples of benthic macroinvertebrates of riparian forests from the Cerrado. Specific objectives (i) characterize the ecological succession and taxonomic richness of benthic macroinvertebrates in stream affluent of a...

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Comparing two biological indexes using benthic macroinvertebrates: positive and negative aspects of water quality assessment - (2024)

Vinicius Moraes Rodrigues, Eliane Pintor de Arruda, André Cordeiro Alves dos Santos, Monica Jones Costa

Volume: 28 - Issue: 0

Resumo. Abstract: Aim The aim of the present study, was to apply two biological indexes based on benthic macroinvertebrates (BMWP and ICB RES-P) using as model the Itupararanga Reservoir to know what the advantages and disadvantages of the application of each index in that environment. Methods The...

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Diel variation in the structure of fish assemblages in south western Amazon streams - (2024)

Igor David da Costa, Wesclen Vilar Nogueira

Volume: 28 - Issue: 0

Resumo. Abstract: Aim We investigate the influence of luminosity, habitat conservation and pluviometric periods in fish assemblages of in pasture and forest small streams in western amazon. Methods Sampling was conducted every two months from July 2013 to April 2014 in nine first- and second-order...

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Distribution of benthic centric diatom Pleurosira laevis (Compère, 1982) in different substrate type and physical and chemical variables - (2024)

Moslem Sharifinia, Zohreh Ramezanpour, Javid Imanpour Namin

Volume: 28 - Issue: 0

Resumo. Abstract: Aim This contribution reports the first regional occurrence of Pleurosira laevis in the Masuleh River, Iran and additionally describes the pattern of occurrence along the Masuleh River and among four substrate types. The aim of this study was to assess the effects of substrate type and...

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Environmental drivers of the benthic macroinvertebrates community in a hypersaline estuary (Northeastern Brazil) - (2024)

Carlinda Railly Ferreira Medeiros, Annyelle Kelly da Silva Costa, Caroline Stefani da Silva Lima, Jacicleide Macedo Oliveira, Marcos Medeiros Cavalcanti Júnior, Maxciell Ricardo Azevedo da Silva, Rafaela Santos Dias Gouveia, José Iranildo Miranda de Melo, Thelma Lúcia Pereira Dias, Joseline Molozzi

Volume: 28 - Issue: 0

Resumo. Abstract Introduction The estuarine community of benthic macroinvertebrates spatially varies in response to changes in environmental variables in these ecosystems. Understanding this variability helps our understanding the mechanisms structuring these communities. Aim Assess the structural...

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Fish-based Index of Biotic Integrity for wadeable streams from Atlantic Forest of south São Paulo State, Brazil - (2024)

Mauricio Cetra, Fabio Cop Ferreira

Volume: 28 - Issue: 0

Resumo. Abstract: Understanding the relationship between environmental quality of streams and biological integrity of fish assemblages is critical to successful ecosystem management. Aim We adapted the Index of Biotic Integrity (IBI) using ecological data of the fish assemblages that occur in headwater...

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Flood pulse are the main determinant of feeding dynamics and composition of Odontostilbe pequira (Characiformes: Characidae) in southern Pantanal, Brazil - (2024)

Andréa Fernanda Lourenço da Silva Scanferla, Yzel Rondon Súarez

Volume: 28 - Issue: 0

Resumo. Abstract Aim This study characterized the diet of Odontostilbe pequira in Porto Murtinho, Pantanal, Brazil, and evaluated the existence of spatial, temporal and ontogenetic variation in feeding. Methods A total of 303 individuals were analyzed from February 2009 through January 2010, and the...

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Fluvial lateral environments in Río de La Plata basin: effects of hydropower damming and eutrophication - (2024)

José Roberto Debastiani Júnior, Danilo Augusto de Oliveira Naliato, Gilmar Perbiche-Neves, Marcos Gomes Nogueira

Volume: 28 - Issue: 0

Resumo. Abstract Aim: Identify large-scale limnological patterns in lateral water bodies of Río de La Plata Basin, considering the influence of river damming and urban conglomerates. Methods Samplings were performed in a broad spatial scale (along 16 latitude degrees) during two seasonal periods...

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Gas emission from anaerobic decomposition of plant resources - (2024)

Marcela Bianchessi da Cunha-Santino, Alexandre Luccas Bitar, Irineu Bianchini Junior

Volume: 28 - Issue: 0

Resumo. Abstract: Aim The aim of this study was to quantify the emission rates of gases resulting from the anaerobic decomposition of different plant resources under conditions usually found in sediments of tropical aquatic systems and drained organic soils. Methods Incubations were prepared with green...

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Importance of calibration for mathematical modeling of self-purification of lotic environments - (2024)

Marcio Ricardo Salla, Lucianno Eduardo Fernandes, Carlos Eugênio Pereira, Hélio Correia da Silva Jhunior, Guilherme de Lima

Volume: 28 - Issue: 0

Resumo. Abstract: Aim To demonstrate the importance of calibration in mathematical modeling of self-purification in lotic environments, this study simulated the behavior of various parameters in a river with average annual flows between 4.0 and 32.0 m3.s-1, in a segment downstream from the entry of...

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Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams - (2024)

Luiz Ubiratan Hepp, Frederico Machado Urbim, Gabriela Tonello, Rafael Chaves Loureiro, Tanise Luisa Sausen, Rodrigo Fornel, Rozane Maria Restello

Volume: 28 - Issue: 0

Resumo. Abstract Aim Our aim in this study was to evaluate the effects of land use in drainage basins of the streams on the taxonomic and functional composition of aquatic invertebrate communities associated in leaf litter. Methods We evaluated the colonisation of invertebrates in the incubated plant...

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Inter-annual variability on the water quality in the Lower São Francisco River (NE-Brazil) - (2024)

Paulo Ricardo Petter Medeiros, Geórgenes Hilário Cavalcante, Nilva Brandini, Bastiaan Adriaan Knoppers

Volume: 28 - Issue: 0

Resumo. Abstract: Aim This study characterized the water quality in the lower São Francisco River (NE-Brazil).This research represents the first work to be carried out in the lower sector of the São Francisco river aiming to quantify and compare limnological variables, during three...

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Land use effects and stream metabolic rates: a review of ecosystem response - (2024)

Eduardo Francisco da Silva-Junior

Volume: 28 - Issue: 0

Resumo. Abstract Aim To conduct a review of the literature in order to identify the general stream metabolic responses to land use change. Methods I conducted a scientometric review analyzing the distribution of the studies among different environments, the land use scale used, and the general trends...

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Landscape effects on the occurrence of ichthyofauna in first-order streams of southeastern Brazil - (2024)

Gabriela Santos Tibúrcio, Carolina da Silva Carvalho, Fabio Cop Ferreira, Roberto Goitein, Milton Cezar Ribeiro

Volume: 28 - Issue: 0

Resumo. Abstract Objective In this study we aimed to understand how extrinsic environmental factors measured in the watercourses and the surrounding landscape influence the ichthyofauna of first-order streams. Methods Data were collected within the Corumbataí River Basin, São Paulo,...

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Leaf litter input and electrical conductivity may change density of Phylloicus sp. (Trichoptera: Calamoceratidae) in a Brazilian savannah stream - (2024)

Gustavo Figueiredo Marques Leite, Fabíola Turiel Costa Silva, Fernanda Keley Silva Pereira Navarro, Renan de Souza Rezende, José Francisco Gonçalves Júnior

Volume: 28 - Issue: 0

Resumo. Abstract Aim Shredders are generally not abundant in tropical streams, and there is considerable evidence suggesting that the food supply drives this pattern in headwaters. The aim of this study was to assess the effect of variation in the availability of food resources, over one year, on the...

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Limnology of an integrated cage-pond aquaculture farm - (2024)

Lúcia Helena Sipaúba-Tavares, Rodrigo Ney Millan, Ana Milstein

Volume: 28 - Issue: 0

Resumo. Abstract Aim Examining whether small-scale tilapia cages have a potential influence on water abiotic parameters in a pond of a flow-through system. Methods Tilapia cages were installed near the pond water outlet. Samples for determination of abiotic parameters were monthly collected during...

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Null models for study Rotifers and Crustaceans Zooplankton species richness in Chilean Patagonian lakes - (2024)

Patricio de los Ríos Escalante

Volume: 28 - Issue: 0

Resumo. Abstract Aims The Patagonian lakes are characterized by their oligotrophy that is the cause of low species number in their zooplankton assemblage. The aim of the present study is to analyze the crustacean and rotifers species number pattern in Patagonian lakes among a latitudinal gradient (40-51...

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Nutrient behavior in a highly-eutrophicated tropical estuarine system - (2024)

Nilva Brandini, Ana Paula de Castro Rodrigues, Ilene Matanó Abreu, Luiz Carlos Cotovicz Junior, Bastiaan Adriaan Knoppers, Wilson Machado

Volume: 28 - Issue: 0

Resumo. Abstract Aim: There are few studies dealing with the biogeochemical processes occurring in small estuaries receiving high sewage loading in tropical regions. The aim of this investigation was to characterize the biogeochemical behavior of nutrients in superficial waters collected at the...

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Periphyton biomass accrual rate changes over the colonization process in a shallow mesotrophic reservoir - (2024)

Mayara Ribeiro Casartelli, Gabriela de Jesus Lavagnolli, Carla Ferragut

Volume: 28 - Issue: 0

Resumo. Abstract Aim: We identified and analyzed the developmental phases (exponential and loss) of periphyton on artificial substrates based on biomass accrual rate in dry and rainy seasons in a shallow mesotrophic reservoir (Ninfeias Reservoir, Parque Estadual das Fontes do Ipiranga, São Paulo,...

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Propagule success of an invasive Poaceae depends on size of parental plants - (2024)

Fabielle Mucio Bando, Thaisa Sala Michelan, Sidinei Magela Thomaz

Volume: 28 - Issue: 0

Resumo. Abstract: Aim Viability and successful colonization of propagules by an invasive species may depend on several factors, such as parental plant size and propagules’ fresh mass. Here, we tested (i) the effects of propagules’ origin (from large and small parental plants); (ii) the...

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Reviewing carbon spiraling approach to understand organic matter movement and transformation in lotic ecosystems - (2024)

Leonardo Kleba Lisboa, Steven Thomas, Timothy Peter Moulton

Volume: 28 - Issue: 0

Resumo. Abstract: Aim Understanding riverine carbon cycling is a major issue for stream ecologists. Over the past 60 years, important advance in carbon dynamics and ecosystem energy flow have been made mainly through the Budget and Metabolism approaches. However, much less focus has been given to the...

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Scientometric trends of freshwater benthic invertebrates studies in Brazil - (2024)

Ana Lúcia Brandimarte, Ana Liz Uchida Melo

Volume: 28 - Issue: 0

Resumo. Abstract: Aim The aim of this paper is to analyze trends in the literature concerning benthic invertebrates in Brazil, mainly the number of published papers and approaches used. Methods The Ph.D. database of the Lattes Platform (CNPq) was used as the source of information for the period...

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Structural changes of the phytoplankton and epiphyton in an urban hypereutrophic reservoir - (2024)

Lucineide Maria Santana, Carla Ferragut

Volume: 28 - Issue: 0

Resumo. Abstract: Aim This study evaluated the temporal changes of phytoplankton and epiphyton structure and their relationships with limnological factors in an urban hypereutrophic reservoir (Rasgão Reservoir, Brazil). Methods We collected water sample and phytoplankton in different depths at...

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Trophic structure of macroinvertebrates in tropical pasture streams - (2024)

Bruna Neves da Silveira-Manzotti, Angelo Rodrigo Manzotti, Mônica Ceneviva-Bastos, Lilian Casatti

Volume: 28 - Issue: 0

Resumo. Abstract: Aim The aim of this study was to describe the diet of stream macroinvertebrates and to determine their trophic groups. Methods Invertebrates were sampled with D nets in three pasture streams. They were identified to genus level and submitted to gut content analysis, except for fluid...

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Where should I publish my next manuscript on Limnology? - (2024)

Juan Josè Neiff

Volume: 28 - Issue: 0

Resumo. Abstract When we need to spread the limnological knowledge, arises an issue that is not less than: where to publish our next article? In recent decades, the main element of evaluation are the “papers” and the sentence “publish or perish” haunts many scientists. It is...

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An update on the fish composition (Teleostei) of the coastal lagoons of the Restinga de Jurubatiba National Park and the Imboassica Lagoon, northern Rio de Janeiro State - (2024)

Fabio Di Dario, Ana Cristina Petry, Matheus Maia de Souza Pereira, Michael Maia Mincarone, Lorena Soares Agostinho, Ellen Martins Camara, Érica Pellegrini Caramaschi, Marcelo Ribeiro de Britto

Volume: 25 - Issue: 3

Resumo. AIM: We present an update on the composition of the fish species of the Restinga de Jurubatiba National Park and the Imboassica Lagoon, in the northern portion of Rio de Janeiro State, based on collecting efforts of almost two decades, historical museum records, and a review of the literature....

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Biodiversity effects of benthic ecosystem engineers on the spatial patterns of sediment CH4 concentration in an urban Neotropical coastal lagoon - (2024)

Adriano Caliman, Luciana Silva Carneiro, João José Fonseca Leal, Vinicius Fortes Farjalla, Reinaldo Luiz Bozelli, Francisco de Assis Esteves

Volume: 25 - Issue: 3

Resumo. AIM: Biodiversity of sediment bioturbators has been shown to be important for to the magnitude and stability of benthic-pelagic processes. However, no study to date has evaluated the importance of the biodiversity of benthic invertebrate bioturbators to the spatial patterns of sediment CH4...

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Dynamics of dissolved organic carbon from aerobic and anaerobic decomposition of Typha domingensis Pers. and Eleocharis interstincta (Vahl) Roem. & Schult. in a tropical coastal lagoon - (2024)

André Luiz dos Santos Fonseca, Claudio Cardoso Marinho, Francisco de Assis Esteves

Volume: 25 - Issue: 3

Resumo. AIM: The aim of this study was to evaluate the initial stage of decomposition of two aquatic macrophytes (Typha domingensis and Eleocharis interstincta) under aerobic and anaerobic conditions; METHODS: The samples of aquatic macrophytes and water were collected in Cabiúnas lagoon, Rio de...

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Effects of food web structure and resource subsidies on the patterns and mechanisms of temporal coherence in a tropical coastal lagoon: an experimental mesocosm approach - (2024)

Luciana Silva Carneiro, Adriano Caliman, Rafael Dettogni Guariento, Adriana de Melo Rocha, Leticia Barbosa Quesado, Ellen da Silva Fonte, Jayme Magalhães Santangelo, João José Fonseca Leal, Paloma Marinho Lopes, Frederico Meirelles-Pereira, Francisco de Assis Esteves, Reinaldo Luiz Bozelli

Volume: 25 - Issue: 3

Resumo. AIM: The study of the patterns and mechanisms of temporal coherence of ecological variables among lakes has become an important area of limnology. However, no study to date has experimentally tested whether and how resource subsidies and food web configuration affect the patterns and mechanisms...

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Effects of sandbar openings on the zooplankton community of coastal lagoons with different conservation status - (2024)

Rayanne Barros Setubal, Jayme Magalhães Santangelo, Adriana de Melo Rocha, Reinaldo Luiz Bozelli

Volume: 25 - Issue: 3

Resumo. AIM: Artificial sandbar openings are a common management practice in coastal lagoons but they can be a threat when negative effects to the quality of water and to the aquatic biota are observed. The current study compared sandbar opening effects in two coastal lagoons located close to each other,...

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Magnitude and variability of methane production and concentration in tropical coastal lagoons sediments - (2024)

Antonella Petruzzella, Claudio Cardoso Marinho, Lúcia Fernandes Sanches, Murilo Minello, Francisco de Assis Esteves

Volume: 25 - Issue: 3

Resumo. AIM: Coastal wetlands are potential zones for methane (CH4) production. The present study aims to evaluate the spatial variation of CH4 production and concentration in ten tropical coastal lagoons, the influence of aquatic macrophytes on the sediment CH4 concentration and how the magnitude of...

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Origin, concentration, availability and fate of dissolved organic carbon in coastal lagoons of the Rio de Janeiro State - (2024)

Albert Luiz Suhett, André Megali Amado, Frederico Meirelles-Pereira, Vinicius Scofield, Saulo Machado de Souza Jacques, Thaís Laque, Vinicius Fortes Farjalla

Volume: 25 - Issue: 3

Resumo. The coastal lagoons in the northern Rio de Janeiro State (Brazil) present a wide gradient of dissolved organic carbon (DOC) and water color, with the highest DOC concentrations reported in the literature for aquatic ecosystems. Thus, they represent a peculiar set of ecosystems for the study of...

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Regulation of bacterioplankton density and biomass in tropical shallow coastal lagoons - (2024)

Fabiana MacCord, Fernanda Dall Ara Azevedo, Francisco de Assis Esteves, Vinicius Fortes Farjalla

Volume: 25 - Issue: 3

Resumo. AIM: Estimating bacterioplankton density and biomass and their regulating factors is important in order to evaluate aquatic systems' carrying capacity, regarding bacterial growth and the stock of matter in the bacterial community, which can be consumed by higher trophic levels. We aim to...

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The role played by aquatic macrophytes regarding CO2 balance in a tropical coastal lagoon (Cabiúnas Lagoon, Macaé, RJ) - (2024)

Anderson da Rocha Gripp, Claudio Cardoso Marinho, Lúcia Fernandes Sanches, Antonella Petruzzella, Francisco de Assis Esteves

Volume: 25 - Issue: 3

Resumo. AIM: Carbon dioxide (CO2) is an important atmospheric trace gas that is involved in both the biological carbon cycle and global warming. Inland waters - mainly lakes - contribute to C cycling and have been considered a large source of atmospheric CO2. However, scientific studies usually neglect...

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The several faces of fear: ecological consequences of predation risk in a lagoon model system - (2024)

Rafael Dettogni Guariento, Francisco de Assis Esteves

Volume: 25 - Issue: 3

Resumo. AIM: The aim of this study was to evaluate the role of predation risk on the occurrence of trophic cascades in a benthic food chain, and detect if the ecological consequences of predation risk can reverberate in patterns observed across different hierarchical scales, such as prey size, prey...

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The use of aquatic environments for Scientific Education purposes: the case of the Imboassica Lagoon, Macaé, RJ - (2024)

Laísa Maria Freire dos Santos, Erica Steagall, Deia Maria Ferreira, Francisco de Assis Esteves, Reinaldo Luiz Bozelli

Volume: 25 - Issue: 3

Resumo. AIM: The present work aims to discuss the potential use of aquatic environments for teaching purposes, taking the Imboassica Lagoon and its environmental problems as an example. METHODS: A case study method including a literature review focused on Limnology and Science Education fields (SE). The...

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Zooplankton resting egg banks in permanent and temporary tropical aquatic systems - (2024)

Luciana Rabelo Araújo, Paloma Marinho Lopes, Jayme Magalhães Santangelo, Ana Cristina Petry, Reinaldo Luiz Bozelli

Volume: 25 - Issue: 3

Resumo. AIM: We evaluated zooplankton resting egg banks and active communities in five coastal lagoons and in five temporary pools, aiming to compare the active and the dormant communities in such environments. As they differ in hydroperiod, we expected that pools present richer resting egg banks in...

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Are sugarcane leaf-detritus well colonized by aquatic macroinvertebrates? - (2024)

Luciene Aparecida Leite-Rossi, Susana Trivinho-Strixino

Volume: 24 - Issue: 3

Resumo. AIM: The aim was to compare the kinetics of decomposition and the colonization of leaf litter of two plant species, the native Talauma ovata (pinha-do-brejo) and the exotic Saccharum officinarum (sugarcane), by aquatic macroinvertebrates; METHODS: From each substrate, three recipients of...

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Ecological attributes of the benthic community and indices of water quality in urban, rural and preserved environments - (2024)

Claudia Eiko Yoshida, Ana Paula Pozzo Rios Rolla

Volume: 24 - Issue: 3

Resumo. INTRODUCTION: Reference streams are pristine streams, untouched or unaltered by man, it being possible to use their environmental characteristics as quality threshold values. Besides the organic impacts measured via water quality biological monitoring programs, it has become necessary to evaluate...

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Efficiency of a constructed wetland for wastewaters treatment - (2024)

Fernanda Travaini-Lima, Lúcia Helena Sipaúba-Tavares

Volume: 24 - Issue: 3

Resumo. AIM: The limnological characteristics of three different inlets water of the constructed wetland were compared in terms of concentration data and loading rate data and evaluated the removal efficiencies of nutrients, solids, BOD5, chlorophyll-a and thermotolerant coliforms (TC) by the treatment...

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Future ecological studies of Brazilian headwater streams under global-changes - (2024)

Marcos Callisto, Adriano Sanches Melo, Darcilio Fernandes Baptista, José Francisco Gonçalves Junior, Manuel Augusto Simões Graça, Fernanda Gaudio Augusto

Volume: 24 - Issue: 3

Resumo. This paper results from discussions triggered during the "Stream Ecology Symposium" that took place at the XIII Congress of the Brazilian Society of Limnology in September of 2011 in Natal, Brazil. Based on our experiences, we have raised several questions regarding ecological studies...

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Microalgae community of the Huaytire wetland, an Andean high-altitude wetland in Peru - (2024)

Gian Salazar-Torres, Vera Lúcia de Moraes Huszar

Volume: 24 - Issue: 3

Resumo. AIM: The diversity and distribution of microalgae communities in a high-altitude (3,000 to 4,500 m a.s.l) Andean wetland, regionally known as bofedal, were examined to assess seasonal and spatial patterns. METHODS: Samples were taken monthly from June to December, 2008 at 13 stations in the...

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Periphytic algal biomass in two distinct regions of a tropical coastal lake - (2024)

Stéfano Zorzal de Almeida, Valéria de Oliveira Fernandes

Volume: 24 - Issue: 3

Resumo. AIM: This study assessed the phycoperiphyton biomass in two regions submitted to different human impacts on Juara Lake, a coastal ecosystem with multiple uses, to order to test the hypothesis that the sampling sites that receive domestic sewage shows higher biomass values. METHODS: It was...

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Physical, chemical and microbiological aspects during the dry and rainy seasons in a pond covered by macrophyte used in aquaculture water supply - (2024)

Samuel Generoso Dias, Lúcia Helena Sipaúba-Tavares

Volume: 24 - Issue: 3

Resumo. AIM: The water quality of a pond covered by macrophytes and used as a water supply for aquaculture was evaluated during the dry and rainy seasons; METHODS: Six points were established for water sampling, at water inflow and outflow. Samplings were carried out monthly between June 2008 and May...

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Population biology of shrimp Macrobrachium jelskii (Miers, 1778) (Decapoda, Palaemonoidea) at the Grande River at northwest of the state of Minas Gerais, Brazil - (2024)

Samara de Paiva Barros-Alves, Ariádine Cristine Almeida, Vivian Fransozo, Douglas Fernandes Rodrigues Alves, José Carlos da Silva, Valter José Cobo

Volume: 24 - Issue: 3

Resumo. AIM: The population biology of the freshwater shrimp Macrobrachium jelskii was investigated here emphasizing the length-frequency distribution, sex ratio, reproductive period and juvenile recruitment. In addition, the abundance of individuals was correlated with the abiotic factors. METHODS:...

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A global review on invasive traits of macrophytes and their link to invasion success - (2023)

Leticia Siman Bora, Andre Andrian Padial

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Biological invasions by exotic macrophytes represent one of the main reasons for biodiversity and ecosystem changes in aquatic ecosystems. The reasons for their ability to succeed in new environments have been of ecological interest in the last years. We made a global review,...

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A multibiomarker approach to investigate paracetamol effects in the reproduction regulatory axis of a male Neotropical catfish Rhamdia quelen - (2023)

Maiara Carolina Perussolo, Maiara Vicentini, Leonardo Skarbek Lyra, Lucicleide Ângelo Silva, Mayara dos Santos Rodrigues, Leticia da Silva Pereira Fernandes, Luis Fernando Fávaro, Helena Cristina Silva de Assis

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Paracetamol (PCM), or acetaminophen, is one of the most used drugs for human treatment of pain and fever. Since it has often been found in the aquatic environment, the aim of this study was to investigate the effects of PCM on the reproductive axis of male Rhamdia quelen catfish....

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Advocating for free-to-read and free-to-publish science journals amid a need to change a broken evaluation system - (2023)

André Frainer

Volume: 35 - Issue: 0

Resumo. Abstract Publishing is an important step for the work of any scientist. Unfortunately, academia has been using publication metrics, particularly the journal impact factor, as one of the main criteria for assessing researchers CVs when hiring and promoting researchers and evaluating grant...

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Agriculture affects functional diversity of aquatic insects in Subtropical Atlantic Forest streams - (2023)

Luiz Ubiratan Hepp, Silvia Vendruscolo Milesi, Rayana Caroline Picolotto, Vanderlei Secretti Decian, Rozane Maria Restello, Julio Serrano Huiñocana, Edélti Faria Albertoni

Volume: 35 - Issue: 0

Resumo. Abstract: Aim We evaluated the effects of native vegetation and agricultural activities on functional characteristics of aquatic insects’ assemblages in Atlantic Forest streams southern Brazil. Methods We collected information on land uses, riparian zone structural characteristics, and...

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Beta diversity of Ephemeroptera, Plecoptera and Trichoptera on multiples spatial extents in Xingu River rapids - (2023)

Nayara Monteiro Barreiros, Tommaso Giarrizzo, Bruno Spacek Godoy

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Additive diversity partitioning has been used to explain the accumulation of diversity at different spatial scales with relative success. In lotic ecosystems, the spatial extent is extremely relevant in studies of diversity accumulation, because it encompasses environmental...

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Between the past and the present: following the steps of 19th century naturalists and their contribution to the knowledge of Brazilian ichthyofauna - (2023)

Mariana Bispo de Oliveira, Rodrigo Assis de Carvalho, Francisco Leonardo Tejerina-Garro

Volume: 35 - Issue: 0

Resumo. Abstract Aim To evaluate the contribution of naturalists Francis de Castelnau, Jacob Heckel, Johan Baptist von Spix, Johann Natterer, Louis Agassiz, and Rudolf Kner to the knowledge of taxonomic diversity of freshwater ichthyofauna in Brazil between the years 1829 and 1859. Methods Two data...

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Community assessment of benthic macroinvertebrates in fishponds in the presence and absence of fish - (2023)

Mariana Silveira Guerra Moura e Silva, Alfredo José Barreto Luiz, Marcos Eliseu Losekann, Hamilton Hisano

Volume: 35 - Issue: 0

Resumo. Abstract Aim In the present study, the structure of the benthic invertebrates in ponds in the presence and absence of Nile tilapia was evaluated. Methods The benthic macroinvertebrates and physicochemical parameters were analyzed for a period of eight weeks, every 15 days, in two ponds (one...

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Composition and structure of the benthic diatom community from salt marshes of southern Brazil and their relationship to environmental variables - (2023)

Dávia Marciana Talgatti, Cesar Serra Bonifácio Costa, Luís Gustavo de Castro Canani, Haywood Dail Laughinghouse IV, Lezilda Carvalho Torgan

Volume: 35 - Issue: 0

Resumo. Abstract: Aim This study focused on the spatiotemporal variation of the benthic diatom community structure in salt marshes from the Patos Lagoon estuary and their relationship with environmental variables. Methods Samplings were carried out in the winter of 2010 and summer of 2011 (during El...

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Effect of water quality on macrobenthic fauna in Achenkovil River, Southern-Western Ghats, Kerala, India - (2023)

Sujitha Sukumaran, Sreejai Raghavan, Beena Sarada Kurup

Volume: 35 - Issue: 0

Resumo. Abstract Aim The present study investigated the influence of environmental variables on macrobenthic fauna in the Achenkovil River, Southern Western Ghats, Kerala. The knowledge of aquatic ecosystems in many remote areas is very scanty and no one has yet made an attempt to study the macrobenthic...

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Factors associated with macrophyte beta diversity in Caxiuanã Bay, located in the Eastern Amazon - (2023)

Elaine Suzi Nascimento Vieira, Francieli de Fátima Bomfim, Joás Silva Brito, Nayara Louback Franco, Flávia Alessandra da Silva Nonato, Thaisa Sala Michelan

Volume: 35 - Issue: 0

Resumo. Abstract Aim In this study, we investigated the beta diversity of macrophytes (total, turnover, and nestedness) in Caxiuanã Bay, localized in the Eastern Amazon. We also investigated the environmental factors determining the beta diversity and its components. Methods Macrophytes and...

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First record of the exotic species platyfish Xiphophorus maculatus (Günther, 1866) in an urban floodplain of a Brazilian neotropical river - (2023)

Marta Severino Stefani, Fábio Leandro da Silva, Welber Senteio Smith

Volume: 35 - Issue: 0

Resumo. Abstract: Aim This work reports the first occurrence of the exotic species Xiphophorus maculatus (Günther, 1866) in the Sorocaba River Basin. The introduction of non-native fish species has become common and many species have been introduced mainly through sport fishing, aquaculture and...

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Fish assemblage and current status of the upper São Francisco River basin floodplain - (2023)

Marina Ferreira Moreira, Alexandre Peressin, João de Magalhães Lopes, Paulo Santos Pompeu

Volume: 35 - Issue: 0

Resumo. Abstract: Aim This study aimed to evaluate whether the upper São Francisco River basin floodplain is still used as a nursery by migratory fish and present the current status of the area’s ichthyofauna after almost 40 years since the only survey was conducted in the region. Methods...

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From the pond to the creek many years ago: life-history dynamics of feral poeciliids in Brazil - (2023)

André Lincoln Barroso Magalhães, Eneida Maria Eskinazi-Sant’Anna, Mário Luís Orsi, Dilermando Pereira Lima Junior, Jean Ricardo Simões Vitule, Fernando Mayer Pelicice

Volume: 35 - Issue: 0

Resumo. Abstract Aim We investigated trophic and reproductive traits of feral guppy Poecilia reticulata and southern platyfish Xiphophorus maculatus in a headwater creek located in the Paraíba do Sul River basin, southeastern Brazil. Methods Fish were collected bimonthly from January to December...

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From virus to igapó forest: a systematic review of 35 years monitoring of an Amazonian Lake impacted by bauxite tailings (Batata Lake) - (2023)

Simone Jaqueline Cardoso, Reinaldo Luiz Bozelli, Fabio Roland, Francisco de Assis Esteves, Marcos Paulo Figueiredo Barros, Érica Pellegrini Caramaschi, João José Fonseca Leal, Nathália da Silva Resende, Enoque Gonçalves Ribeiro, Fabio Rubio Scarano, Vera Lúcia de Moraes Huszar

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Long-term ecological research often integrates many research groups and subjects in one or few sites sampled systematically along the time. In the Amazon, there is a tradition of long-term research in terrestrial habitats, but this has been less common in floodplain lakes. This...

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Impacts of extreme precipitation events in water quality: a scientometric analysis in global scale - (2023)

Caio Vitor Matos Moreira, Mariana Rodrigues Amaral da Costa, Vanessa Becker

Volume: 35 - Issue: 0

Resumo. Abstract: Aim This study aims to evaluate temporal patterns of extreme events related to precipitation on a global scale, identifying their main impacts and if there are climatic zones more susceptible to these phenomena using a scientometric approach. Methods A systematic review was conducted...

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Incorporating symmetrical and asymmetrical dispersal into Ecological Niche Models in freshwater environments - (2023)

Micael Rosa Parreira, Geiziane Tessarolo, João Carlos Nabout

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Ecological niche models (ENMs) are based mainly on environmental (mostly climatic) and occurrence data to predict the potential distribution of species. In freshwater habitats, species dispersal is not restricted only by physical barriers but also by the directional movement of the...

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Integrated tools to evaluate environmental conditions in estuarine streams of Northeastern Brazil - (2023)

Robert Germano Alves da Silva, María Angélica Pérez-Mayorga, Renato de Mei Romero

Volume: 35 - Issue: 0

Resumo. Abstract: Aim This work proposes the application and development of environmental quality indexes for the evaluation of tropical estuarine streams in different spatial scales. The main goal was to understand the biological responses of the ichthyofauna in relation to different spatial indices in...

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Intensive fish farming: changes in water quality and relationship with zooplankton community - (2023)

Tamiris Rosso Storck, Leticia Raquel Sippert, Débora Seben, Dinei Vitor Lazarotto, Júlia Helfenstein, Jheniffer dos Santos da Luz, Felipe Osmari Cerezer, Silvana Isabel Schneider, Arci Dirceu Wastowski, Barbara Clasen, Jaqueline Ineu Golombieski

Volume: 35 - Issue: 0

Resumo. Abstract Aim This study aimed to evaluate the interference of intensive fish farming in the physicochemical variables of water and in the zooplankton community from a tilapia (Oreochromis niloticus Linnaeus, 1758) pond in southern Brazil. In addition, it was verified whether the analyzed...

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Isotopic signature of the caridean shrimp Potimirim brasiliana Villalobos, 1960 in different points of a pristine area in southeastern Brazil - (2023)

Jeniffer Natalia Teles, Nielson Felix Caetano França, João Alberto Farinelli Pantaleão, Rafael Carvalho Santos, Luis Miguel Pardo, Fernando Luis Mantelatto

Volume: 35 - Issue: 0

Resumo. Abstract Aim The aim of this study was to investigate the isotopic signature of P. brasiliana captured in three different points along the river flow toward the sea of the Prumirim River, northern coast of the state of São Paulo/Brazil in order to test the hypothesis of similarity...

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Length-dry mass regressions for Leptonema (Trichoptera, Hydropsychidae) larvae in a Neotropical headwater stream - (2023)

Amanda de Melo Coelho, Pedro Henrique Monteiro do Amaral, Marden Seabra Linares, Marcos Callisto

Volume: 35 - Issue: 0

Resumo. Abstract: Aim The objectives of this study were to evaluate which allometric measurements of Leptonema larvae are most suitable in order to develop mathematical equations to describe biomass relationships for the population of this taxon in a reference condition headwater stream. Methods We...

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Length-weight relationship of fishes from an estuary of Abrolhos Bank, Brazil - (2023)

Matheus Oliveira Freitas, Fernando Conceição Fontes, Jonison Vieira Pinheiro, Vinicius José Giglio

Volume: 35 - Issue: 0

Resumo. Abstract: Aim We investigate the length-weight relationship estimates of seventeen species caught using an artisanal purse seine in the Abrolhos Bank, a tropical estuarine complex in eastern Brazil. Methods From February 2012 to November 2013, fish were collected monthly using an artisanal...

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Local and regional determinants of phytoplankton communities in water reservoirs from the Cerrado biome - (2023)

Leonardo Beserra da Silva, Carla Albuquerque de Souza, Ludgero Cardoso Galli Vieira, Erina Vitório Rodrigues Antonio, Antonio Felipe Couto Junior

Volume: 35 - Issue: 0

Resumo. Abstract Aim Based on a study comprising water reservoirs within the Brazilian Cerrado biome, we seek to answer the following question: how does phytoplankton communities respond to environmental, landscape, and spatial predictors? We expected local predictors to be the main factors...

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Margin distance as a driving factor of macrophyte assembly in a tropical reservoir - (2023)

Thieres Santos Almeida, Guilherme Ramos Demetrio, Juliano Ricardo Fabricante

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Evaluate the structure of the aquatic macrophytes assembly of the Jacarecica II Dam, Areia Branca, Sergipe, and verify if distance from the margin is a driver for species richness, and composition in this environment. Methods We settled transects where we plotted quadrats and...

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Occurrence and ecological risk assessment of pharmaceutically active compounds in neotropical small basins, Brazil - (2023)

Alessandro Minillo, William Deodato Isique, Claudia Andrea Lima Cardoso, Yzel Rondon Súarez

Volume: 35 - Issue: 0

Resumo. Abstract: Aim The aim of our study was to evaluate the contamination levels of selected pharmaceutically active compounds (PAC) and their potential ecological threat to forested streams. Methods Samples of stream water were collected in the second largest city in Mato Grosso do Sul State in...

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Ornamental aquaculture as a pathway for the introduction of non-native fish in coastal drainage of northeastern Brazil - (2023)

Jefferson Saulo da Vitória Luduvice, Marcelo Fulgêncio Guedes Brito

Volume: 35 - Issue: 0

Resumo. Abstract: Aim We present the first record of the introduction of three non-native ornamental fish species, resulting from ornamental aquaculture escapes on the Northeast Mata Atlântica hydrographic ecoregion, with information on the reproductive activity. Methods The specimens were...

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Potential of the retention capability of a Neotropical reservoir (São Paulo State, Brazil) - (2023)

Flavia Bottino, Simone Pereira Casali, Marcela Bianchessi Cunha-Santino, Maria do Carmo Calijuri, Irineu Bianchini Júnior

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Man-made reservoirs lead to several changes in their downstream rivers that depend on the hydraulic characteristics of the reservoirs. However, their multiple uses can also provide facilities that influence the ecosystem services that they provide. This study addressed the...

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Reproduction of the invasive largemouth bass Micropterus salmoides (Lacepède, 1802) in a Neotropical reservoir with suggestions to management and control - (2023)

Matheus Oliveira Freitas, Vanessa Maria Ribeiro, Vinícius Abilhoa, Jean Ricardo Simões Vitule

Volume: 35 - Issue: 0

Resumo. Abstract Aim The largemouth bass Micropterus salmoides was introduced in more than 50 countries for the purpose of sport fishing. In Brazil, records date from 1922, and nowadays many populations are known to occur in the southern region. Here we investigated the reproductive biology of this...

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Reproductive aspects of an isolated population of Psalidodon aff. fasciatus (Teleostei: Characidae) from southern Brazil - (2023)

Franciele Fernanda Kerniske, Luz Elena De la Ossa-Guerra, Roger Henrique Dalcin, Igor de Paiva Affonso, Roberto Ferreira Artoni, Vinícius Abilhoa

Volume: 35 - Issue: 0

Resumo. Abstract: Aim To investigate reproductive characteristics in a small population of Psalidodon aff. fasciatus living in isolation in an environment with a unique geological configuration, a doline-shaped depression (known as Furna 2), with a mean diameter of 80 m and water depth of 50 m, a...

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Reviewing the organic matter processing by wetlands - (2023)

Marcela Bianchessi da Cunha-Santino, Irineu Bianchini Júnior

Volume: 35 - Issue: 0

Resumo. Abstract Aim Cycling processes in wetlands are highly dynamic and involve complex interactions between hydrological processes, biogeochemical transformations, and microbial communities. This review attempts to assess the interactions between elements within biogeochemical cycles and the possible...

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Role of zooplanktonic functional groups in a shallow mesotrophic reservoir - (2023)

Maria Carolina de Almeida Castilho, Thiago Rodrigues dos Santos, Carla Ferragut, Raoul Henry

Volume: 35 - Issue: 0

Resumo. Abstract: Aim Zooplankton functional groups play an important role in lake functioning and can readily respond to environmental changes and may be associated with phytoplankton changes. In warmer regions, zooplankton species have a smaller body size, which decreases their grazing capacity,...

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Seasonal precipitation and anthropogenic pressure affect the water quality of reservoirs in the highland humid forest enclaves - (2023)

Luciana Gomes Barbosa, Kalline de Almeida Alves Carneiro, Letícia Moro, João Paulo de Oliveira Santos, Rodrigo Santana Macedo

Volume: 35 - Issue: 0

Resumo. Abstract Aim Humid forest enclaves are areas with privileged rainfall patterns compared to the surrounding regions, which favours their use for human settlement and agricultural activities, actions that promote severe transformations of the landscape and can contribute to the degradation of...

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Sedimentary sterol levels to track river contamination by sewage in one of the largest Amazonian cities (Belém - Pará), northern Brazil - (2023)

Jorge Hernando Agudelo Morales, Camila Carneiro dos Santos Rodrigues, Mariana da Silva Messias, Flaviana Cardoso Damasceno, Angela Esmeralda Cely Torres, José Augusto Martins Corrêa

Volume: 35 - Issue: 0

Resumo. Abstract: Aim The Aurá River, located in the second-largest Brazilian Amazon city, has been experiencing the effects of human activities from riverine communities and the Aurá landfill for many years. In this study, we assess the occurrence, sources, and distribution of selected...

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The effects of river impoundment on artisanal fishers in the Middle Tocantins River, Brazil - (2023)

Marco Aurélio Alves Santos, Fernando Mayer Pelicice

Volume: 35 - Issue: 0

Resumo. Abstract: Aim The present study investigated the social impacts caused by the construction of a large hydropower dam (Lajeado Dam) on artisanal fishers in the Middle Tocantins River, evaluating how the impoundment affected fishing techniques (locations, transport and gears), operation (income,...

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Biological aspects of Hypostomus affinis (Siluriformes: Loricariidae) in Brazilian coastal rivers - (2022)

Tiago Magalhães da Silva Freitas, Gilberto Nepomuceno Salvador

Volume: 34 - Issue: 0

Resumo. Abstract Aim Determine the length-weight relationship (LWR), the period of reproduction, and evaluate the variation of the condition factor (K) of Hypostomus affinis from two coastal drainages in southeastern Brazil, assessing the influence of the rainfall on these biological aspects. Methods...

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Can people detect the loss of water quality? A field experiment to evaluate the correlation between visual perception and water eutrophication degree - (2022)

João Carlos Nabout, Ana Clara Maciel David, Jéssica Fagundes Felipe, Karine Borges Machado, Laurence Carvalho, Hélida Ferreira da Cunha

Volume: 34 - Issue: 0

Resumo. Abstract Aim The quantity and quality of water are essential to many ecosystem services, biodiversity and human well-being. In the present paper, we used a field experiment to evaluate the visual perception of the public regarding the loss of water quality associated with eutrophication and...

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Characterization of wild fish diet and trophic guild in a protected area - (2022)

Julia Kaori Kuriyama Ramos, Natália Luiza da Silva, Vinicius Cesar do Bonfim, Bianca Yunes Fornari, Bruna Caroline Kotz Kliemann, Cibele Diogo Pagliarini, Heleno Brandão, Igor Paiva Ramos

Volume: 34 - Issue: 0

Resumo. Abstract: Aim We characterize the diet and trophic guild to the fish community in a protected area to contribute information about the trophic ecology. Methods The collection was carried out at three sampling points, in 2017 and 2018, with the help of gill nets. The collected specimens were...

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Density effect of Polygonum ferrugineum Wedd. (Polygonaceae) and nutrients concentration of sediment on establishment of Alternanthera philoxeroides (Mart.) Griseb. (Amaranthaceae) - (2022)

Abner José de Souza Vicente, Leticia Figueiredo Candido, Márcio José Silveira, Karina Fidanza

Volume: 34 - Issue: 0

Resumo. Abstract Aim The effects of neighbor’s species density and nutrient availability in the sediment are essential to understand the structuring rules of emergent macrophyte communities. The objective of this paper was to investigate how the density of Polygonum ferrugineum and the...

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Drivers of zooplankton spatial dynamics in a small neotropical river - (2022)

Pablo Henrique dos Santos Picapedra, Cleomar Fernandes, Gilmar Baumgartner, Paulo Vanderlei Sanches

Volume: 34 - Issue: 0

Resumo. Abstract Aim Our objective was to describe the structure and spatial patterns of the zooplankton community in a small Brazilian river system (Paranaíba River sub-basin) and evaluate the role of an oxbow lake in the dynamics of this community. Methods Zooplankton samples were collected...

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Eutrophication changes community composition and drives nestedness of benthic diatoms from coastal streams - (2022)

Ana Paula Tavares Costa, Emanuela Castro, Cássia Fernanda Martins da Silva, Fabiana Schneck

Volume: 34 - Issue: 0

Resumo. Abstract: Aim We evaluated changes in periphyton biomass and the composition of benthic diatom communities along a gradient of urbanization in 10 coastal streams located on the coastal plain of southernmost Brazil. Methods At each coastal stream, we obtained limnological variables and...

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Exploring the impacts of non-native leaf litter on invertebrate community and leaf decomposition in a Atlantic Forest stream - (2022)

Jéssica Andriotti, Mauricio Mello Petrucio, Aurea Luiza Lemes da Silva

Volume: 34 - Issue: 0

Resumo. Abstract: Aim In this study, we examined the effects of non-native leaf litter on the functioning of an Atlantic Forest stream ecosystem. Methods Were tested two predictions: (i) Leaf litter from the native trees with high nutritional quality will have higher decomposer’s activity and...

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Feeding ecology of Eigenmannia desantanai (Gymnotiformes: Sternopygidae) in southern Pantanal, Brazil - (2022)

Élida Jeronimo Gouveia, Patrícia Luna Rondon, Yzel Rondon Súarez

Volume: 34 - Issue: 0

Resumo. Abstract Aim This study investigated changes in the dietary composition and trophic niche breadth of Eigenmannia desantanai in the context of hydrological periods, rivers, and ontogeny. Methods Collections were performed monthly on the Paraguay and Amonguijá Rivers between February 2009...

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Here comes the large catfish “jaú” Zungaro jahu (Ihering 1898) (Teleostei, Pimelodidae): a new alarming case of fish introduction in a high-endemism Neotropical ecoregion - (2022)

Augusto Frota, Vinícius Abilhoa, Matheus Oiveira Freitas, Rodrigo Lira Meyer, Eduardo Rios Gonçalves, Filipe Manoel Azevedo, Éder André Gubiani, Weferson Júnio da Graça

Volume: 34 - Issue: 0

Resumo. Abstract: Aim Non-native fish species have been closely related to serious damage to aquatic biodiversity due to their negative effects on native fauna. We aim to report the first and alarming occurrence of the non-native catfish “jaú” Zungaro jahu in the Iguaçu River...

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Influence of nutrient levels, travel time and light availability on phytoplankton chlorophyll-a concentrations in a neotropical river basin - (2022)

Kennedy Francis Roche, Maria Gabriela Alves Ferreira, Débora Fernandes Calheiros

Volume: 34 - Issue: 0

Resumo. Abstract: Aim Knowledge of the factors influencing the biomass of phytoplankton in rivers is important with reference to the characterization of water quality and predicting the effects of environmental change on such ecosystems. The present study quantified the concentrations of chlorophyll-a...

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Leaf breakdown in a tropical stream: comparison between the exotic Eucalyptus grandis and two native species - (2022)

Gisele Pires Pelizari, Ariane Almeida Vaz, Davi Butturi-Gomes, Welber Senteio Smith

Volume: 34 - Issue: 0

Resumo. Abstract Aim We evaluated the leaf decomposition in a first order stream of the exotic Eucalyptus grandis and two native species Lithraea molleoides and Maytenus aquifolium common riparian trees in a tropical forest. Besides seasonal effects on leaf decomposition of the three species were...

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Length-weight relationships of native and non-native fishes in a subtropical coastal river of the Atlantic Rain Forest - (2022)

Barbara Maichak de Carvalho, Larissa Faria, Natali Oliva Roman Miiller, Henry Louis Spach, Jean Ricardo Simões Vitule

Volume: 34 - Issue: 0

Resumo. Abstract Aim The objective was to describe the LWR of fish species of the Guaraguaçu River, as well as to compare the LWR parameters of the non-native species with the parameters obtained in their native ranges, available in the literature. Methods In this study, the LWR of 10 fish...

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Natural and anthropic inputs of nutrients in hydrographic basins of reservoirs in the Brazilian semiarid - (2022)

Herbster Ranielle Lira De-Carvalho, Gustavo Gonzaga Henry-Silva

Volume: 34 - Issue: 0

Resumo. Abstract: Aim Estimate the input of loads of N and P emitted by natural (atmospheric deposition and soil denudation) and anthropogenic (agriculture, livestock and sewage) factors for the hydrographic basins of two reservoirs in the Brazilian semiarid region (Mendubim and Umari). Methods In the...

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On the significance of wetlands: three decades of aquatic macroinvertebrate monitoring programs in a Neotropical floodplain - (2022)

Ana Paula dos Santos Bertoncin, Rafael Prandini Tramonte, Gisele Daiane Pinha, Camila Gentilin-Avanci, Marcelo Volta Cortes de Oliveira, Roger Paulo Mormul

Volume: 34 - Issue: 0

Resumo. Abstract Aim Wetland areas have high environmental complexity and support high biodiversity. Therefore, global efforts are required to preserve these areas. Here, we show the results of three decades of monitoring programs regarding macroinvertebrate species from the upper Paraná River...

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Reproductive aspects of prawn Desmocaris trispinosa (Aurivillius, 1898) from a periurban stream of Abidjan (Banco stream, Côte d'Ivoire) - (2022)

Wayrawélé Yasmen Koné, Mexmin Koffi Konan, Nakouma Konaté

Volume: 34 - Issue: 0

Resumo. Abstract Aim Characterize habitats and determine the reproductive parameters of the prawn Desmocaris trispinosa (Aurivillius, 1898) from Banco stream, a periurban stream of Abidjan (Côte d'Ivoire, West Africa). Methods Sampling was conducted monthly, from July 2020 to June 2021 at...

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Screening of cyanotoxin producing genes in Ecuadorian freshwater systems - (2022)

Isabel Ballesteros, Sara de la Cruz, Michelle Rojas, Génesis Salazar, Miguel Martínez-Fresneda, Pablo Castillejo

Volume: 34 - Issue: 0

Resumo. Abstract: Aim This study pursued the detection of cyr and mcy genes to assess the presence of cylindrospemopsin (CN) and microcystin (MC) potential producers in Ecuadorian water bodies. Methods Environmental DNA (eDNA) was extracted from eight water bodies and one wastewater treatment plant...

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Seasonal patterns may influence the diet of the lambari Serrapinnus notomelas (Eigenmann 1915) - (2022)

Nathália Cardamoni Santiago, Victoria Silva Wiezel Santos, Thiago Deruza Garcia, Ana Paula Vidotto-Magnoni, Fernando Camargo Jerep

Volume: 34 - Issue: 0

Resumo. Abstract: Aim This study investigated whether seasonal variations have an effect on diet composition of Serrapinnus notomelas in a marginal lagoon located under the area of influence of the Tibagi River, Upper Paraná Basin. Methods Samples were carried out monthly between February 2017...

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Taxonomic and morphofunctional phytoplankton response to environmental variability in rivers from different hydrographic basins in Southern Brazil - (2022)

Thaís Tagliati da Silva, Gabriela Medeiros, Mailor Wellinton Wedig Amaral, Maria Clara Pilatti, Jascieli Carla Bortolini, Norma Catarina Bueno

Volume: 34 - Issue: 0

Resumo. Abstract Aim Urbanization, agriculture, and deforestation are the main anthropogenic factors that modify the soil, altering the quality of water, and influencing limnological aspects and the aquatic biota in rivers. We investigated the morphology-based taxonomic and functional response (MBFG)...

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The combined use of paleolimnological and long-term limnological information to identify natural and anthropogenic environmental changes - (2022)

Felipe García-Rodríguez, Ana Paula Tavares Costa, Alien Mavi Frantz, Cassia F. Martins da Silva, Karoline Pereira Martins, Andrea L. M. Moraes, Felipe Lopes Alves, Leandro Bugoni, Cleber Palma-Silva, Edélti Faria Albertoni, Paulo Henrique Mattos, Grasiela Lopes Leães Pinho, Vanessa Ochi Agostini

Volume: 34 - Issue: 0

Resumo. Abstract Aim Urbanization leads to rapid changes in ecosystem structure and function. Wetlands on university campuses under urbanization pressure could be used as case studies of multidisciplinary aquatic research and good environmental practices promoting sustainability. Methods A...

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The effects of season and ontogeny in the diet of Piabarchus stramineus (Eigenmann 1908) (Characidae: Stevardiinae) from southern Brazil - (2022)

Vinicius Renner Lampert, Tatiana Schmidt Dias, Karina Keyla Tondato-Carvalho, Clarice Bernhardt Fialho

Volume: 34 - Issue: 0

Resumo. Abstract Aim In the present work we describe and analyze the diet of a small characin species, Piabarchus stramineus, from the Ibicuí River, Uruguay River Basin, southern Brazil. Methods Samples were collected monthly from April 2001 to March 2002 with seine net. All fish were measured,...

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The phytoplankton community as a descriptor of environmental variability: a case study in five reservoirs of the Paraná River basin - (2022)

Matheus Vieira da Silva, Jascieli Carla Bortolini, Susicley Jati

Volume: 34 - Issue: 0

Resumo. Abstract Aim We aimed to characterize the structure of the phytoplankton community and identify the main environmental factors driving the community in five reservoirs constructed in the region of the high Paraná River. Methods The phytoplankton and environmental variables were...

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The relationship between zooplankton occupancy and abundance in a floodplain is mediated by the hydrological regime - (2022)

Kamylla Nayara Jesus dos Santos, Priscilla de Carvalho, Ludgero Cardoso Galli Vieira, Rafaela Vendrametto Granzotti, Luis Mauricio Bini

Volume: 34 - Issue: 0

Resumo. Abstract: Aim Positive relationships between occupancy and abundance are often found for different groups of organisms and ecosystem types. However, to our knowledge, no study has sought to assess this relationship considering a context in which a particular mechanism is the most likely...

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Trophic assessment of four tropical reservoirs using phytoplankton genera - (2022)

Carlos A. Rivera, Angela Zapata, William Villamil, Nubia León-López

Volume: 34 - Issue: 0

Resumo. Abstract: Aim Monitoring the trophic state of reservoirs requires indices that provide a quick report of the ecosystem to decision makers. This study aimed to develop a system of trophic status indicators for tropical mountain reservoirs using phytoplankton genera. Methods Between 2004 and...

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Water quality and planktonic community of Owalla Reservoir, Osun State, Southwest Nigeria - (2022)

Helen Yetunde Omoboye, Adedeji Idowu Aduwo, Henry Adewole, Israel Funso Adeniyi

Volume: 34 - Issue: 0

Resumo. Abstract Aim Owalla Reservoir, one of the largest and oldest man-made lakes in Osun State supplies potable water to many towns in the state including the state capital, Osogbo. Active fishing activities also takes place in the lake. Inspite of the importance of the reservoir, information on the...

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A stream multimetric fish index in a large-sized city in south-eastern Brazil - (2021)

Guilherme Raphael Camargo Arcanjo Silva, Maurício Cetra

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Our study was carried out to develop a multimetric index suitable for urban wadeable streams in Sorocaba, a large-sized city from the Atlantic rainforest in south-eastern Brazil. Methods Twenty-seven stream stretches were selected for environmental and fish evaluation. Twenty...

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Bait efficiency to monitor mandi (Pimelodus maculatus) in the tailrace of hydropower dams, Southeast Brazil - (2021)

Alexandre Peressin, Rafael Couto Rosa Souza, Alexandre Lima Godinho

Volume: 33 - Issue: 0

Resumo. Abstract: Aim This study compared the efficiency of two baits (earthworm and cow heart) for monitoring the abundance of mandi catfish (Pimelodus maculatus) in the tailrace of hydropower dams, one of the commonly killed fish in turbine procedures. Methods Sampling occurred every two months from...

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Do changes in the water regime determine the abundance of the copepod trophic group in a Neotropical floodplain? - (2021)

Lenin Medeiros de Almeida Lino, Tatiane Mantovano, Vanessa G. Tibúrcio, Fábio Amodêo Lansac-Tôha

Volume: 33 - Issue: 0

Resumo. Abstract Aim Our study evaluated the effects of extreme weather events and environmental conditions on the trophic groups of copepods (herbivores and omnivores) in the upper Paraná River floodplain. Methods The zooplankton were collected and Copepods and Rotifers were analyzed in nine...

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Do wider riparian zones alter benthic macroinvertebrate assemblages’ diversity and taxonomic composition in neotropical headwater streams? - (2021)

Marden S. Linares, Livia B. dos Santos, Marcos Callisto, Jean C. Santos

Volume: 33 - Issue: 0

Resumo. Abstract: Aim The maintenance and condition of riparian vegetation are important factors for conserving headwater streams and their species diversity. Thus, variations in the width of a riparian zone can have dramatic effects in the structure and functioning of the adjacent freshwater ecosystem....

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Effects of formaldehyde preservation time on the length-weight relationship of the ubiquitous neotropical cladoceran Ceriodaphnia silvestrii - (2021)

Rafael Lacerda Macêdo, Lorena Pinheiro-Silva, Adriana Lamanna Puga, Gabriel Klippel, Betina Kozlowsky-Suzuki, Odete Rocha, Christina Wyss Castelo Branco

Volume: 33 - Issue: 0

Resumo. Abstract: Aim In this study, the effect of preservation time on total body length and dry weight of adult specimens of the neotropical cladoceran Ceriodaphnia silvestrii preserved with 4% formalin solution were examined. Methods The relationship between these variables was examined under...

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Evaluating the periphyton as a bioreactor for removal of nutrients in a shallow hypereutrophic reservoir - (2021)

Suele Aparecida Mendes-Santos, Carla Ferragut

Volume: 33 - Issue: 0

Resumo. Abstract: Aim We evaluated the periphyton on artificial substrate in the treated sewage effluent, effluent patch, inside and after the macrophyte stand in a shallow hypereutrophic reservoir. Specifically, we investigated the relationship between N and P contents and algal biomass in the...

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Fish-food interaction network around cage fish farming in a neotropical reservoir - (2021)

Heleno Brandão, Denise Lange, Daniel Rodrigues Blanco, Igor Paiva Ramos, Jamile Queiroz de Sousa, André Batista Nobile, Edmir Daniel Carvalho

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Investigating whether wild fish accept residual ration from cage fish farming to the point of changing their diet and the fish-food interaction network. Methods The diet of fish species, Astyanax lacustris, Iheringichthys labrosus, Leporinus amblyrhynchus, Schizodon nasutus and...

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Generalist populations formed by generalist individuals: a case of study on the feeding habits of a Neotropical stream fish - (2021)

Rafaela Carvalho Neves, Pedro Paulino Borges, Jaquelini de Oliveira Zeni, Lilian Casatti, Fabrício Barreto Teresa

Volume: 33 - Issue: 0

Resumo. Abstract: Aim We described the diet of the generalist stream fish Knodus chapadae and we tested if the environmental conditions are associated with population’s diet and individual specialization. Methods We analyzed the stomach contents of 287 individuals from 29 streams from the...

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Growth dynamic on a co-cultivation of two Chlorophyta microalgae exposed to copper - (2021)

Rafael Barty Dextro

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Copper is an essential nutrient for the phytoplankton, but it can also act as a toxic agent, depending on its concentration. Considering the continuous increase of this metal in the natural aquatic ecosystems, understanding its actions in co-cultivation scenarios is of great...

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Index of Biotic Integrity based on fish assemblages for pampean streams and its implementation along the Del Azul stream (Buenos Aires province, Argentina) - (2021)

Ignacio Masson, José Gonzalez Castelain, Sabrina Dubny, Natalia Othax, Fabio Peluso

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Freshwater communities respond to abiotic and biotic changes in the environment, and are widely used as indicators of environmental integrity. Fish have been one of the most used biological groups for this purpose. The Del Azul stream located in the pampean region of Argentina has...

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Internal phoshorus loading potential of a semiarid reservoir: an experimental study - (2021)

Hérika Cavalcante, Fabiana Araújo, Vanessa Becker, José Etham de Lucena Barbosa

Volume: 33 - Issue: 0

Resumo. Abstract: Aim To determine the internal P loading potential of semiarid tropical reservoir sediment while verifying the driving factors that affect P release rates. Methods An experiment was performed with water and sediment from the reservoir Boqueirão de Parelhas in Brazil. The effects...

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Investigating the diversity of fish parasites in the floodplain of the upper Paraná River: a long-term ecological monitoring - (2021)

João Otávio Santos Silva, Atsler Luana Lehun, Aparecida de Fátima Cracco Rodrigues, Lidiany Doreto Cavalcanti, Danilo Nunes Nicola, Wagner Toshio Hasuike, Ricardo Massato Takemoto

Volume: 33 - Issue: 0

Resumo. Abstract: Aim The aim of this study was to present the description of new species of fish parasites in native and non-native hosts and the parasite interaction / host, available in studies for 37 years in the upper Paraná River floodplain. Methods The sampling described in this study is...

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Land use, spatial heterogeneity of organic matter, granulometric fractions and metal complexation in reservoir sediments - (2021)

Thaís Fabiane Gomes Martins, Karen de Souza Ferreira, Bárbara Rani-Borges, Ivan Edward Biamont-Rojas, Sheila Cardoso-Silva, Viviane Moschini-Carlos, Marcelo Luiz Martins Pompêo

Volume: 33 - Issue: 0

Resumo. Abstract Aim This study aimed to evaluate land use, distribution of particle size fractions, organic matter (OM) and perform a metal quantification liable to complexation in the Itupararanga Reservoir (São Paulo, Brazil). This aquatic ecosystem is used for water supply and energy...

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Longitudinal patterns in distribution of native and non-native fish species in a regulated temperate Neotropical river - (2021)

Andrea Bertora, Fabián Grosman, Pablo Sanzano, Juan José Rosso

Volume: 33 - Issue: 0

Resumo. Abstract: Aim We evaluated the longitudinal patterns in distribution of native and non-native fish species in a hydrologically fragmented and environmentally variable lowland temperate river. Methods Four sites representing contrasting habitat and environmental conditions were sampled: a clear...

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Macrophytes banks as potential fish nursery areas in small hydropower reservoirs - (2021)

Rafaela Shizuko Yamashita Kimura, Eduardo Meneguzzi Brambilla, João Felipe Denys Pereira, Marcos Gomes Nogueira

Volume: 33 - Issue: 0

Resumo. Abstract: Aim This study verified if the macrophyte banks found in two reservoirs of small hydroelectric plants (SHPs) have a functional ecological role for the initial development of ichthyofauna. Additionally, we compared the differences in the structure of the fish assemblages along each...

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Marine free-living nematodes in semiarid inland waters - (2021)

Fábio Lucas de Oliveira Barros, Maria Cristina da Silva, Francisco José Victor de Castro, Miodeli Nogueira Júnior

Volume: 33 - Issue: 0

Resumo. Abstract: Aim This study reports the occurrence of five Nematoda genera previously considered as exclusively marine in inland waters. Methods Sediment samples were taken, weekly, during nine weeks, at a small spring at the Horto Florestal Olho D’Água da Bica, Cuité, PB, ca....

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Occurrence of non-native species in a subtropical coastal River, in Southern Brazil - (2021)

Larissa Faria, Fabrício de Andrade Frehse, Thiago Vinícius Trento Occhi, Barbara Maichak de Carvalho, Daniel Vicente Pupo, Sibelle Trevisan Disaró, Jean Ricardo Simões Vitule

Volume: 33 - Issue: 0

Resumo. Abstract: Aim This paper aims to concatenate and update the records of non-native species in a subtropical River, in Southern Brazil, warning about their possible impacts in this and other water bodies. Methods Monitoring was carried out in the Guaraguaçu River, the largest River of the...

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Optimized and validated protocol to the detection of the invasive bivalve Limnoperna fortunei from eDNA plankton samples - (2021)

Josiane Ribolli, Sophia Cassol, Samara Hermes Silva, Evoy Zaniboni Filho, Flávia Lucena Zacchi, Jacó Joaquim Mattos, Grasiela Fagundes Minatto Cardoso, Alex Pires de Oliveira Nuñer

Volume: 33 - Issue: 0

Resumo. Abstract: We optimized a methodology for plankton environmental DNA detection of the invasive golden mussel and validated it in samples from a Southern Brazil reservoir. Limnoperna fortunei is a successful invasive alien species that causes significant impacts on freshwater ecosystems. We...

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Organic matter decomposition in subtropical South America aquatic environments: a systematic and scientometric review - (2021)

Pâmela Rodrigues Gayer, Andréa Luiza de Mattos de Moraes, Pablo Santos Guimarães, Fabiana Gonçalves Barbosa, Edélti Faria Albertoni, Luiz Ubiratan Hepp

Volume: 33 - Issue: 0

Resumo. Abstract: Aim To evaluate the general situation of studies on the decomposition of organic matter in aquatic environments in the subtropical region of South America. Methods We compiled publications (1990-2018) with a combination of words referring to decomposition, debris, aquatic environments...

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Periphytic algae biomass at different shading levels: an experimental approach - (2021)

Helivania Sardinha dos Santos, Liliana Rodrigues

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Light is an essential component in the process of synthesis of organic compounds by photosynthetic organisms. Assuming that a higher level of luminosity would positively influence the production of biomass, we evaluated the influence of different levels of shading on the biomass of...

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Phosphorus and metals immobilization by periphyton in a shallow eutrophic reservoir - (2021)

Murilo Guimarães Balle, Carla Ferragut, Lúcia Helena Gomes Coelho, Tatiane Araujo de Jesus

Volume: 33 - Issue: 0

Resumo. Abstract: Aim: This study evaluated and compared the changes in the Total Phosphorus (TP) and metals (Cd, Cu, Ni and Pb) contents and accumulation rates in the periphyton on different substrate types (PET and glass) in wet and dry periods in a shallow eutrophic reservoir. Thus, the potential of...

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Phosphorus sorption potential of natural adsorbent materials from a Brazil semiarid region to control eutrophication - (2021)

Fernanda Monicelli, Karina Patrícia Vieira da Cunha, Fabiana Araújo, Vanessa Becker

Volume: 33 - Issue: 0

Resumo. Abstract: Aim The aim of the present study was to evaluate the potential soluble reactive phosphorus (SRP) sorption of three natural P adsorbents (Luvisol, Planosol, and Scheelite tailing) from Brazil’s semiarid region. Methods The adsorption tests were done under pH 8 conditions with the...

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Phytoplankton functional groups in shallow aquatic ecosystems from the semiarid region of Brazil - (2021)

Klivia Rilavia Paiva da Silva, José Etham de Lucena Barbosa, Lucineide Maria Santana, Luciana Gomes Barbosa

Volume: 33 - Issue: 0

Resumo. Abstract: Aim The study analyzed the potential use of the phytoplankton functional groups as an environmental bioindicator in aquatic ecosystems of Brazilian semiarid region. Methods Using data collected over five years of a natural lagoon and two reservoirs, we evaluate the relationship...

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Phytoplankton richness and abundance in response to seasonality and spatiality in a tropical reservoir - (2021)

Lyza Christine dos Santos Moura, Silvia Moreira dos Santos, Cláudia Alves de Souza, Carlos Roberto Alves dos Santos, Jascieli Carla Bortolini

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Species richness and abundance are important elements in understanding communities’ dynamics. In this way we evaluated the spatial and temporal variation of phytoplankton richness and density in a tropical reservoir, and its main drivers. We tested whether the temporal...

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Record of aquatic invertebrates associated with the bromeliads Aechmea ornata (Baker) and Aechmea recurvata (Klotzsch) L. B. Sm in two Atlantic Rainforest fragments of south Brazil - (2021)

Yuri Kataoka Silva, Anderson de Souza Moser, Mônica Ceneviva-Bastos, Ana Lucia Suriani Affonso

Volume: 33 - Issue: 0

Resumo. Abstract: Bromeliads are numerous both in diversity and abundance in the Atlantic Rainforest, one of the most threatened biomes on Earth. They are also an important habitat for several animal species that live in the water retained by its rosette structure. In this study, we aimed to characterize...

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Root growth and anatomy of Typha domingensis Pers. related to phosphorus availability - (2021)

Juliana Costa Bueno dos Santos, Evaristo Mauro de Castro, Vinícius Politi Duarte, Márcio Paulo Pereira, Felipe Fogaroli Corrêa, Fabricio José Pereira

Volume: 33 - Issue: 0

Resumo. Abstract Aim The capacity of macrophytes to colonize large areas is often referred to as dependent of the investment in root system and its capacity to uptake nutrients. This work aimed to evaluate the phosphorus (P) effects on the root growth and anatomy as well as its capacity to uptake this...

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Sediment phosphorus fractionation and flux in a tropical shallow lake - (2021)

Jéssica Papera, Fabiana Araújo, Vanessa Becker

Volume: 33 - Issue: 0

Resumo. Abstract: Aim The aim of the present study is to evaluate the potential phosphorus (P) release from the sediment to the water column of a tropical shallow lake in the northeast of Brazil, based on the sediment P fractions and on the flux of P between water and sediment. Methods We used a...

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Simple methodological approach for assessing microbial mineralization rates in an aqueous anaerobic medium - (2021)

Marcela Bianchessi da Cunha-Santino, Irineu Bianchini Junior

Volume: 33 - Issue: 0

Resumo. Abstract: The aim of this study was to propose and discuss a simple manometric method to quantify the emission rates of gases resulting from the microbial anaerobic mineralization of organic resources, as leaves, thin branches, and macrophyte detritus. The proposed method can be used under...

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Species-specific response of phytoplankton to zooplankton grazing in tropical eutrophic reservoirs - (2021)

Juliana dos Santos Severiano, Camila Bezerra Amaral, Anamaria Silva Diniz, Ariadne do Nascimento Moura

Volume: 33 - Issue: 0

Resumo. Abstract: Aim To test the hypothesis that zooplankton changes the structure of phytoplankton in tropical reservoirs by reducing the biomass of algal species susceptible to herbivory. Methods We experimentally evaluated the species-specific responses of phytoplankton to zooplankton within...

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The global scientific literature on applications and trends in the use of functional morphological groups in phytoplankton studies - (2021)

Ricardina Maria Lemos Trindade, Anny Kelly Nascimento Ribeiro, João Carlos Nabout, Jascieli Carla Bortolini

Volume: 33 - Issue: 0

Resumo. Abstract: Aim The application of deconstructive approaches in aquatic ecology has been increasing recently. Especially for phytoplankton, some functional classifications summarize similar traits of a group of species to understand organisms’ response to landscape variability. One of these...

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Upper Paraná River floodplain: synthesizing knowledge over time - (2021)

Nicolli Cristina Osório, Liliana Rodrigues

Volume: 33 - Issue: 0

Resumo. Abstract: Aim Considering the great environmental and social impact that floodplains have, several studies have been performed in the upper Paraná River floodplain. In this study, we applied a scientometric analysis to understand the evolution of scientific knowledge generated in the...

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Water quality and spatial and seasonal dynamics in the largest water supply reservoir in Brazil and implications for diatom assemblages - (2021)

Majoi de Novaes Nascimento, Mark Bush, Denise de Campos Bicudo

Volume: 33 - Issue: 0

Resumo. Abstract: Aim in this paper we investigated how spatial factors and seasonal dynamics influenced the diatom community in a tropical deep environment of low productivity waters in Brazil. Methods we used physical and chemical characteristics of the water and planktonic diatoms from 9 sampling...

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Zooplankton functional complementarity between temporary and permanent environments - (2021)

Rayanne Barros Setubal, Reinaldo Luiz Bozelli

Volume: 33 - Issue: 0

Resumo. Abstract: Aims This study aims to evaluate the functional complementarity of the zooplankton community between temporary ponds and permanent lagoons. We hypothesize that temporary environments will be functionally more diverse than permanent environments and will have different functional...

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Alpha and beta diversities of Trichoptera (Insecta) assemblages in natural and rural subtropical streams - (2020)

Mayara Breda, Rozane Maria Restello, Ricardo Giovenardi, Alex Pinheiro Vizzotto, Briseidy Soares, Luiz Ubiratan Hepp

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The aim of this study was to determine the diversity of Trichoptera in subtropical streams and the effects of environmental variables and geographical position on alpha and beta diversity in natural and rural streams. Methods We collected Trichoptera with a Surber sampler in 12...

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Application of multivariate methods and geoestatistics to model the relationship between CO2 emissions and physicochemical variables in the Hidrosogamoso reservoir, Colombia - (2020)

Ingry Natalia Gómez Miranda, Fabio Vélez Macías, Gustavo Antonio Peñuela Mesa

Volume: 32 - Issue: 0

Resumo. Abstract: Aim This article deals with the estimation of a model for CO2 emissions in the Hidrosogamoso reservoir based on the organic matter level and water quality. This is in order to determine the impact of the creation of a tropical reservoir on the generation of greenhouse gases (GHG), and...

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Aquatic environments in the One Health context: modulating the antimicrobial resistance phenomenon - (2020)

Juliana Alves Resende, Vânia Lúcia da Silva, Claudio Galuppo Diniz

Volume: 32 - Issue: 0

Resumo. Abstract: From an anthropocentric perspective, aquatic environments are important to maintain health and survival, however, as they are sometimes managed based on misconception, they are considered a convergent pathway for anthropogenic residues and sanitation. Thus, it is observed that these...

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Autecology of Cylindrospermopsis raciborskii (Woloszynska) Seenayya et Subba Raju - (2020)

Roberta Liberato Pagni, Patrícia Bortoletto de Falco, André Cordeiro Alves dos Santos

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Cylindrospermopsis raciborskii (Woloszynska) Seenayya and Subba Raju, also called Raphidiopsis raciborskii, is a diazotrophic and filamentous cyanobacterium with terminal heterocytes, belonging to the order Nostocales. It has been the focus of several studies due to its toxicity...

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Biological strategy to improve decomposition of organic matter in tilapia pond - (2020)

Gustavo Ruschel Lopes, Hugo Mendes de Oliveira, Gabriel Fernandes Alves de Jesus, Maurício Laterça Martins, Carlos Henrique Araújo de Miranda Gomes, Thiago Soligo, José Luiz Pedreira Mouriño

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The increment of decomposition of organic matter in sediment samples from Nile tilapia farms was evaluated with the introduction of Bacillus subtilis and B. licheniformis bacteria. Methods Sediment samples placed in 18L plastic boxes received single dose inoculum with the...

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Campsurus truncatus Ulmer, 1920 (Polymitarcyidae): an Ephemeroptera in eutrophic waters - (2020)

Mônica Luisa Kuhlmann, Hélio Rubens Victorino Imbimbo, Helena Mitiko Watanabe

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The order Ephemeroptera, together with Trichoptera and Plecoptera, has been considered as sensitive in environmental quality assessment. However, the species Campsurus truncatus Ulmer 1920 (Polymitarcyidae) has been sampled in anthropically altered sites. In this paper, data on the...

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Ciliates in ecotoxicological studies: A minireview - (2020)

Jéssica Andrade Vilas-Boas, Marcus Vinicius Xavier Senra, Roberto Júnio Pedroso Dias

Volume: 32 - Issue: 0

Resumo. Abstract: The present study has conducted a minireview of ecotoxicological studies using ciliated microeucaryotes, presenting a breif history, describing the current scenario and pointing out their methodological approaches gaps. We highlight in a clear and objective way the ecological importance...

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Climate change reflected in one of the largest wetlands in the world: an overview of the Northern Pantanal water regime - (2020)

Wilkinson Lopes Lázaro, Ernandes Sobreira Oliveira-Júnior, Carolina Joana da Silva, Solange Kimie Ikeda Castrillon, Claumir César Muniz

Volume: 32 - Issue: 0

Resumo. Abstract: The dynamics of Pantanal is totally influenced by the flood pulse, which is, in part, a consequence of rainfall regime from the Amazon in the direction to the headlands and the lowlands where the water is retained, and the flood plain is formed. The impacts of climate change have not...

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Day time variations of zooplankton species composition: observations from the wetlands of Assam, India - (2020)

Papia Das, Sulata Kar, Uma Das, Maibam Bimola, Devashish Kar, Gautam Aditya

Volume: 32 - Issue: 0

Resumo. Abstract: Aim An attempt to justify the variations in the species composition of zooplankton over the day time period was made using the freshwater lakes of Assam, India, as a model study area. Methods The water bodies were sampled using a conical plankton net five times between 6 am and 6 pm...

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Diet of Phylloicus (Trichoptera: Calamoceratidae) caddisfly larvae in forest streams of western Pará, central Brazilian Amazonia - (2020)

Diego Ramos Pimentel, Sheyla Regina Marques Couceiro, Ana Karina Moreyra Salcedo

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The aquatic larvae of the Phylloicus (Trichoptera: Calamoceratidae) caddisflies are typical shredders. However, the trophic classification of Phylloicus has been based on the morphology and behaviour of the larvae. The aim of this study was to investigate the diet of caddisfly...

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Differences in land use modify Odonata assemblages in the Cerrado-Caatinga ecotone - (2020)

Daniel Silas Veras, Guilherme Santana Lustosa, Lucas Pereira Moura, Maria Fernanda Ribeiro Ferreira, Leandro Juen

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The present study tested the hypothesis that the composition of the odonate assemblages in environments with greater habitat integrity is significantly different from that of areas with reduced habitat integrity. Methods The samples were collected between April 2017 and November...

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Eating at the edges: the feeding mode and the individual-resource networks of a characid fish in the periphyton - (2020)

Ubirajara Lima Fernandes, Grasiela Casas, Taise Miranda Lopes, Leandra Palheta, Liliana Rodrigues, Bárbara Dunck

Volume: 32 - Issue: 0

Resumo. Abstract: Aim We evaluated the predation interactions between Moenkhausia sanctaefilomenae and periphytic algae, in the presence or absence of an intermediate consumer (zooplankton). We tested the following hypotheses using a microcosms experiment: 1) fish consume zooplankton when available,...

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Editorial: Freshwater sustainability and aquatic ecology in a fast-changing world - (2020)

André Megali Amado, Rafael Marques Almeida, Simone Jaqueline Cardoso, Joyce Andreia dos Santos, Antonio Fernando Monteiro Camargo

Volume: 32 - Issue: 0

Resumo.

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Effectiveness of protected areas for the conservation of aquatic invertebrates: a study-case in southern Brazil - (2020)

Rozane Maria Restello, Daiane Battistoni, Jesse Renan Sobczak, Alice Teresa Valduga, Sônia Beatriz Balvedi Zackrzevski, Elisabete Maria Zanin, Vanderlei Secretti Decian, Luiz Ubiratan Hepp

Volume: 32 - Issue: 0

Resumo. Abstract: Aim This work aimed to analyze the effectiveness of protected areas (PA) as maintainers of the fauna of benthic macroinvertebrates and the use of these in the water management of these areas. We tested the hypothesis that in streams located within the PA there will be greater abundance...

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Environmental drivers and composition of assemblages of immature odonates (Insecta) in a subtropical island in southern Brazil - (2020)

Mateus Marques Pires, Ana Emília Siegloch, Malva Isabel Medina Hernández, Maurício Mello Petrucio

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Describe the diversity of immature stages of Odonata (Insecta) in streams from a subtropical island in southern Brazil and investigate the influence of environmental variables on the composition of their assemblages. Methods Eleven low-order streams (1st to 3rd order) were sampled...

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Environmental predictors of charophytes in a subtropical reservoir - (2020)

Thamis Meurer, Roger Paulo Mormul, Norma Catarina Bueno

Volume: 32 - Issue: 0

Resumo. Abstract: Aim In this study we check whether three simple environmental factors are good predictors of charophytes occurrence. Methods The Characeae material was sampled two times a year during the years of 2001, 2002 and 2003, over 235 sites distributed along eight rivers located in Itaipu, a...

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First evidence of a spawning site of the endangered fish Brycon orbignyanus (Valenciennes, 1850) (Characiformes, Bryconidae) in the Middle Uruguay River, Brazil - (2020)

David Augusto Reynalte-Tataje, Marlon da Luz Soares, Marthoni Vinicius Massaro, Rodrigo Bastian, Fernando Mayer Pelicice

Volume: 32 - Issue: 0

Resumo. Abstract: Aim This study provides the first direct evidence about the location of a spawning site of Brycon orbignyanus (Valenciennes, 1850) in the Middle Uruguay River. Methods Sampling was carried out with a plankton net (500 µm) in November 2017 in the Uruguay River near the confluence...

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First record of microplastics in two freshwater fish species (Iheringhthys labrosus and Astyanax lacustris) from the middle section of the Uruguay River, Brazil - (2020)

Tacieli dos Santos, Rodrigo Bastian, Juliana Felden, Adelita Maria Rauber, David Augusto Reynalte-Tataje, Franco Teixeira de Mello

Volume: 32 - Issue: 0

Resumo. Abstract Aim The aim was to analyze the incidence of microplastics in the diet of fish in the middle Uruguay River. Methods The present work analyzed the gastrointestinal content of two species: Astyanax lacustris and Iheringichthys labrosus. Results This study provides the first evidence of...

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First record of the Asian clam Corbicula fluminea (Müller, 1774) (Bivalvia: Cyrenidae) at Poxim-Açu River, northeastern Brazil - (2020)

Leonardo Cruz da Rosa, José Oliveira Dantas

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The objective of this work is to provide a new occurrence record of the Asian clam Corbicula fluminea in the Poxim-Açu River, northeastern Brazil. Methods Samplings were carried out on October 20th of 2016 at five sites along Poxim-Açu River. At each site five...

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First records of non-native species Malaysian prawn Macrobrachium rosenbergii (Decapoda: Palaemonidae) in an important South American hydrographic system - (2020)

Thiago Augusto da Silva, Eduardo Luís Cupertino Ballester, Almir Manoel Cunico

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The objective of this work is to record the occurrence of non-native species Macrobrachiun rosenbergii in water bodies of the Piquiri River basin, State of Paraná, Brazil, an important South American hydrographic system. Methods Samples were obtained from October 2015 to...

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Fish farming in cages: a practice to be restricted in Brazil - (2020)

Antonio Fernando Monteiro Camargo, Rafael Vieira Amorim

Volume: 32 - Issue: 0

Resumo. Abstract: World aquaculture has been growing sharply in recent decades and Brazilian production of fish in cages has grown considerably since the end of the 1990s. This increase is related to the development of federal government regulations and the large number of medium and large hydroelectric...

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Forest fragmentation influences the diet of cichlids Apistogramma agassizii (Steindachner, 1875) and Aequidens tetramerus (Heckel, 1840) (Actinopterygii: Cichliformes) in streams of the Western Amazon - (2020)

Lucena Rocha Virgilio, Cleyton Holanda de Brito, Monik da Silveira Suçuarana, Lisandro Juno Soares Vieira

Volume: 32 - Issue: 0

Resumo. Abstract: Aims To evaluate the effects of replacing riparian vegetation with pasture in the diet of Apistogramma agassizii and Aequidens tetramerus. Methods The study was carried out in the municipality of Senador Guiomar, Acre. We sampled three streams divided into three stretches each (100...

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Freshwater ecosystems of Mainland Ecuador: diversity, issues and perspectives - (2020)

Jorge Emilio Celi, Francisco Villamarín

Volume: 32 - Issue: 0

Resumo. Abstract: Ecuador is one of the smallest and most densely populated countries in South America. In spite of this, it is also one of the 17 megadiverse countries worldwide and home to the largest number of species per unit area. Most aquatic ecosystems in mainland Ecuador have historically faced...

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Gut content analysis confirms the feeding plasticity of a generalist fish species in a tropical river - (2020)

Igor David Costa, Ronaldo Angelini

Volume: 32 - Issue: 0

Resumo. Abstract Aim In this paper, we compared the diet composition of the South American silver croaker, Plasgioscion squamosissimus in preserved and impacted areas (agrarian land use) of an Amazonian river. Our objective was to quantify the plasticity in diet across different habitats and evaluate...

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Ichthyoplankton studies as referential for the management and monitoring of fishery resources in the Brazilian Amazon basin - (2020)

Diego Maia Zacardi, Joyce Andreia dos Santos, Lucas Silva de Oliveira, Ruineris Almada Cajado, Paulo S. Pompeu

Volume: 32 - Issue: 0

Resumo. Abstract: Studies on ichthyoplankton ecology become essential when one realizes the importance and influence of this component in dynamics, conservation, and maintenance of fishery resources. However, ecological information about this subject is still scarce and has not been properly valued and...

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Influence of different riparian vegetation widths and substrate types on the communities of larval Odonata (Insecta) in southern Brazilian streams - (2020)

Mateus Marques Pires, Nícolas Felipe Drumm Müller, Cristina Stenert, Leonardo Maltchik

Volume: 32 - Issue: 0

Resumo. Abstract: Aim We assessed the influence of substrate type and categories of riparian vegetation widths on the community structure of Odonata (Insecta) in southern Brazilian streams. Methods Sampling took place in twelve stream reaches differing in their riparian vegetation widths (from more...

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Life history traits of the exotic freshwater snail Melanoides tuberculata Müller, 1774 (Gastropoda, Thiaridae), and its sensitivity to common stressors in freshwaters - (2020)

Denise Tieme Okumura, Odete Rocha

Volume: 32 - Issue: 0

Resumo. Abstract: Aim In the present study has analyzed several aspects of the life history traits of Melanoides tuberculata, an exotic species, under laboratory conditions, and its response to some stressors has also been applied. Methods Sensitivity to two toxic substances was tested. The mollusks...

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Management of Pirarucu (Arapaima gigas, Teleostei, Osteoglossidae) in Sustainable Use Units as a proposal for the restoration of aquatic ecosystems - (2020)

Eucilene Alves Santana, Edson Fontes de Oliveira, Nataluzo da Silva Balbino, Helen Gurgel

Volume: 32 - Issue: 0

Resumo. Abstract: Sustainable Use Units have been carrying out sustainable management since the 1990s in the State of Amazonas, leading to research on the influence of management plans on restoring ecosystems. We developed an integrative review and analyzed official documents, data from the Brazilian...

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Maturity, growth and natural mortality rate of the introduced fish Parachromis managuensis (Perciformes: Cichlidae) in the semiarid region of Brazil - (2020)

Amanda Graziele Araújo Resende, Elton José de França, Cícero Diogo Lins de Oliveira, Francisco Marcante Santana

Volume: 32 - Issue: 0

Resumo. Abstract: Aim The present study aimed to estimate the sexual maturity, growth and mortality rates of the jaguar guapote, Parachromis managuensis, an introduced fish species in the Brazilian semiarid region. Methods Specimens were collected between December 2015 and November 2016, in a dam at...

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Not all viruses in nature are human enemies: a perspective on aquatic virus ecology in Brazil - (2020)

Pedro Ciarlini Junger, Rafael Marques Almeida, Raquel Mendonça, Vinicius Fortes Farjalla, Rossana Correa Netto de Melo, Fábio Roland, Nathan Barros

Volume: 32 - Issue: 0

Resumo. Abstract: Viruses cause various diseases in humans through vector-borne (e.g., Zika and dengue fever), airborne (e.g., measles) and water-borne (e.g., hepatitis) transmission, as well as direct physical contact (e.g., AIDS and herpes). Recently, the new coronavirus (SARS-CoV-2) pandemic has...

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Obituary: Albano Schwarzbold (1941-2019) - (2020)

Fabiana Schneck, Sandra Maria Hartz, Adriano Sanches Melo

Volume: 32 - Issue: 0

Resumo.

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Phytoplankton as bioindicators of water quality in Nasarawa reservoir, Katsina State Nigeria - (2020)

Zahraddeen Hassan Yusuf

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Phytoplankton monitoring as bioindicators to assess the health of the Nasarawa reservoir and also to evaluate the relationship between phytoplankton and reservoir environmental variables. Methods Phytoplankton and water samples from Nasarawa reservoir (Nigeria) were collected and...

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Plant species invasion effects on litter dynamics in subtropical streams - (2020)

Lucas Eugenio Fontana, Rozane Maria Restello, Tanise Luisa Sausen, Luiz Ubiratan Hepp

Volume: 32 - Issue: 0

Resumo. Abstract Aim We evaluated the effect of the presence of Hovenia dulcis Thunb. (Rhamnaceae) in riparian zones on the organic matter dynamics of small subtropical streams. Methods We conducted this study in three subtropical Atlantic Forest streams with different densities of H. dulcis in...

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Pollution tolerance, flight capacity and natural history explain metacommunity structure in high-altitude stream insects - (2020)

Mireile Reis dos Santos, Victor Satoru Saito, Paulo Augusto Zaitune Pamplin, Allan Arantes Pereira, Alaíde Aparecida Fonseca-Gessner

Volume: 32 - Issue: 0

Resumo. Abstract: Aim To test how different taxonomic and functional groups of aquatic insects from high-altitude streams respond to environmental and spatial gradients at multiple scales in Southeast of Brazil. Methods Specimens were collected in 26 high-altitude streams distributed over a gradient of...

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Record of parasitic oomycetes on neotropical copepods in aquatic environments of Northwestern Patagonia (Argentina) - (2020)

Roberto Daniel Garcia, Fabián Gastón Jara, Mónica Mirta Steciow

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Oomycetes are one of the most widespread and destructive parasitic groups in the world. The first infection of oomycetes on copepod Parabroteas sarsi Daday 1901 was recently recorded in America. Oomycetes infection on this species makes their eggs unviable and could differentially...

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Relative condition factor: Le Cren's legacy for fisheries science - (2020)

Éder André Gubiani, Renata Ruaro, Vinícius Ricardo Ribeiro, Úrsula Morgana Gomes de Santa Fé

Volume: 32 - Issue: 0

Resumo. Abstract: Aim In this paper we present a scientometric analysis aimed at to assess and quantify the contribution of Le Cren’s condition factor and the main ideas advanced by ‘Le Cren, 1951’ to studies on the health of individuals or populations in aquatic environments....

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Revisiting the concept of longitudinal gradients in reservoirs - (2020)

Fernanda Melo Carneiro, Luis Mauricio Bini

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Reservoirs are an increasingly common type of aquatic ecosystem in countries where hydropower is a dominant energy source. Understanding the functioning of these systems is essential to establish monitoring strategies or priorities for their use. The main goal of this study was to...

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Spatial and temporal variation of the phytoplankton structure in cascading oligotrophic reservoirs of southeast Brazil - (2020)

Ana Margarita Loaiza-Restano, Gisele Carolina Marquardt, Carla Ferragut, Carlos Eduardo de Mattos Bicudo

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Structural changes in phytoplankton was evaluated in one ultraoligotrophic and two oligotrophic cascading reservoirs during two climatic periods (austral winter and summer) of 2014. Changes in phytoplankton biomass, species composition, and codons (functional groups) were evaluated...

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State of the art of identification of eggs and larvae of freshwater fish in Brazil - (2020)

David Augusto Reynalte-Tataje, Carolina Antonieta Lopes, Marthoni Vinicius Massaro, Paula Betina Hartmann, Rosalva Sulzbacher, Joyce Andreia Santos, Andréa Bialetzki

Volume: 32 - Issue: 0

Resumo. Abstract: Aim This study aimed to assist in guiding research with eggs and larvae of continental fish in Brazil, mainly in the knowledge of the early development, as well as to present the state of the art and to point out the gaps and future directions for the development of researches in the...

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Stream contamination by trace elements: biota incorporation and phytoremediation - (2020)

Rafael Chaves Loureiro, Luiz Ubiratan Hepp

Volume: 32 - Issue: 0

Resumo. Abstract: In this review, we present information about the presence of trace elements on streams and the consequences related to the increase of these chemical elements on aquatic systems. Although several studies on trace elements contamination in aquatic environments are conducted on point...

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Trends in aquatic ecology research associated with urbanization evolution during three decades in Santa Catarina Island/SC - (2020)

Michelle das Neves Lopes, Felippe Luiz Dalpiaz, Bruno Rech, Julia Daniel Teixeira, Isabella Seelig Soares Ribeiro, Danton Magri, Daniela Grijó de Castro, Maurício Mello Petrucio, Nei Kavaguichi Leite

Volume: 32 - Issue: 0

Resumo. Abstract: This paper systematically assessed trends of aquatic ecology publications related to the urbanization growth during three decades (1990-2010) in Santa Catarina Island. The study was carried out in fifteen watersheds of Santa Catarina Island, located in Florianópolis city,...

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Zooplankton trajectory before, during and after a hydropower dam construction - (2020)

Jaqueline Schmidt, Patrícia Dammski Borges de Andrade, André Andrian Padial

Volume: 32 - Issue: 0

Resumo. Abstract: Aim Understanding the impact of anthropogenic activities is central for supporting management and conservation efforts. In aquatic ecosystems, the construction of dams for hydroelectric power plants is a major environmental change that turns the riverine ecosystem into a reservoir...

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A snapshot of the limnological features in tropical floodplain lakes: the relative influence of climate and land use - (2019)

Maria Tereza Ribeiro Alves, Karine Borges Machado, Manuel Eduardo Ferreira, Ludgero Cardoso Galli Vieira, João Carlos Nabout

Volume: 31 - Issue: 0

Resumo. Abstract Aim This study aimed to investigate the relative influence of climate (temperature and precipitation) and land use on limnological features of 30 floodplain lakes in the Araguaia River, in Central Brazil, an important river that drains in the Brazilian Cerrado. Methods The lakes were...

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Abiotic parameters and planktonic community of an earthen fish pond with continuous water flow - (2019)

Lúcia Helena Sipaúba-Tavares, Rodrigo Ney Millan, Érica Camargo Oliveira Capitano, Bruno Scardoelli-Truzzi

Volume: 31 - Issue: 0

Resumo. Abstract Aim Limnological conditions, phytoplankton and zooplankton communities in a fishpond highly affected by management during the dry and rainy seasons are investigated. Methods Water samples were analyzed for physicochemical parameters; soil samples were analyzed for macro- and...

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Anthropogenic impacts on aquatic bacteria: a perspective from the tropics - (2019)

Michaela Ladeira de Melo, Hugo Sarmento

Volume: 31 - Issue: 0

Resumo. Abstract Bacterioplankton comprises a highly diverse group of microorganisms, which are dominant in aquatic ecosystems, and play a central role in ecosystem functioning and biogeochemical cycles. Due to their high turnover and dispersal rates, as well as high adaptability and plasticity, microbes...

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Aquatic food webs will need to stand on giants’ shoulders - (2019)

Ronaldo Angelini

Volume: 31 - Issue: 0

Resumo. Abstract Aquatic food webs have been especially impacted in the last thirty years. This is particularly true for trophic webs with Mobile Generalist Species (MGS), which are species with high mobility (movement and dispersal) and flexibility in both foraging and habitat use. In general, MGS are...

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Assessment of phytoplankton species in gut and feces of cultured tilapia fish in Egyptian fishponds: Implications for feeding and bloom control - (2019)

Zakaria Mohamed, Zeinab Ahmed, Asmaa Bakr

Volume: 31 - Issue: 0

Resumo. Abstract Aim This study was carried out to determine which phytoplankton species, as a natural food, can be ingested and digested by Nile tilapia (Oreochromis niloticus L.). Methods During this study, phytoplankton in the gut contents of Nile tilapia collected from three fishponds in southern...

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Biology of non-native species (Rhaphiodon vulpinus Agassiz, 1829) (Characiformes, Cynodontidae) in a cage fish farm area, Upper Paraná River Basin, Brazil - (2019)

Aymar Orlandi Neto, Lidiane Franceschini, Letícia de Oliveira Manoel, Rosicleire Veríssimo-Silveira, Rosilene Luciana Delariva, Igor Paiva Ramos

Volume: 31 - Issue: 0

Resumo. Abstract Aim To assess the dietary, populational and parasitological aspects of the non-native wild species Rhaphiodon vulpinus in an area under the influence of cage fish farm, in the Ilha Solteira Reservoir, São Paulo State. Methods Fifty-one specimens of R. vulpinus were captured...

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Cladocera distribution along an environmental gradient on the Cerrado-Amazon ecotone: a preliminary study - (2019)

Leandro Schlemmer Brasil, Ana Luiza-Andrade, Tiago Borges Kisaka, Paulo Ilha, Francisco Diogo Rocha Sousa

Volume: 31 - Issue: 0

Resumo. Abstract: Aim Our objective in this study is to understand Cladocera species distribution along an environmental gradient in forest and cropland landscapes in the southern Amazon. Methods We collected Cladocera communities and environmental variables from five streams and verified their...

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Community structure of invertebrate fauna in Central Chilean Rivers - (2019)

Patricio De los Ríos, Gustavo Díaz, Jorge Gonzalez, Konrad Górski, Evelyn Habit

Volume: 31 - Issue: 0

Resumo. Abstract Aim River systems of Central Chile are short, steep and fast flowing. They are characterized by discharge regimes dominated by rainfall and snowmelt. Invertebrate fauna is highly endemic. This study aimed to describe the community structure of invertebrate in eight river systems in...

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Diet of benthivorous fish and prey availability in streams of the Pirapó River basin-PR - (2019)

Renata Guglielmetti, Marlene Rodrigues Silva, Janet Higuti, Rosemara Fugi

Volume: 31 - Issue: 0

Resumo. Abstract Aim This study aimed to investigate the diet of seven species of fish that consume predominantly benthic macroinvertebrates, and the availability of these organisms in the environment. We analyzed the occurrence of trophic segregation between species and the correlation between the...

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Distribution of aquatic macrophytes along depth gradients in Lajeado Reservoir, Tocantins River, Brazil - (2019)

Ester Vieira Noleto, Marcus Vinícius Moreira Barbosa, Fernando Mayer Pelicice

Volume: 31 - Issue: 0

Resumo. Abstract Aim The present study investigated the diversity of aquatic macrophytes in the littoral zone of Lajeado Reservoir, Tocantins River. We characterized spatial variations in species richness, composition and abundance along depth gradients. Methods Macrophyte sampling occurred at the...

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Effects of primary productivity on beta diversity of ecological communities - (2019)

Leticia Siman Bora, Juliana Wojciechowski, Jaqueline Dittrich, André Andrian Padial

Volume: 31 - Issue: 0

Resumo. Abstract Aim Several ecological factors are predicted to affect beta diversity - the dissimilarity of communities among localities or through time. Considering the effect of primary productivity, there is a divergence in the literature concerning if it is positive, negative or hump-shaped. This...

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Evaluation of the embryotoxicity in zebrafish (Danio rerio) of the flocculant and coagulant compounds used for water remediation - (2019)

Diego Sousa Moura, Rafael Oliveira Duarte da Mota, José Francisco Gonçalves Júnior, Newton Flávio de Vasconcelos, Marco Aurélio Reis, Cesar Koppe Grisolia

Volume: 31 - Issue: 0

Resumo. Abstract Aim: Leaching from mining activities reaches water bodies, causing water contamination and acidification by toxic metals. As a consequence, oxygen depletion occurs, with the disappearance of certain benthic organisms, losses in phytoplankton and zooplankton biomass, and fish mortality....

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Extreme drought events and the sustainability of fish farming in net cages in reservoirs of the semi-arid northeastern region in Brazil - (2019)

Gustavo Gonzaga Henry-Silva, Hênio do Nascimento Melo-Junior, José Luiz Attayde

Volume: 31 - Issue: 0

Resumo. Abstract Reservoirs play important roles in local socioeconomic development and are particularly relevant in developing countries. The rearing of Nile tilapia (Oreochromis niloticus) in cages is one of the fastest growing activities carried out in reservoirs since it is a strategy to sustain the...

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First record of Apistogrammoides pucallpaensis Meinken, 1965 (Perciformes, Cichlidae) for Brazil, in addition to fecundity information - (2019)

Jomara Cavalcante de Oliveira, Jonas Alves de Oliveira, Danielle Pedrociane Cavalcante Rossato

Volume: 31 - Issue: 0

Resumo. Abstract Aim The objective of this work is to record the occurrence of Apistogrammoides pucallpaensis in Brazilian territory, since so far its distribution is restricted to Peru and Colombia. Methods The collections were carried out in the year of 2013, during the research of ichthyofauna of...

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From Africa to Brazil: detection of African Oreochromis niloticus parasites in Brazilian fish farms - (2019)

Diego Azevedo Zoccal Garcia, Mário Luís Orsi, Ângela Teresa Silva-Souza

Volume: 31 - Issue: 0

Resumo. Abstract Aim To evaluate the introduction of Oreochromis niloticus gill parasites in the Paranapanema River basin, northern Paraná, southern Brazil, as well as to inventory its occurrences in Brazilian fish farms and discuss the risks of transmission to native fauna. Methods The gills of...

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How increased atmospheric carbon dioxide and ‘The Law of the Minimum’ are contributing to environmental obesity - (2019)

James Bryan Cotner

Volume: 31 - Issue: 0

Resumo. Abstract Justus von Liebig observed that one could greatly increase agricultural yields by adding relatively small quantities of nitrogen (N), phosphorus (P) and potassium (K) to soils. This finding led to the most recent agricultural revolution. But because most plants and microbes can be...

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How much do we know about the groundwater quality and its impact on Brazilian society today? - (2019)

Ricardo Hirata, Alexandra Vieira Suhogusoff

Volume: 31 - Issue: 0

Resumo. Abstract Groundwater is an essential resource for society and the environment in Brazil. More than 557 m3/s (17.5 km3/y) are extracted through 2.5 million wells to meet demand in cities and the countryside, generating an economy of R$ 56 billion per year (US$ 14 billion/year). The aquifer has a...

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Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event - (2019)

Jéssica Nayara de Carvalho Leite, Vanessa Becker

Volume: 31 - Issue: 0

Resumo. Abstract Aim The aim of this study was to analyze the water quality of a tropical, semi-arid reservoir after a reflooding. In terms of impact on water quality after a drought event, it is expected that there will be improvements with the reflooding. Less algal biomass, increased water...

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Limnology of shallow lakes of the semi-arid Central Pampa of Argentina - (2019)

Santiago Andrés Echaniz, Alicia María Vignatti

Volume: 31 - Issue: 0

Resumo. Abstract Aim The Central Pampa of Argentina has three recognized phytogeographic regions that arise due to the decrease in rainfall towards the west. The area has numerous lakes that are mainly temporary, with hydroperiods that relate to climatic cycles, although some of them have changed due...

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Long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage - (2019)

Pedro Sartori Manoel, Virginia Sanches Uieda

Volume: 31 - Issue: 0

Resumo. Abstract Aim We investigated the long-term effects of a rural landscape on the structure and trophic organization of a fish assemblage. Methods We compared environmental data and data from fish assemblage structure and trophic organization sampled in a stream located in a rural area, within a...

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Methods of sampling benthic invertebrates in lotic habitats: a spatial and temporal evaluation - (2019)

Larissa Lima da Cunha, Maria Ines Bulgari Alves, Erika Ramos Ono, Virginia Sanches Uieda

Volume: 31 - Issue: 0

Resumo. Abstract Aim We compared the effectiveness of two sampling devices, the Surber sampler and the D-frame net, commonly used in the analysis of invertebrate fauna structure in biomonitoring programs. These programs use the response of benthic invertebrates to assess changes in aquatic ecosystems...

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Population structure of Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) in Miranda Hydroelectric Plant Reservoir, Araguari river, Minas Gerais, Brazil - (2019)

Raquel Costa e Silva, Marina Calixto Cunha, Emerson Contreira Mossolin, Giuliano Buzá Jacobucci

Volume: 31 - Issue: 0

Resumo. Abstract Aim The present study aimed to analyze a M. amazonicum population structure in a reservoir of the “Triângulo Mineiro”, Brazil. Methods Monthly surveys were carried out from April/2012 to May/2013 at the Miranda Hydroelectric Plant Reservoir located in Araguari river,...

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Proposal of a trophic state index in semiarid reservoirs using data of the Banabuiú Basin, state of Ceará, Brazil - (2019)

Hosineide de Oliveira Rolim, Ana Bárbara de Araújo Nunes, Francisco Jonathan de Sousa Cunha Nascimento, Jarbas Rodrigues Chaves

Volume: 31 - Issue: 0

Resumo. Abstract Aim This study aimed to develop a Trophic State Index that simulates the cumulative impact in 18 reservoirs in the Banabuiú basin, located in the semiarid region of the State of Ceará. Methods Analyses were made for physical (temperature, transparency and turbidity),...

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Rethinking resting eggs decapsulating - (2019)

Marina Isabela Bessa da Silva, Déborah Maria de Oliveira, Luciana Pena Mello Brandão, Francisco Antônio Rodrigues Barbosa, Paulina Maria Maia-Barbosa

Volume: 31 - Issue: 0

Resumo. Abstract Aim Temperature and light have been recognized as important factors for ephippia hatching in temperate and tropical freshwater systems. Oddly some authors suggested that decapsulation of resting eggs would be a pro when it comes to ex situ hatching studies, exposing those eggs to a...

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Structure and ecological aspects of zooplankton (Testate amoebae, Rotifera, Cladocera and Copepoda) in highland streams in southern Brazil - (2019)

Pablo Henrique dos Santos Picapedra, Cleomar Fernandes, Gilmar Baumgartner

Volume: 31 - Issue: 0

Resumo. Abstract Aim: This study aimed to characterize the zooplankton structure in highland streams in southern Brazil, Pelotas River sub-basin, as well as the respective relationships with the environmental conditions in the different seasons. Methods Zooplankton was collected using a plankton net...

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The challenge of restoring tropical freshwater ecosystems - (2019)

Reinaldo Luiz Bozelli

Volume: 31 - Issue: 0

Resumo. Abstract We are living a growing worldwide process of degrading the bases of sustaining life. In Brazil, this threat is intensified by the growing fragility of environmental protection structures. Ecological restoration is an alternative to face the degradation of aquatic environments. It has...

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Water pollution: one of the main Limnology challenges in the Anthropocene - (2019)

Gabrielle Rabelo Quadra, José Reinaldo Paranaíba Vilela Alves Teixeira, Nathan Barros, Fábio Roland, André Megali Amado

Volume: 31 - Issue: 0

Resumo. Abstract: Humankind is defining a new geological time. The Anthropocene epoch is marked by changes in the geological processes, hydrological regimes, biosphere structure, among other processes, due to human expansion over the landscape worldwide. Biogeochemical cycle’s acceleration, the...

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Can fishways restore river connectivity? A case study using β diversity as a method of assessment - (2018)

Hugo Marques, João Henrique Pinheiro Dias, Igor Paiva Ramos

Volume: 30 - Issue: 0

Resumo. Abstract Aim β diversity was used as an indicator to test the hypothesis that a fishway can increase river connectivity, as a reduction in the value of this metric indicates greater similarity among fish assemblages. Methods Quarterly sampling was performed with gillnets upstream and...

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Changes in fish species composition in the middle and lower Tietê River (São Paulo, Brazil) throughout the centuries, emphasizing rheophilic and introduced species - (2018)

Welber Senteio Smith, Marta Severino Stefani, Evaldo Luiz Gaeta Espíndola, Odete Rocha

Volume: 30 - Issue: 0

Resumo. Abstract Aim: This paper is aimed at describing the changes of fish species in the middle and lower courses of the Tietê River, emphasizing rheophilic and invasive fish species as well as identifying the causes for such alterations. Methods Data collection consisted in: intense revision...

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Changes in the structure of the phytoplankton community in a Nile tilapia fishpond - (2018)

João Alexandre Saviolo Osti, Andréa Tucci, Antonio Fernando Monteiro Camargo

Volume: 30 - Issue: 0

Resumo. Abstract Aim Our objectives were to recognize species that can serve as biological descriptors and evaluate the changes in the phytoplankton community throughout the grow-out period of the Nile tilapia (Oreochromis niloticus Linnaeus 1758) related to management practices and to limnological...

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Community structure of periphytic Zygnematophyceae (Streptophyta) in urban eutrophic ponds from central Brazil (Goiânia, GO) - (2018)

Francielle Karla Lopes da Silva, Bárbara Medeiros Fonseca, Sirlene Aparecida Felisberto

Volume: 30 - Issue: 0

Resumo. Abstract Aim This study aimed to investigate the community structure of Zygnematophyceae algae in the periphyton of nine shallow urban eutrophic ponds from central Brazil. Additionally, we compared two different substrates, hypothesizing that community structure attributes (chlorophyll a;...

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Comparing lacustrine environments: the importance of the kind of habitat on the structure of fishes - (2018)

Reinaldo José de Castro, Raoul Henry, Carla Ferragut, Mayara Casartelli

Volume: 30 - Issue: 0

Resumo. Abstract Aim Fish diversity in two lentic environments: a lake connected (Barbosa lake) to a river and an artificial reservoir (Ninfeias reservoir) were determined in the dry and rainy periods in 2015. We expected to find more diversity in the connected lake and greater abundance in the...

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Desmids (Zygnematophyceae) from the littoral zone of an urban artificial lake: taxonomic aspects and geographical distribution - (2018)

Camila Akemy Nabeshima Aquino, Gabriela Medeiros, Jascieli Carla Bortolini, Cinthia Coutinho Rosa Favaretto, Douglas Ticiani, Fiorindo José Cerqueira, Norma Catarina Bueno

Volume: 30 - Issue: 0

Resumo. Abstract Aim: The aim of this study was to assess the taxonomic aspects and geographical distribution of the periphytic desmids from two different substrates in the littoral zone of an urban artificial lake. Methods Samples of epiphytic and epilithic desmids were collected by grass and rock...

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Diatom assemblages (Bacillariophyta) in six tropical reservoirs from southeast Brazil: species composition and spatial and temporal variation patterns - (2018)

Gisele Carolina Marquardt, Carlos Eduardo de Mattos Bicudo, Thelma Alvim Veiga Ludwig, Luc Ector, Carlos E. Wetzel

Volume: 30 - Issue: 0

Resumo. Abstract Aim Relationships between species composition and variation patterns in diatom assemblages over six tropical reservoirs located in Southeast Brazil were explored. Methods Surface-sediment and phytoplankton diatom assemblages were determined and Canonical Correspondence Analysis was...

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Diel vertical migration of Cladocera in a compartment of a tropical reservoir - (2018)

Erika dos Santos Silva, Odete Rocha, Maria José dos Santos-Wisniewski

Volume: 30 - Issue: 0

Resumo. Abstract Aim This study seeks to analyze the vertical migration pattern of Cladocera species as related with the physical and chemical parameters of the water. Methods Samplings were carried out at 3-h intervals for 24 h in January 15 on the Sapucaí River compartment of Furnas...

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Does the oscillation of the water volume of the reservoir influence in the same way in fish diet? - (2018)

Jean Carlos Dantas de Oliveira, Jônnata Fernandes de Oliveira, Luzia Geize Fernandes Rebouças, José Luís Costa Novaes, Danielle Peretti

Volume: 30 - Issue: 0

Resumo. Abstract Aim: To evaluate the fish feeding and to establish the preferential and secondary items of their diets, to determine the trophic guilds and the possible trophic structure variations in function of the water volume in Umari reservoir, Rio Grande do Norte, Brazilian semiarid. Methods The...

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Editorial: Homage to Carlos Eduardo de Mattos Bicudo - (2018)

Denise de Campos Bicudo

Volume: 30 - Issue: 0

Resumo.

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Editorial: Reservoirs Ecology - (2018)

Gilmar Perbiche-Neves, Antonio Fernando Monteiro Camargo

Volume: 30 - Issue: 0

Resumo.

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Effects of invasive species snails in continental aquatic bodies of Pernambucano semiarid - (2018)

Paulo Rogério de Souza Almeida, Silvano Lima do Nascimento Filho, Girlene Fábia Segundo Viana

Volume: 30 - Issue: 0

Resumo. Abstract Aim The aim of this study was to survey the species of molluscs and to evaluate the effect of exotic species on the native mollusks of three reservoirs in the Pajeú Basin Cachoeira II, Jazigo and Serrinha. Methods Sampling was carried out with trawl net (5 mm mesh opening) and...

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Effects of temperature increase and nutrient enrichment on phytoplankton functional groups in a Brazilian semi-arid reservoir - (2018)

Maria da Conceição de Souza, Luciane Oliveira Crossetti, Vanessa Becker

Volume: 30 - Issue: 0

Resumo. Abstract Aim Our study aimed to evaluate changes in the phytoplankton functional groups brought about by increases in temperature and nutrients predicted by the Intergovernmental Panel on Climate Change (IPCC) scenario for semi-arid regions. Methods Two experiments were performed, one in the...

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Eutrophication in aquatic ecosystems: a scientometric study - (2018)

Jéssica Alves da Costa, João Paulo de Souza, Ana Paula Teixeira, João Carlos Nabout, Fernanda Melo Carneiro

Volume: 30 - Issue: 0

Resumo. Abstract Aim: Reveal the direction for future studies about eutrophication, or even reveal the preoccupation among the scientific community about this environmental problem. With a systematic synthesis of eutrophication studies, scientists may be able to understand the state of the literature on...

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Expansion of invasive Ceratium furcoides (Dinophyta) toward north-central Brazil: new records in tropical environments - (2018)

Weliton José da Silva, Ina de Souza Nogueira, Enaide Marinho de Melo-Magalhães, Sarah Haysa Mota Benício, Sheila Magalhães Pessoa, Mariângela Menezes

Volume: 30 - Issue: 0

Resumo. Abstract: Aim We record new occurrences of the invasive species Ceratium furcoides in reservoirs and their affluents in the Paraná River basin, State of Goiás (GO), central-western Brazil, and in some localities in the São Francisco River basin, northeastern region. Methods...

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Extreme droughts drive tropical semi-arid eutrophic reservoirs towards CO2 sub-saturation - (2018)

Jurandir Rodrigues de Mendonça Júnior, André Megali Amado, Luciana de Oliveira Vidal, Arthur Mattos, Vanessa Becker

Volume: 30 - Issue: 0

Resumo. Abstract Aim: This study aimed to evaluate the carbon dioxide (CO2) dynamics in tropical semi-arid reservoirs during a prolonged drought period as well as to test if the trophic state affects the CO2 saturation. Methods This study was performed in four reservoirs located in the tropical...

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Influence of environmental variables on the diatom communities of oligotrophic reservoirs for public water supply (Guarulhos, Southeast Brazil) - (2018)

Simone Alves de Oliveira, Carlos Eduardo de Mattos Bicudo

Volume: 30 - Issue: 0

Resumo. Abstract Aim: Our study aimed at analyzing the diatom community structure of the plankton, periphyton, and surface sediments, and their relationship with the environmental variables of two reservoirs, Tanque Grande and Cabuçu, located in the city of Guarulhos, Metropolitan Region of...

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Is competition an interaction as relevant as predation for tropical planktonic cladocerans? - (2018)

Tânia Cristina dos Santos Ferreira, Marlene Sofia Arcifa, Andrés Ricardo Domingos

Volume: 30 - Issue: 0

Resumo. Abstract Aim To test the relevance of competition and predation for the two most abundant and frequent cladoceran populations, the medium-sized Ceriodaphnia richardi Sars, 1901 and the large-sized Daphnia gessneri Herbst, 1967, in a tropical shallow lake. Methods Laboratory experiments and...

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Is it possible to evaluate the ecological status of a reservoir using the phytoplankton community? - (2018)

Aline Martins Vicentin, Eduardo Henrique Costa Rodrigues, Viviane Moschini-Carlos, Marcelo Luiz Martins Pompêo

Volume: 30 - Issue: 0

Resumo. Abstract Aim: The present study aims to evaluate the ecological status of the Broa reservoir through the application of the ecological index Evenness E2 on phytoplankton. Methods Phytoplankton samples from surface were obtained during the dry period (June/2015) in 9 points (P1 to P9), along a...

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Is thermal stability a factor that influences environmental heterogeneity and phytoplankton distribution in tropical lakes? - (2018)

Luciana Gomes Barbosa, Francisco Antônio Rodrigues Barbosa, Carlos Eduardo de Mattos Bicudo

Volume: 30 - Issue: 0

Resumo. Abstract Aim To evaluate the effects of environmental heterogeneity promoted by thermal stratification on the distribution of limnologic variables and phytoplankton functional groups (FGs) in two natural lakes. Methods Monthly measurements were performed over a five-year period in the...

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Opportunities and challenges for fish culture in Brazilian reservoirs: a review - (2018)

Evoy Zaniboni-Filho, Janaína dos Santos Pedron, Josiane Ribolli

Volume: 30 - Issue: 0

Resumo. Abstract Aim Aquaculture plays an important role in the world and in Brazil. Artificial construction of water bodies, such as ponds and reservoirs, has allowed for fish culture in cages in those environments, generating conflicts over the use of these public waters. The producers are seeking to...

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Periphytic Actinella Lewis (Ochrophyta, Bacillariophyceae) species from an Environmental Protection Area in the Brazilian Amazon - (2018)

Luís Gustavo de Castro Canani, Rebecca da Silva Fraia, Sérgio de Melo

Volume: 30 - Issue: 0

Resumo. Abstract Aim The aim of this study is to present the Actinella species found in periphytic samples collected from an Environmental Protection Area in Santarém (PA, Brazil), to comment on their morphology by comparing them with existing records, and to increase knowledge of the...

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Periphytic algal community in lentic environments of the Upper Paraná River floodplain: seasonal and spatial variation - (2018)

Kisay Lorena Adame, Barbara Dunck, Liliana Rodrigues

Volume: 30 - Issue: 0

Resumo. Abstract Aim: This study aimed to evaluate the influence of seasonal variation in the hydrological regime and of limnological variables on species richness of periphytic algae in lakes of the Upper Paraná River floodplain. Methods The study area is located in the last undammed stretch of...

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Periphytic Cosmarium (Zygnematophyceae, Desmidiaceae) in lentic environments of the Upper Paraná River floodplain: Taxonomy and ecological aspects - (2018)

Nicolli Cristina Osório, Aparecida Miranda Polinario, Bárbara Dunck, Kisay Lorena Adame, Luciana Carapunarla, Maria Gabriela Junqueira, Ubirajara Lima Fernandes, Liliana Rodrigues

Volume: 30 - Issue: 0

Resumo. Abstract Aim A taxonomic study of the species of the genus Cosmarium Corda ex Ralfs (Desmidiaceae) was conducted in two lentic environments of the Upper Paraná River Floodplain (Garças and Patos lakes). Methods The samples were collected in November 2016. Two petioles of...

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Phosphorus dynamics in the water of tropical semiarid reservoirs in a prolonged drought period - (2018)

Herika Cavalcante, Fabiana Araújo, Vanessa Becker

Volume: 30 - Issue: 0

Resumo. Abstract Aim To verify the vertical distribution of phosphorus in the water and to identify the predominant forms of P in the water column for understand the phosphorus dynamics in tropical semiarid reservoirs during a prolonged drought period. Methods Two reservoirs from the semiarid region...

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Pigmented Euglenophyceae of a lentic environment at the Upper Paraná River Floodplain, Brazil - (2018)

Susicley Jati, Carla Cristiane de Jesus Borsalli, Sueli Train

Volume: 30 - Issue: 0

Resumo. Abstract Aim Contributing to taxonomic knowledge on Pigmented Euglenophyceae at the Upper Paraná River Floodplain by enlarging the biodiversity survey in this ecosystem, in addition to contributing to the knowledge on the geographical distribution of this group in Brazil. Methods...

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Relationship among carnivorous macrophyte Utricularia foliosa L. and species composition and life forms of periphytic algae community - (2018)

Thiago Rodrigues dos Santos, Carla Ferragut, Carlos Eduardo de Mattos Bicudo

Volume: 30 - Issue: 0

Resumo. Abstract Aim Present study evaluated the life forms and taxonomic structure of the periphytic algae community on Utricularia foliosa L. (modified leaf and stem) and artificial substrate during the four seasons in a tropical shallow reservoir. Methods We evaluated the periphyton on natural and...

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Relationship between zooplankton richness and area in Brazilian lakes: comparing natural and artificial lakes and trends - (2018)

Luisa Orbitelli Longato, Iuri Emmanuel de Paula Ferreira, Gilmar Perbiche-Neves

Volume: 30 - Issue: 0

Resumo. Abstract Aim We analyzed the relationship between zooplankton species richness and the area of 34 natural and 55 artificial lakes in Brazil (total of 89), with area varying between 0.01 to 2,430 km2. Methods A total of 33 studies were found in the specialized bibliography, containing data...

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Reservoir management: an opinion to how the scientific community can contribute - (2018)

Irineu Bianchini Junior, Marcela Bianchessi da Cunha-Santino

Volume: 30 - Issue: 0

Resumo. Abstract Aim To report possible academic experiences as strategic contributions to help manage reservoirs ensuring multipurpose uses. Methods In this opinion article, we point out and discuss academic activities that are usually developed to assess environmental studies in reservoirs....

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Responses of the phytoplankton functional structure to the spatial and temporal heterogeneity in a large subtropical shallow lake - (2018)

Luciane Oliveira Crossetti, Lacina Maria Freitas-Teixeira, Juliana Elisa Bohnenberger, Uwe Horst Schulz, Lúcia Ribeiro Rodrigues, David da Motta-Marques

Volume: 30 - Issue: 0

Resumo. Abstract Aim Studies on biological communities that take into account only the species composition and abundances (or biomass) and their relative contributions, most of the time, do not reflect their ecological functions, especially considering the wide spatial and temporal variation of large...

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Spatial and temporal dynamics of functional groups of phytoplankton in a tropical shallow lake - (2018)

Núbia da Silva, João Paulo de Oliveira Santos, Danielle Lima de Oliveira, Joseilson dos Santos Silva, Kelly Dayane Pereira da Silva, Ênio Wocyli Dantas, Luciana Gomes Barbosa

Volume: 30 - Issue: 0

Resumo. Abstract Aim To evaluate the structure and dynamics of functional phytoplankton groups (FGs) over a macrophyte cover gradient and their relations with environmental variable in small, shallow clear-water lake. Methods Physical, chemical and phytoplankton analyses were made between August 2014...

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Spatial distribution and temporal variation of microcrustaceans assembly (Cladocera and Copepoda) in different compartments of a reservoir in the brazilian semiarid region - (2018)

Josiane Souza Santos, Nadson Ressyé Simões, Sérgio Luiz Sonoda

Volume: 30 - Issue: 0

Resumo. Abstract Aim: The objective of this study was to investigate the spatial and temporal variation of microcrustacean assemblages of a reservoir in the Brazilian semiarid region. Methods Physical and chemical water variables and samples of microcrustaceans were collected at eight sites of the...

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Spatial-temporal analysis of the diet of a non-native fish in the Santa Cruz Reservoir, Brazilian semi-arid - (2018)

Jônnata Fernandes de Oliveira, Jean Carlos Dantas de Oliveira, José Luís Costa Novaes, Antonia Elissandra Freire de Souza, Marla Melise Oliveira de Sousa, Andréa Bezerra dos Santos, Danielle Peretti

Volume: 30 - Issue: 0

Resumo. Abstract Aim The diet of Plagioscion squamosissimus present in the Santa Cruz Reservoir, Rio Grande do Norte, Brazil, was investigated, evaluating the influences of spatial and temporal variations and abiotic factors in the utilization of food resources. Methods The samplings were performed...

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Study approach and step by step development of a fish-based multimetric index for reservoirs: a case study presentation from a neotropical cascade system - (2018)

Maria Letizia Petesse

Volume: 30 - Issue: 0

Resumo. Abstract Aim The present paper approached some issues related to the construction and adaptation of the Reservoir Fish Assemblage Index (RFAI). Method the case study presents the step by step construction of the multimetric index adopted for the Tietê cascade reservoir system, and it is...

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Taxonomy and ecology of order Surirellales (Bacillariophyceae) in tropical reservoirs in Southeastern of Brazil - (2018)

Krysna Stephanny de Morais, Elaine Rodrigues Bartozek, Stéfano Zorzal-Almeida, Denise C. Bicudo, Carlos Eduardo de Mattos Bicudo

Volume: 30 - Issue: 0

Resumo. Abstract Aim The aim of this study was to inventory the diatom species of order Surirellales present in the surface sediments of tropical reservoirs (São Paulo State, Brazil) and to correlate their distribution with environmental (pH, total phosphorus, and total nitrogen) and spatial...

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The impact of a biomanipulation experiment on the ichthyofauna diet from a neotropical reservoir in Brazilian semiarid - (2018)

Cristiane de Carvalho Ferreira Lima Moura, Jônnata Fernandes Oliveira, José Luís Costa Novaes, Rodrigo Silva da Costa, Darlan Dantas Alves de Araújo, Danielle Peretti

Volume: 30 - Issue: 0

Resumo. Abstract Aim To evaluate the impact of a biomanipulation experiment on the feeding of fish species from a neotropical semiarid reservoir, before and after the removal of the exotic species Oreochromis niloticus. Methods The values of Food Index were analyzed for six species: Oreochromis...

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The use of polyaluminium chloride as a restoration measure to improve water quality in tropical shallow lakes - (2018)

Fabiana Araújo, Hélio Rodrigues dos Santos, Vanessa Becker, José Luiz Attayde

Volume: 30 - Issue: 0

Resumo. Abstract Aim The aim of this study was to evaluate the performance of the coagulant Polyaluminium chloride (PAC) in water quality improvement of six eutrophic shallow lakes in Brazilian semiarid region. Methods We evaluated the effect of PAC in turbidity, humic substances (UV254), total...

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Trophic structure of the fish community throughout the reservoirs and tributaries of the Middle and Lower Tietê River (São Paulo, Brazil) - (2018)

Welber Senteio Smith, Camila Galvão Francisco Pereira, Evaldo Luiz Gaeta Espindola, Odete Rocha

Volume: 30 - Issue: 0

Resumo. Abstract Aim: We investigated the use of food resources throughout the reservoirs and tributaries of the Middle and Lower Tietê River. Methods The samplings were made in July 2000 (dry period) and January 2001 (rainy period). The fish samples were collected using two batteries of gill...

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Water volume reduction increases eutrophication risk in tropical semi-arid reservoirs - (2018)

Carlos Alberto Nascimento da Rocha Junior, Mariana Rodrigues Amaral da Costa, Rosemberg Fernandes Menezes, José Luiz Attayde, Vanessa Becker

Volume: 30 - Issue: 0

Resumo. Abstract Aim Global patterns of temperature and precipitation have significantly changed over the last century and nearly all predictions point to even greater changes by the end of 2100. Long periods of drought in semi-arid regions generally reduce reservoirs and lakes water level, increasing...

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Abundance and size structure of planktonic protist communities in a Neotropical floodplain: effects of top-down and bottom-up controls - (2017)

Bianca Ramos de Meira, Fernando Miranda Lansac-Tôha, Bianca Trevizan Segovia, Felipe Rafael de Oliveira, Paulo Roberto Bressan Buosi, Susicley Jati, Luzia Cleide Rodrigues, Fábio Amodêo Lansac-Tôha, Luiz Felipe Machado Velho

Volume: 29 - Issue: 0

Resumo. Abstract: Aim: We aimed to assess the influence of bottom-up and top-down control mechanisms on the abundance and size structure of protist communities (heterotrophic flagellates and ciliates). We formulated the following hypothesis: bottom-up control mechanisms, related to the availability of...

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Adjacent environments contribute to the increase of zooplankton species in a neotropical river - (2017)

Francieli de Fátima Bomfim, Tatiane Mantovano, Diogo Castanho Amaral, Welinton Sousa Palhiarini, Claudia Costa Bonecker, Fábio Amodêo Lansac-Tôha

Volume: 29 - Issue: 0

Resumo. Abstract Aim: The distribution of the zooplankton community along the Paraná River and in adjacent environments (tributaries and lakes) was evaluated, as well as the contribution of the community present in these environments to the species composition of the Paraná River. It was...

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Assessing disruption of longitudinal connectivity on macroinvertebrate assemblages in a semiarid lowland river - (2017)

Marta Leiva, Mercedes Marchese, Liliana Diodato, Héctor Tévez

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Our aim in this study was evaluate the effects of flow regulation for irrigation on the macroinvertebrate assemblages in a semiarid river. Methods We sampled two reaches in Dulce River; one placed upstream a weir that diverts flow into a network of irrigation channels and the other...

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Climate factors and limnological conditions shaping phytoplankton community in two subtropical cascading reservoirs - (2017)

Ana Paula Vestena Cassol, Maria Angélica Oliveira, André Luis Domingues, Waterloo Pereira-Filho, Mariana Durigon, Juliana Ferreira da Silva

Volume: 29 - Issue: 0

Resumo. Abstract Aim: A series of dams along the course of a river forms a complex cascading reservoir system. The interconnectivity of the dams is perceived with the reduction of turbidity and phosphorus and the increase of specific richness throughout the system. Designing a management system that...

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Copepod assemblage structure (Crustacea: Copepoda) along a longitudinal environmental gradient in a tropical river-floodplain system, Brazil - (2017)

Welinton Sousa Palhiarini, Leilane Talita Fatoreto Schwind, Rodrigo Leite Arrieira, Luiz Felipe Machado Velho, Fábio Amodêo Lansac-Tôha

Volume: 29 - Issue: 0

Resumo. Abstract Aim: In this study, we analyzed the structure of the copepod community along a longitudinal axis of the last undammed stretch of the Upper Paraná River floodplain, downstream of Porto Primavera reservoir. We hypothesized that (i) copepod assemblage would show an increase in the...

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Development of low-cost culture media for Ankistrodesmus gracilis based on inorganic fertilizer and macrophyte - (2017)

Lúcia Helena Sipaúba-Tavares, Alexandra Maria Donadon Lusser Segali, Flavia Almeida Berchielli-Morais, Bruno Scardoeli-Truzzi

Volume: 29 - Issue: 0

Resumo. Abstract Aim: The influence of three different culture media on the growth and biochemical composition of Ankistrodemsus gracilis microalgae is evaluated. Methods Microalgae were placed in a bath culture during 28 days, with inorganic fertilizer (NPK) and macrophyte Eichhornia crassipes as...

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Differences in environmental heterogeneity promote the nestedness of Chironomidae metacommunity in Neotropical floodplain lakes - (2017)

Gisele Daiane Pinha, Rafael Prandini Tramonte, Camila Gentilin Bilia, Alice Michiyo Takeda

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Gradients of environmental heterogeneity perform a strong influence on the distribution of organisms and determine differences in composition, where more physically complex habitats harbor greater species richness than those simpler. We took as assumptions that differences in...

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Editorial - (2017)

Luiz Felipe Machado Velho, Susicley Jati, Antonio Fernando Monteiro Camargo

Volume: 29 - Issue: 0

Resumo.

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Effects of bromeliad flowering event on the community structuring of aquatic insect larvae associated with phytotelmata of Aechmea distichantha Lem. (Bromeliaceae) - (2017)

Felipe Emiliano Amadeo, Juliana Déo Dias, Bianca Trevizan Segovia, Nadson Ressyé Simões, Fábio Amodêo Lansac-Tôha

Volume: 29 - Issue: 0

Resumo. Abstract Aim: We aimed to understand how aquatic insect larvae communities associated with bromeliad phytotelmata are affected by plant architecture, predators and resources (local factors), and by geographical distance (regional factors) in two different plant phenological phases. Bromeliad...

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Effects of dredging and macrophyte management on the fish species composition in an old Neotropical reservoir - (2017)

André Luiz Henríques Esguícero, Marlene Sofia Arcifa

Volume: 29 - Issue: 0

Resumo. Abstract: Aim: As part of the remodeling of an almost century-old dam, in the Rio Jacaré-Guaçu, the dredging and management of macrophytes were carried out in the Gavião Peixoto Reservoir (São Paulo State, Brazil). Data for the reservoir and a river stretch upstream...

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Environmental heterogeneity explains species turnover but not nestedness in fish assemblages of a Neotropical basin - (2017)

Oscar Eduardo Peláez, Filipe Manoel Azevedo, Carla Simone Pavanelli

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Heterogenous environments can contribute to maintain biodiversity. Traditionally beta diversity studies have focused on determining the effect of environmental variables on the total dissimilarity of species composition. However, decomposing beta diversity in species replacement and...

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Environmental variables driving the larval distribution of Limnoperna fortunei in the upper Paraná River floodplain, Brazil - (2017)

Jéssica Ernandes-Silva, Gisele Daiane Pinha, Roger Paulo Mormul

Volume: 29 - Issue: 0

Resumo. Abstract Aim: To verify the temporal dynamics of Limnoperna fortunei larval stages and to identify the main environmental variables driving the larval density patterns in an area highly impacted by reservoirs. Methods Samplings were performed quarterly, from February to December 2014, in 10...

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Factors affecting assemblage attributes of freshwater Oligochaeta in Neotropical shallow floodplain lakes - (2017)

Vanessa Ernandes de Amo, Jéssica Ernandes da Silva, Gisele Daiane Pinha, Flávio Henrique Ragonha, Roger Paulo Mormul

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Identify the effects of sediment composition and water conditions on diversity, richness, evenness, density and composition of freshwater Oligochaeta in shallow floodplain lakes. Methods We sampled 13 shallow floodplain lakes quarterly during the year 2010 in the Upper...

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Factors that drive zooplankton diversity in Neo-Tropical Savannah shallow lakes - (2017)

Claudia Padovesi-Fonseca, Renan de Souza Rezende

Volume: 29 - Issue: 0

Resumo. Abstract Zooplankton is an important community in aquatic ecosystems due to its linkage between primary producers and secondary consumers also playing a key role in cycling of organic materials. Aim: Therefore, our objective was to evaluate the effects of physicochemical variables of the water on...

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Feeding habits of the freshwater crab Sodhiana iranica from Southern Iran - (2017)

Sana Sharifian, Ehsan Kamrani

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Freshwater crab, Sodhiana iranica, is an endemic gecarcinucid crab that has been recently reported from Southern Iran. This research examined some feeding aspects of S. iranica from Eelood freshwater spring, Southern Iran. Methods Crabs were randomly sampled from April 2012 to...

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Gyrodactylidae (Monogenea: Platyhelminthes) gill parasites of Tetragonopterinae (Characiformes: Characidae) from the upper Paraná River floodplain, Brazil - (2017)

Eloiza Muniz Capparros, Ricardo Massato Takemoto

Volume: 29 - Issue: 0

Resumo. Abstract Aim: This study records Gyrodactylus neotropicalis and Anacanthocotyle anacanthocotyle in new hosts: Astyanax lacustris and Moenkhausia forestii, on the upper Paraná river floodplain. Besides, ecological aspects of the parasites distribution are explored. Methods Both host...

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Importance of dam-free stretches for fish reproduction: the last remnant in the Upper Paraná River - (2017)

Jislaine Cristina Silva, Rafael Rogério Rosa, Eliana Maria Galdioli, Claudemir Martins Soares, Wladimir Marques Domingues, Samuel Veríssimo, Andréa Bialetzki

Volume: 29 - Issue: 0

Resumo. Abstract Aim: This study uses the abundance of fish eggs and larvae to evaluate the importance of the main channel of the Paraná River and the adjacent areas of the floodplain, in the last dam-free stretch in the Brazilian territory, for the spawning and development of fish of different...

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Influence of tributaries on the periphytic diatom community in a floodplain - (2017)

Andressa Bichoff, Nicolli Cristina Osório, Daiane Trevisan Ruwer, Kisay Lorena Adame Montoya, Bárbara Dunck, Liliana Rodrigues

Volume: 29 - Issue: 0

Resumo. Abstract In impacted floodplains, small tributaries have an essential role in the maintenance of ecosystem biodiversity. Aim: We aimed to characterise the periphytic diatom community (Bacillariophyta) in a protected area at the Upper Paraná River floodplain considering the importance of...

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Integrated analysis of water quality from two rivers used for public supply in southern Brazil - (2017)

Flávia Bernardo Chagas, Camila Fátima Rutkoski, Gregori Betiato Bieniek, Gean Delise Leal Pasquali Vargas, Paulo Afonso Hartmann, Marília Teresinha Hartmann

Volume: 29 - Issue: 0

Resumo. Abstract: Aim This study aimed to evaluate the water quality of streams that are used for public supply, through an integrated analysis using a biotic index, as well as physicochemical and microbiological parameters. Methods The data were obtained monthly, from November 2014 to April 2015, at...

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Intra-annual variation in planktonic ciliate species composition (Protista: Ciliophora) in different strata in a shallow floodplain lake - (2017)

Gustavo Mayer Pauleto, Felipe Rafael de Oliveira, Bianca Trevizan Segovia, Bianca Ramos Meira, Fernando Lansac-Tôha, Paulo Roberto Bressan Buosi, Luiz Felipe Machado Velho

Volume: 29 - Issue: 0

Resumo. Abstract Aim: We aimed to evaluate the variation in planktonic ciliate species composition in different strata of the Guaraná Lake, encompassing high and low water periods, at the Upper Paraná River floodplain. Methods Samplings were collected monthly between March 2007 and...

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Is it possible to simplify environmental monitoring? Approaches with zooplankton in a hydroelectric reservoir - (2017)

Ana Caroline de Alcântara Missias, Leonardo Fernandes Gomes, Hasley Rodrigo Pereira, Leo Caetano Fernandes da Silva, Ronaldo Angelini, Ludgero Cardoso Galli Vieira

Volume: 29 - Issue: 0

Resumo. Abstract Aim: In order to contribute to the knowledge about the simplification of biological surveys, this study evaluated the use of substitute groups, numeric and taxonomic resolution for the three main groups of zooplankton (cladocerans, copepods and rotifers) in a Hydropower Plant (UHE). The...

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Is similar the distribution of Chironomidae (Diptera) and Oligochaeta (Annelida, Clitellata) in a river and a lateral fluvial area? - (2017)

Daniela Aparecida Silveira Cesar, Raoul Henry

Volume: 29 - Issue: 0

Resumo. Abstract Numerous factors may affect the pattern of distribution of benthic fauna in a river mouth region and, among the macroinvertebrates, Chironomidae and Oligochaeta are the most abundant groups and most tolerant to environmental changes. Aim The aim of this study was to evaluate the...

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Longitudinal gradient in limnological variables in the Upper Paraná River: a brief description and the importance of undammed tributaries - (2017)

Natália Fernanda Santana, Larissa Strictar Pereira, Maria do Carmo Roberto, Sue Ellen do Amaral Gomes, Thomaz Aurélio Pagioro, Roger Paulo Mormul

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Describe the limnological pattern in a longitudinal gradient in the Paraná River, a highly dammed river, in a stretch localized between two dams, but rich in undammed tributaries. Methods Twelve transects in the longitudinal gradient of the Paraná River were sampled,...

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Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River - (2017)

Janet Higuti, Eliezer de Oliveira da Conceição, Ramiro de Campos, Vitor Góis Ferreira, Jonathan da Rosa, Márian Bozzo de Oliveira Pinto, Koen Martens

Volume: 29 - Issue: 0

Resumo. Abstract Aim: We assessed the effect of environmental factors on the structure of periphytic ostracods communities along the river-floodplain system of the Upper Paraná River. We predict that the higher distance from Porto Primavera dam downstream would lead to higher diversity and density...

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Phytoplankton community dynamic detection from the chlorophyll-specific absorption coefficient in productive inland waters - (2017)

Fernanda Sayuri Yoshino Watanabe, Enner Herenio de Alcântara, Thanan Walesza Pequeno Rodrigues, Nariane Marselhe Ribeiro Bernardo, Luiz Henrique da Silva Rotta, Nilton Nobuhiro Imai

Volume: 29 - Issue: 0

Resumo. Abstract Aim: In this research, we investigated the spectral variability of the specific phytoplankton absorption coefficient, a*φ, measured in a tropical meso-to-hypertrophic reservoir, aiming to find spectral features associated with the chlorophyll-a (chla) and other accessory pigments...

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Phytoplankton community in the last undammed stretch of the Paraná River: considerations on the distance from the dam - (2017)

Susicley Jati, Jascieli Carla Bortolini, Geovani Arnhold Moresco, Aline Caroline Magro de Paula, Luzia Cleide Rodrigues, Patricia Iatskiu, Alfonso Pineda, Bárbara Furigo Zanco, Matheus Vieira da Silva, Yasmin Rodrigues Souza

Volume: 29 - Issue: 0

Resumo. Abstract Aim: To evaluate the influence of upstream reservoirs on the temporal and spatial variation of the phytoplankton community in the Paraná River channel and the importance of its main tributaries in reducing the oligotrophication process along this stretch of the river. Materials...

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Phytoplankton functional groups indicators of environmental conditions in floodplain rivers and lakes of the Paraná Basin - (2017)

Barbara Furrigo Zanco, Alfonso Pineda, Jascieli Carla Bortolini, Susicley Jati, Luzia Cleide Rodrigues

Volume: 29 - Issue: 0

Resumo. Abstract Aim: The objective of this study was to evaluate the efficacy of phytoplankton functional groups as indicators of environmental conditions in floodplain rivers and lakes with different trophic state and connectivity degree to the Paraná River. Phytoplankton functional groups (FGs)...

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Richness and distribution of aquatic macrophytes in a subtropical reservoir in São Paulo, Brazil - (2017)

Ana Carolina Pavão, André Cordeiro Alves dos Santos, Flávia Bottino, Roseli Frederigi Benassi, Maria do Carmo Calijuri

Volume: 29 - Issue: 0

Resumo. Abstract Aims: to evaluate the richness, biomass and distribution of aquatic macrophytes in a subtropical reservoir in the dry and rainy seasons. Methods this study was carried out in the Itupararanga Reservoir, an important water source in São Paulo State, undergoing a continuous process...

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Rivers affect the biovolume and functional traits of phytoplankton in floodplain lakes - (2017)

Alfonso Pineda, Geovani Arnhold Moresco, Aline Caroline Magro de Paula, Luciane Maria Nogueira, Patricia Iatskiu, Yasmin Rodrigues de Souza, Larissa Mozini Reis, Luzia Cleide Rodrigues

Volume: 29 - Issue: 0

Resumo. Abstract Aim: We analyzed the temporal distribution (dry and rainy periods) of phytoplankton functional groups (biovolume) from lakes connected to dammed (S1 - Paraná River) and non-dammed rivers (S2 - Baia River and S3 - Ivinhema River) in the upper Paraná River floodplain, Brazil....

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Salinity effects on photosynthetic pigments, proline, biomass and nitric oxide in Salvinia auriculata Aubl. - (2017)

Maria Angélica da Conceição Gomes, Inácio Abreu Pestana, Claudete Santa-Catarina, Rachel Ann Hauser-Davis, Marina Satika Suzuki

Volume: 29 - Issue: 0

Resumo. Abstract Aims: Effects of salt stress on the physiology of Salvinia auriculata were investigated. Method Plants were supplemented with 0, 50, 100 and 150 mmol L-1 NaCl and incubated for 5 days. NO content was evaluated after 2 hours and 5 days. Photosynthetic pigments, proline and nutrients...

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Small dams also change the benthic macroinvertebrates community in rocky rivers - (2017)

Leticia de Mattos, Larissa Dal Molin Kruger, Ana Lucia Suriani Affonso, Gilmar Perbiche-Neves, Sidnei Pressinatte Junior

Volume: 29 - Issue: 0

Resumo. Abstract Aim: Here we analyzed some basic ecological attributes (richness and density) of the benthic community in a stretch of a rocky river under the influence of a small dam of a meter in height, forming a small reservoir of run-of-river type. Methods Sediment samples were taken with a...

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Spatial and temporal variation of fish assemblage associated with aquatic macrophyte patches in the littoral zone of the Ayapel Swamp Complex, Colombia - (2017)

Carlos Mario Marín Avendaño, Néstor Jaime Aguirre Ramírez

Volume: 29 - Issue: 0

Resumo. Abstract: Aim The purpose of the present study was to examine spatial and temporal variation in fish assemblage structure associated with aquatic macrophytes in the littoral zone of the ASC. Methods Specimens were caught between January 2008 and February 2009, over four limnimetric moments,...

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Species inventory of aquatic macrophytes in the last undammed stretch of the Upper Paraná River, Brazil - (2017)

Douglas Costa Souza, Eduardo Ribeiro Cunha, Raytha de Assis Murillo, Márcio José Silveira, Mikaela Marques Pulzatto, Mario Sérgio Dainez-Filho, Lucas Assumpção Lolis, Sidinei Magela Thomaz

Volume: 29 - Issue: 0

Resumo. Abstract The last undammed stretch of the Upper Paraná River in the Brazilian territory is, to date, not completely inventoried, which rises concerns given the rapid rates of species extinctions. Aim Here, we provide an inventory of macrophyte taxa recorded in the last undammed 230 km...

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Structure and dynamic of planktonic ciliate community in a large Neotropical river: the relevance of the pluviosity and tributaries in the biodiversity maintenance - (2017)

Orlando Pelissari Negreiros, Bianca Trevizan Segovia, Fernando Miranda Lansac-Tôha, Bianca Ramos de Meira, Paulo Roberto Bressan Buosi, Adalgisa Fernanda Cabral, Heloisa Santos Silva, Fábio Amodêo Lansac-Tôha, Luiz Felipe Machado Velho

Volume: 29 - Issue: 0

Resumo. Abstract Aim: We investigated the spatial and temporal patterns of abundance and diversity of planktonic ciliate community, in the last undammed stretch of the Upper Paraná River, Brazil. Methods In order to reach this result, seven field campaigns were performed over two years. Plankton...

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Temporal coherence of physical, chemical and biological variables in four tropical lakes (Minas Gerais, Brazil) - (2017)

Mariana Peifer Bezerra, Pedro Maia Barbosa, Francisco Antônio Rodrigues Barbosa, José Fernandes Bezerra Neto

Volume: 29 - Issue: 0

Resumo. Abstract Aim: The main objective of this study was to evaluate the presence of temporal coherence of limnological variables and pairs of lakes considering four tropical lakes of the Rio Doce State Park, using monthly data from the Long-Term Ecological Research Program (LTER) between the years of...

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Temporal distribution and early development of Moenkausia cf. gracilima (Lucena & Soares, 2016) (Osteichthyes, Characidae) in the upper Paraná River, Brazil - (2017)

Joyce Andreia dos Santos, Marcia Sayuri Iquematsu, Claudemir Martins Soares, Eliana Maria Galdioli, Klebert Faria da Silva, Valmir Alves Teixeira, Andréa Bialetzki

Volume: 29 - Issue: 0

Resumo. Abstract Aim: To analyze temporal distribution of larvae and juveniles and the early development and of Moenkhausia cf. gracilima. Methods Samples were taken quarterly in twenty-five sites in the upper Paraná River floodplain between August 2013 and May 2015. The samples were taken under...

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The small foreigner: new laws will promote the introduction of non-native zooplankton in Brazilian aquatic environments - (2017)

Paula Nunes Coelho, Raoul Henry

Volume: 29 - Issue: 0

Resumo. Abstract Non-native species of zooplankton have been introduced in Brazilian continental aquatic environments for a variety of reasons (e.g., non-native fish stocking, aquaculture), but many pathways of zooplankton introductions remain unknown. Recently, the governor of the State of Amazonas...

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Trophic quality of waters in the Patos Lagoon estuary: a comparison between its margins and the port channel located in Rio Grande, RS, Brazil - (2017)

Rafela Neves Marreto, Maria da Graça Zepka Baumgarten, Mônica Wallner-Kersanach

Volume: 29 - Issue: 0

Resumo. Abstract: Aim This study aimed to evaluate the Trophic State Index (TSI) at the margin and in the channel of the Patos Lagoon estuary, considering different hydrological conditions. Methods Surface and bottom water samples were collected in three sites in the channel (margin and center) and in...

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Distribution of Archaeal and Bacterial communities in a subtropical reservoir - (2015)

Laís Américo Soares, André Cordeiro Alves Dos Santos, Iolanda Cristina Silveira Duarte, Emiliana Manesco Romagnoli, Maria do Carmo Calijuri

Volume: 27 - Issue: 4

Resumo. Abstract Aim: Microbial communities play a central role in environmental process such as organic matter mineralization and the nutrient cycling process in aquatic ecosystems. Despite their ecological importance, variability of the structure of archaeal and bacterial communities in freshwater...

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Diversity and composition of Trichoptera (Insecta) larvae assemblages in streams with different environmental conditions at Serra da Bocaina, Southeastern Brazil - (2015)

Ana Lucia Henriques-Oliveira, Jorge Luiz Nessimian, Darcílio Fernandes Baptista

Volume: 27 - Issue: 4

Resumo. Abstract: Aim The goal of this study is to examine the composition and richness of caddisfly assemblages in streams at the Serra da Bocaina Mountains, Southeastern Brazil, and to identify the main environmental variables, affecting caddisfly assemblages at the streams with different conditions of...

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Geostatistical techniques applied to mapping limnological variables and quantify the uncertainty associated with estimates - (2015)

Cristiano Cigagna, Daniel Marcos Bonotto, José Ricardo Sturaro, Antonio Fernando Monteiro Camargo

Volume: 27 - Issue: 4

Resumo. Abstract Aim: This study aimed to map the concentrations of limnological variables in a reservoir employing semivariogram geostatistical techniques and Kriging estimates for unsampled locations, as well as the uncertainty calculation associated with the estimates. Methods: We established...

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Influence of water fluctuations on the limnological characteristics of two floodplain lagoons (Ribeira do Iguape Valley, state of São Paulo, Brazil) - (2015)

Rogério Herlon Furtado Freire, Roseli Frederigi Benassi, Maria do Carmo Calijuri, Aline Alves Sanchez

Volume: 27 - Issue: 4

Resumo. Abstract Aim: Current study assessed the influence of hydrometric levels on the limnological characteristics of two river floodplain systems in the Ribeira do Iguape Basin (state of São Paulo, Brazil). Methods: Rainfall data were collected dailyfrom an automatic weather station in...

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Macroinvertebrates of the Iranian running waters: a review - (2015)

Moslem Sharifinia

Volume: 27 - Issue: 4

Resumo. Abstract A comprehensive review of macroinvertebrate studies conducted along the Iranian running waters over the last 15 years has been made by providing the most updated checklist of the Iranian running waters benthic invertebrates. Running waters ecosystems are complex environments known for...

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Predation by Erythemis nymphs (Odonata) on Chironomidae (Diptera) and Elmidae (Coleoptera) in different conditions of habitat complexity - (2015)

João Ânderson Fulan, Marcelo Rodrigues dos Anjos

Volume: 27 - Issue: 4

Resumo. Abstract Aim: The goal of this study was to analyze the effects of predation by nymphs of Erythemis Hagen, 1861 on Elmidae and Chironomidae and to check if the presence and the architecture of aquatic macrophytes may mediate this interaction. Methods: All prey as well as nymphs were captured near...

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Spatial and temporal variation of phytoplankton in subtropical stabilization ponds - (2015)

Wiviany Riediger, Norma Catarina Bueno, Nyamien Yahaut Sebastien, Jascieli Carla Bortolini

Volume: 27 - Issue: 4

Resumo. Abstract Aim: This study aimed at analyzing the phytoplankton community in two stabilization ponds of a subtropical region regarding spatial and temporal composition, richness, and abundance, as well as the respective relationships with local abiotic factors. For this purpose, we tested the...

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Trichoptera (Insecta) in water hyacinth roots: evaluation of the influence of exotic mussel and environmental factors - (2015)

Sandra Francisca Marçal, Claudia Tasso Callil, Rogério Conceição Lima dos Santos

Volume: 27 - Issue: 4

Resumo. Abstract Aim: Information on the influence of mussel macrofouling in invertebrate communities usually have the initial assumption of negative interference. Methods We analyzed this relationship in a community of aquatic invertebrates associated to roots of Eichhornia crassipes in 15 shallow...

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Trophic structure of fish fauna along the longitudinal gradient of a first-order rural stream - (2015)

Jardel Nimet, Rosilene Luciana Delariva, Luciano Lazzarini Wolff, Jislaine Cristina da Silva

Volume: 27 - Issue: 4

Resumo. Abstract Aim: This study evaluated the trophic structure of the fish assemblage along the longitudinal gradient of a first-order rural stream. Methods Fish were sampled by electrofishing technique in December 2007, September 2008 and March 2009, at three stretch of the Itiz stream (headwater,...

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Water quality in four reservoirs of the metropolitan region of São Paulo, Brazil - (2015)

Denise Amazonas Pires, Andrea Tucci, Maria do Carmo Carvalho, Marta Condé Lamparelli

Volume: 27 - Issue: 4

Resumo. Abstract Aim: This paper describes some limnological variables of four reservoirs with different trophic status (Billings, Guarapiranga, Jundiaí and Paiva Castro) of the Metropolitan Region of São Paulo, Brazil, aiming to characterize the water quality in these reservoirs. Methods...

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Caloric content of leaves of five tree species from the riparian vegetation in a forest fragment from South Brazil - (2015)

Leandro Fabrício Fiori, Vivian de Mello Cionek, Patricia Almeida Sacramento, Evanilde Benedito

Volume: 27 - Issue: 3

Resumo. Abstract Aim: The measurement of the caloric content evidences the amount of energy that remains in the leaf and that can be released to the aquatic trophic chain. We assessed the energy content of leaves from five riparian tree species of a forest fragment in south Brazil and analyzed whether...

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Co-occurrence of Cylindrospermopsis raciborskii (Woloszynska) Seenaya & Subba Raju and Microcystis panniformis Komárek et al. in Mundaú reservoir, a semiarid Brazilian ecosystem - (2015)

Ariadne do Nascimento Moura, Maria do Carmo Bittencourt-Oliveira, Mathias Alii Chia, Juliana Santos Severiano

Volume: 27 - Issue: 3

Resumo. Abstract The influence of temperature and nutrients on the co-occurrence of Cylindrospermopsis raciborskii and Microcystis panniformis in Mundaú reservoir was investigated. Samples were collected bimonthly from September 2008 to March 2009 with a Van Dorn bottle at two depths (surface and...

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Daily mass balance of phosphorus and nitrogen in effluents of production sectors of trout farming system - (2015)

Munique de Almeida Bispo Moraes, Clovis Ferreira do Carmo, Carlos Massatoshi Ishikawa, Yara Aiko Tabata, Cacilda Thais Janson Mercante

Volume: 27 - Issue: 3

Resumo. Abstract Aim: The mass balance has recently been applied in Brazilian aquaculture. In relation to trout farming, few studies have used this methodology as environmental indicator, especially when considering each development stage of fish. The daily mass balance allows an estimate of nutrients...

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Ecological guilds of epiphytic diatoms (Bacillariophyta) on Acrostichum danaeifolium Längst. & Fisch in a subtropical wetland in southern Brazil - (2015)

Vanessa Corrêa da Rosa, Marinês Garcia

Volume: 27 - Issue: 3

Resumo. Abstract Aim: Seasonal patterns diatom community on Acrostichum danaeifolium were examined in a wetland in southern Brazil. Methods The adhered diatoms were removed from the plant, species identification and growth forms were performed, and determined physical-chemical parameters of water....

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Effects of nutrients increase on the copepod community of a reservoir using cages - (2015)

Vanessa Graciele Tibúrcio, Rodrigo Leite Arrieira, Leilane Talita Fatoreto Schwind, Claudia Costa Bonecker, Fábio Amodêo Lansac-Tôha

Volume: 27 - Issue: 3

Resumo. Abstract Aim: This study investigated changes in copepod abundance and the influence of environmental variables in a reservoir with fish farming using cages, on temporal and spatial scales. We hypothesised that the copepod abundance will increase when influenced by changes in environmental...

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Presence of riparian vegetation increases biotic condition of fish assemblages in two Brazilian reservoirs - (2015)

Fabio Cop Ferreira, Ursulla Pereira Souza, Miguel Petrere Junior2

Volume: 27 - Issue: 3

Resumo. Abstract The riparian vegetation in lakes and reservoirs is source of course wood structures such as trunks and branches and is used as sheltering, spawning and foraging habitats for fishes. The reduction of these submerged structures can thus, affect the composition and structure of fish...

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Relative influence of direct and indirect environmental effects on sestonic chlorophyll-a concentration in Cerrado streams - (2015)

Pedro Paulino Borges, Fabrício Barreto Teresa, Patrick Thomaz de Aquino Martins, João Carlos Nabout

Volume: 27 - Issue: 3

Resumo. Abstract Aim: Chlorophyll-a may be directly influenced by local variables and/or indirectly by land use and cover, once landscape modifications change limnological variables, which in turn affect the primary productivity of aquatic environments, e.g., streams. Therefore, the objective of this...

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Structure and biodiversity of zooplankton communities in freshwater habitats of a Vereda Wetland Region, Minas Gerais, Brazil - (2015)

Olívia Penatti Pinese, José Fernando Pinese, Kleber Del Claro

Volume: 27 - Issue: 3

Resumo. Abstract Aims: Vereda wetlands are among the most important aquatic habitats in Brazilian savannah (Cerrado) because of their association with river springs and its relevancy for biodiversity conservation. This study aimed to determine and compare the biodiversity of zooplankton in vereda lakes,...

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Wetland nutrient retention and multitemporal growth – Case study of Riacho Fundo’s Wetland - (2015)

Rodrigo Zolini Dias, Gustavo Macedo de Mello Baptista

Volume: 27 - Issue: 3

Resumo. Abstract Aim: The aim of this research was to evaluate the nutrient retention of Riacho Fundo’s wetland in controlling Lake Paranoá (Brasilia, Brazil) eutrophication analyzing its ability to retain nitrogen and phosphorus. Furthermore, the article aimed at verifying the multitemporal...

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Abiotic features of a river from the Upper Tietê River Basin (SP, Brazil) along an environmental gradient - (2015)

Katharina Eichbaum Esteves, Ana Valéria Pinto Lôbo, Alexandre Wagner Silva Hilsdorf

Volume: 27 - Issue: 2

Resumo. Aim: This study aimed to assess the spatial and seasonal variation of the water quality and physical habitat characteristics along the upper-middle stretch of the Paraitinga River, a tributary of Tietê River, considering the potential influence of different riparian conditions along the...

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An overview of the contribution of studies with cladocerans to environmental stress research - (2015)

Albert Luiz Suhett, Jayme Magalhães Santangelo, Reinaldo Luiz Bozelli, Christian Eugen Wilhem Steinberg, Vinicius Fortes Farjalla

Volume: 27 - Issue: 2

Resumo. Cladocerans are microcrustaceans component of the zooplankton in a wide array of aquatic ecosystems. These organisms, in particular the genus Daphnia, have been widely used model organisms in studies ranging from biomedical sciences to ecology. Here, we present an overview of the contribution of...

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Catalase activity in Smicridea McLachlan, 1871 (Insecta, Trichoptera) collected from natural and altered/impacted streams - (2015)

Cristiane Biasus, Luiz Ubiratan Hepp, Rogério Luis Cansian, Rozane Maria Restello, Albanin Aparecida Mielniczki-Pereira

Volume: 27 - Issue: 2

Resumo. Aim: We compare catalase activity in SmicrideaMcLachlan, 1871 (Insecta, Trichoptera) collected in natural and agricultural streams and correlates the enzyme pattern with metal content in the water.MethodsOrganisms were collected in sites classified as natural (riparian vegetation in buffer zone)...

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Editorial - (2015)

Antonio Fernando Monteiro Camargo

Volume: 27 - Issue: 2

Resumo.

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Effects of detritus chemical composition on the anaerobic mineralization of Salvinia auriculata and Utricularia breviscapa - (2015)

Marcela Bianchessi da Cunha Santino, Irineu Bianchini Júnior

Volume: 27 - Issue: 2

Resumo. Aim: This study was conducted to evaluate the effect of the detritus composition on the anaerobic mineralization of two species of aquatic macrophytes with different life forms (submerged and free floating). The hypothesis that guided this study was that the carbon concentration derived from...

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Evaluation of alternative macroinvertebrate sampling techniques for use in a new tropical freshwater bioassessment scheme - (2015)

Isabel Eleanor Moore, Kevin Joseph Murphy

Volume: 27 - Issue: 2

Resumo. Aim: The study aimed to determine the effectiveness of benthic macroinvertebrate dredge net sampling procedures as an alternative method to kick net sampling in tropical freshwater systems, specifically as an evaluation of sampling methods used in the Zambian Invertebrate Scoring System (ZISS)...

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Mercury bioaccumulation in fishes of a paddy field in Southern of Brazil - (2015)

Vinicius Tavares Kütter, Mateus Tavares Kütter, Emmanoel Vieira Silva-Filho, Eduardo Duarte Marques, Olga Venimar de Oliveira Gomes, Nicolai Mirlean

Volume: 27 - Issue: 2

Resumo. Aim: The aim of present study was to evaluate the Hg concentration in two species of fish (Astyanax sp and Corydoras paleatus) and its potential use as a biomonitor, in order to know if the use of pesticides and fertilizers in paddy can enhance the Hg contamination to adjacent aquatic...

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Prevalence of paralytic shellfish poison-producing Planktothrix agardhii and Cylindrospermopsis raciborskii in a Brazilian semi-arid reservoir - (2015)

Ismael Keslley Carloto Lopes, Mario Ubirajara Gonçalves Barros, Carlos João Pestana, José Capelo Neto

Volume: 27 - Issue: 2

Resumo. Aim: The present study aimed to investigate the composition and toxicity of the phytoplankton in Sítios Novos reservoir, used mainly as drinking water supply for approximately 30,000 people.MethodsSamples were collected between January 2010 and June 2011.ResultsDuring this period 19 taxa...

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Sediment composition mediates the invasibility of aquatic ecosystems by a non-native Poaceae species - (2015)

José Vitor Botter Fasoli, Thaisa Sala Michelan, Sidinei Magela Thomaz

Volume: 27 - Issue: 2

Resumo. Aim: To test the invasibility of aquatic ecosystems by an exotic species, we used the invasive macrophyte Urochloa arrecta, which has invaded many Neotropical waterbodies and has reduced biodiversity in these habitats. The extensive growth of this macrophyte can be related to its affinity for...

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Synergistic effects between omnivorous filter-feeding fish and nutrient enrichment on algal biomass - (2015)

Leonardo Henrique Teixeira, José Luiz Attayde

Volume: 27 - Issue: 2

Resumo. Aim: The Nile tilapia - Oreochromis niloticus(Linnaeus 1758) - is an exotic omnivorous filter-feeding fish that has been stocked for three decades in man-made lakes of Northeastern Brazil. Most experiments manipulating omnivorous filter-feeding fish in eutrophic lakes and reservoirs shows that...

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Water quality and potamoplankton evaluation of the Nile River in Upper Egypt - (2015)

Ahmed Mohamed El-Otify, Isaac Agaiby Iskaros

Volume: 27 - Issue: 2

Resumo. Aim: The composition, abundance, community structure of potamoplankton and major physical and chemical variables of the Nile water in Upper Egypt were investigated to assess its status in different seasons during 2007.MethodsWater samples were collected seasonally during 2007 from six...

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Biomonitoring ecological status of two reservoirs of the Brazilian semi-arid using phytoplankton assemblages (Q index) - (2015)

Ana Paula Cardoso Silva, Ivaneide Alves Soares da Costa

Volume: 27 - Issue: 1

Resumo. AimAssess whether the assembly index is a suitable tool for biomonitoring of aquatic ecosystems of semi-arid environment.MethodsMonthly, samples were collected between October 2011 and May 2012 in Santa Cruz do Apodi (5°43'59"S; 46" 00 119 "W) and Pau dos Ferros...

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Biotic or abiotic factors: which has greater influence in determining the structure of rotifers in semi-arid reservoirs? - (2015)

Daniele Jovem da Silva Azevêdo, José Etham de Lucena Barbosa, Danianne Enéias Porto, Wilma Izabelly Ananias Gomes, Joseline Molozzi

Volume: 27 - Issue: 1

Resumo. ObjectiveThe objective of this study is to evaluate whether the distribution of structural attributes of rotifers in reservoirs in the semiarid region is more strongly influenced by abiotic or biotic environmental factors (density of cyanobacteria).MethodSampling occurred in two reservoirs in the...

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Cyanobacterial occurrence and detection of microcystins and saxitoxins in reservoirs of the Brazilian semi-arid - (2015)

Jessica Roberts Fonseca, Pryscila Cynara Soares Vieira, Paula Kujbida, Ivaneide Alves Soares da Costa

Volume: 27 - Issue: 1

Resumo. Aim:The rapid spread of cyanobacteria in water sources and reservoirs has caused serious environmental damage and public health problems, and consists in a problem that challenges the institutions responsible for providing water to the population. In this study, the quantification of microcystin,...

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Editorial - (2015)

Joseline Molozzi, Antonio Fernando Monteiro Camargo

Volume: 27 - Issue: 1

Resumo.

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Implications of low food availability on resource partitioning among three species of Cichlidae (Pisces: Perciformes) in a Brazilian semi-arid reservoir - (2015)

Bruno Renaly Souza Figueiredo, Gabrielle Joanne Medeiros Araujo, Márcio Joaquim da Silva, Elvio Sergio Figueredo Medeiros

Volume: 27 - Issue: 1

Resumo. AimResource partitioning has been recognized as a major driver affecting fish communities, with the potential to reduce interespecific competition. This is the result of differences in feeding apparatuses and feeding mode, location of the fish species in the water column and swimming ability, as...

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Influence of ecological filters on phytoplankton communities in semi-arid solar saltern environments - (2015)

Raiane Santos Costa, Joseline Molozzi, Luiz Ubiratan Hepp, Diógenes Félix da Silva Costa, Paulo Roberto Nunes da Silva, Renato de Medeiros Rocha, José Etham de Lucena Barbosa

Volume: 27 - Issue: 1

Resumo. ObjectiveThis study analyzed the influence of ecological filters (abiotic variables) on the phytoplankton community in hypersaline ecosystems.MethodsThe abiotic variables measured herein were: pH, water temperature, salinity, ammonium ion, total nitrogen, nitrite, nitrate, total phosphorus, and...

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Influence of extended drought on water quality in tropical reservoirs in a semiarid region - (2015)

Gustavo Girão Braga, Vanessa Becker, José Neuciano Pinheiro de Oliveira, Jurandir Rodrigues de Mendonça Junior, Anderson Felipe de Medeiros Bezerra, Laíssa Macêdo Torres, Ângela Marília Freitas Galvão, Arthur Mattos

Volume: 27 - Issue: 1

Resumo. AimDrought periods often occur in Brazilian semiarid region and are supposed to induce water quality degradation by changes in physical, chemical and biological properties of freshwater ecosystems. Reservoirs in this region are used as drinking-water supplies and are exposed to wide volume...

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Limnological characteristics of a hydrographic basin of the Brazilian semiarid region - (2015)

Rodrigo Sávio Teixeira de Moura, Gustavo Gonzaga Henry-Silva

Volume: 27 - Issue: 1

Resumo. AimThis study aimed to verify if the water characteristics of Apodi/Mossoró River basin aquatic environments are mainly determined by a longitudinal gradient or its rain regime.MethodsThrough one year quarterly sample expeditions were carried (August/2007 to May/2008), in 24 sampling...

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On the relation amongst limnological factors and fish abundance in reservoirs at semiarid region - (2015)

Ronaldo César Gurgel-Lourenço, Carlos Alberto de Sousa Rodrigues-Filho, Ronaldo Angelini, Danielle Sequeira Garcez, Jorge Iván Sánchez-Botero

Volume: 27 - Issue: 1

Resumo. Aim:To evaluate possible nycthemeral and seasonal temporal patterns in fish assemblage associated with limnological aspects and biotic factors in two reservoirs in semarid Northeastern Brazil.MethodsFish were sampled with gillnets in nycthemeral cycles throughout the dry and rainy season in two...

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Spatial modeling of limnological parameters in a solar saltwork of northeastern Brazil - (2015)

Diógenes Félix da Silva Costa, José Etham de Lucena Barbosa, Amadeu Mortágua Velho de Maia Soares, Ana Isabel Lillebø, Renato de Medeiros Rocha

Volume: 27 - Issue: 1

Resumo. AimIn this research, we aimed to model limnological parameters in the Salina Unidos (Macau-Brazil) using GIS technology. We hypothesized that in solar saltworks, the geochemical characteristics of the brines (i.e. the strong solution of salts) vary considerably through the salt ponds circuit, in...

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Vertical and temporal dynamics of phytoplanktonic associations and the application of index assembly in tropical semi-arid eutrophic reservoir, northeastern Brazil - (2015)

Pryscila Cynara Soares Vieira, Maria Marcolina Lima Cardoso, Ivaneide Alves Soares da Costa

Volume: 27 - Issue: 1

Resumo. AimTo determine the composition and biomass of functional groups around the vertical and temporal gradient correlated with environmental conditions and apply the index Q in a water-supply reservoir.MethodsWater samples were collected monthly (n = 92) between 2009 and 2011 in two points of the dam...

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Zooplankton community of Parnaíba River, Northeastern Brazil - (2015)

Ludmilla Cavalcanti Antunes Lucena, Thaís Xavier de Melo, Elvio Sergio Figueredo Medeiros

Volume: 27 - Issue: 1

Resumo. Aim:The objective of the present work is to present a list of species of zooplankton (Rotifera, Cladocera and Copepoda) from the Parnaíba River. Additionally, we provide comments on their distribution along the river, and between dry and wet seasons.MethodsZooplankton was collected with a...

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Assessment of the physicochemical variables of a subtropical reservoir in the northwest of Argentina - (2014)

Beatriz Concepción Tracanna, Silvia Nelly Martínez De Marco, María de los Ángeles Taboada, Virginia Mirande, María de Lourdes Gultemirian, Sara Celina Isasmendi

Volume: 26 - Issue: 4

Resumo. AIM: The Escaba dam is located in the south of the Tucumán province, Argentina, at 650 m above sea level. It has an extension of 541 ha. and a depth of 65 m and its tributaries are the Chavarría, Las Moras, El Chorro and Singuil rivers. The climate is mild with dry winters and rainy...

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Diel dynamic of phytoplankton functional groups in a tropical water supply, Extremoz Lake, northeastern Brazil - (2014)

Thársia da Silva Pinto, Vanessa Becker

Volume: 26 - Issue: 4

Resumo. AIM: This study analyzed - the diel and vertical dynamics of phytoplankton functional groups in a natural tropical lake (Extremoz Lake, northeast Brazil), to investigate and understand the driver factors of the community during a severe drought period. METHODS: Sampling of the abiotic variables...

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Differential environmental impacts on small and medium size rivers from center of São Paulo State, Brazil, and regional management perspectives - (2014)

Paula Caroline dos Reis Oliveira, Marcos Gomes Nogueira, Luciana Pinto Sartori

Volume: 26 - Issue: 4

Resumo. AIM: This study aimed to evaluate, comparatively, the influence of distinct environmental impacts in the watershed on the rivers Capivara, Lavapés, Araquá and Pardo and the transference of effects downstream. METHODS: The limnological/water quality study was carried out in rainy...

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Effects of impoundment on the body condition of fish in the Manso reservoir, Mato Grosso State, Brazil - (2014)

Sandra Maria Lopes de Moura, Elaine Antoniassi Luiz Kashiwaqui, Norma Segatti Hahn

Volume: 26 - Issue: 4

Resumo. AIM: This study evaluated the body condition de Acestrorhynchus pantaneiro, Auchenipterus osteomystax, Pimelodus maculatus, Psectrogaster curviventris and Schizodon borellii in the Manso reservoir, Mato Grosso State, Brazil, during the first years after its formation (years I, II, III and IV). We...

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Epilithic diatoms in headwater areas of the hydrographical sub-basin of the Andreas Stream, RS, Brazil, and their relation with eutrophication processes - (2014)

Carla Giselda Heinrich, Valéria Louzada Leal, Marilia Schuch Adriana Düpont, Eduardo Alcayaga Lobo

Volume: 26 - Issue: 4

Resumo. AIM: This research aimed to study the composition of epilithic diatom flora in headwater areas of the sub-basin of the Andreas stream, RS, Brazil, and their relation with eutrophication processes. METHODS: Quarterly excursions (March, June, September, December 2012 and Mach 2013) were performed...

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Estimating nitrogen and phosphorus saturation point for Eichhornia crassipes (Mart.) Solms and Salvinia molesta Mitchell in mesocosms used to treating aquaculture effluent - (2014)

Matheus Nicolino Peixoto Henares, Antonio Fernando Monteiro Camargo

Volume: 26 - Issue: 4

Resumo. AIM: To evaluate the growth of Eichhornia crassipes (Mart.) Solms and Salvinia molesta Mitchell in tanks used for treating aquaculture effluent and compare the results with literature data in order to estimate the nutrients saturation point. METHODS: An experiment with six rectangular fiberglass...

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Limnological characterisation and phytoplankton seasonal variation in a subtropical shallow lake (Guaiba Lake, Brazil): a long-term study - (2014)

Rodrigo da Rocha Andrade, Danilo Giroldo

Volume: 26 - Issue: 4

Resumo. AIM: to provide a long-term limnological characterisation of a subtropical shallow lake in addition to verifying seasonal differences, including phytoplankton variation. METHODS: monthly sampling at sites IP, SJ and MD from 2000 to 2009 to analyse temperature - T; depth - Z; the depth of the...

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Taxonomical and ecological characteristics of the desmids placoderms in reservoir: analyzing the spatial and temporal distribution - (2014)

Sirlene Aparecida Felisberto, Liliana Rodrigues, Helivânia Sardinha dos Santos

Volume: 26 - Issue: 4

Resumo. AIM: This study aimed to evaluate the influence of river-dam axis and abiotic factors on the composition of Closteriaceae, Gonatozygaceae, Mesotaeniaceae and Peniaceae in a tropical reservoir METHODS: Water samples for physical, chemical and periphyton analysis were collected in April and August...

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Tilapia rendalli increases phytoplankton biomass of a shallow tropical lake - (2014)

Lúcia Helena Sampaio da Silva, Marlene Sofia Arcifa, Gian Salazar-Torres, Vera Lúcia de Moraes Huszar

Volume: 26 - Issue: 4

Resumo. AIM: This study aimed to experimentally test the influence of a planktivorous filter-feeding fish (Tilapia rendalli) on the phytoplankton dynamics of a small and shallow tropical reservoir (Lake Monte Alegre, Brazil). Adults of T. rendalli of this lake feed preferentially on phytoplankton, and we...

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Trophic ecology of two piranha species, Pygocentrus nattereri and Serrasalmus marginatus (Characiformes, Characidae), in the floodplain of the Negro River, Pantanal - (2014)

Fabiane Silva Ferreira, Wagner Vicentin, Fábio Edir dos Santos Costa, Yzel Rondon Súarez

Volume: 26 - Issue: 4

Resumo. AIM: This study aimed to evaluate influence of hydrological variation, ontogeny and interspecific variation in the feeding activity and diet composition for P. nattereri and S. marginatus in floodplain of Negro River, South Pantanal. METHODS: The samples were taken with the use of gillnets and...

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A global scientific literature of research on water quality indices: trends, biases and future directions - (2014)

Maria Tereza Ribeiro Alves, Fabrício Barreto Teresa, João Carlos Nabout

Volume: 26 - Issue: 3

Resumo. AIM: Water quality has been the subject of many recent studies, moreover, the physical, chemical and biological parameters of water are used to investigate water quality and can be combined into a single index, the Water Quality Index (WQI), for use by water resource managers and the general...

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Chemical change of leaves during breakdown affects associated invertebrates in a subtropical stream - (2014)

Alan Mosele Tonin, Rozane Maria Restello, Luiz Ubiratan Hepp

Volume: 26 - Issue: 3

Resumo. AIMS: Our objective was assess the effects of leaf chemical change during breakdown on the associated invertebrates. METHODS: We evaluate the chemical composition of leaves (of two tree species; Sebastiania brasiliensis and Campomanesia xanthocarpa) and the density of invertebrates during leaf...

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Composition and species richness phytoplankton in a subtropical floodplain lake: a long-term study - (2014)

Jascieli Carla Bortolini, Vânia Mara Bovo-Scomparin, Aline Caroline Magro de Paula, Geovani Arnhold Moresco, Larissa Mozini Reis, Susicley Jati, Luzia Cleide Rodrigues

Volume: 26 - Issue: 3

Resumo. AIM: Phytoplankton species diversity in floodplain lakes is influenced by different conditions imposed by the hydrosedimentological regime of the main channel. This study evaluated the predictors of composition and species richness phytoplankton in the long-term scale, in a floodplain lake...

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Determining the high variability of pCO2 and pO2 in the littoral zone of a subtropical coastal lake - (2014)

Denise Tonetta, Maria Luiza Schmitz Fontes, Mauricio Mello Petrucio

Volume: 26 - Issue: 3

Resumo. The aquatic metabolism comprises production and mineralization of organic matter through biological processes, such as primary production and respiration that can be estimated by gases concentration in the water column. AIM: The study aimed to assess the temporal variability of pCO2 and pO2 in...

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Diel patterns of temperature, conductivity and dissolved oxygen in an Amazon floodplain lake: description of a friagem phenomenon - (2014)

Pedro Caraballo, Bruce Rider Forsberg, Fabiane Ferreira de Almeida, Rosseval Galdino Leite

Volume: 26 - Issue: 3

Resumo. AIM: The aim of this work was to study the diel stratification parameters temperature, dissolved oxygen and conductivity, providing a more detailed description of a friagem event. METHODS: the mixing behavior of the limnetic water column in Lago Catalão, an Amazon floodplain lake flooded...

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Environmental integrity and damselfly species composition in Amazonian streams at the "arc of deforestation" region, Mato Grosso, Brazil - (2014)

Leandro Schlemmer Brasil, Joana Darc Batista, Nubia França da Silva Giehl, Marco Bruno Xavier Valadão, Josias Oliveira dos Santos, Karina Dias-Silva

Volume: 26 - Issue: 3

Resumo. AIMS: Investigated how the loss of environmental integrity affects damselfly species composition in nine sites with different levels of environmental integrity in a Cerrado-Amazon transition region known as "arc of deforestation" in Mato Grosso State, Brazil. We also tested the...

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Short-term physiological responses to copper stress in Salvinia auriculata Aubl. - (2014)

Andresa Lana Thomé Bizzo, Aline Chaves Intorne, Pollyana Honório Gomes, Marina Satika Suzuki, Bruno dos Santos Esteves

Volume: 26 - Issue: 3

Resumo. AIM: To evaluate, in a short-time exposure, the physiological responses of Salvinia auriculata Aubl. under different concentrations of Cu. METHODS: The plants were exposed to treatments with 0.01, 0.1, 1 and 10 mM of Cu in a period of 2 days. Then development variables of S. auriculata (weight,...

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Spatial and temporal heterogeneity in a subtropical reservoir and their effects over the benthic macroinvertebrate community - (2014)

Frederico Guilherme de Souza Beghelli, André Cordeiro Alves dos Santos, Maria Virgínia Urso-Guimarães, Maria do Carmo Calijuri

Volume: 26 - Issue: 3

Resumo. AIM: The objective of the present study was to demonstrate the influences of the environment spatial heterogeneity on benthic macroinvertebrates considering transverse and longitudinal gradients as also seasonality. METHODS: Four samplings were performed: two in the wet and two in the dry season...

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Structure and composition of the benthic macroinvertebrate community on wetland and irrigated rice cultivation - (2014)

Karen Tavares Juruá, Isadora Adamoli Pagel, Vitor Emanuel Tavares, Lilian Terezinha Winckler Sosinski

Volume: 26 - Issue: 3

Resumo. Wetlands are environmentally and economically important ecosystems. The irrigated rice crops are considered artificial wetlands, because they offer food and refuge to different aquatic communities. The benthic macroinvertebrates are used to study environmental quality. The knowledge from the...

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The influence of rain in limnological characteristics of Viruá wetlands, Brazilian Amazon - (2014)

Julio Daniel do Vale, Jansen Zuanon, William Ernest Magnusson

Volume: 26 - Issue: 3

Resumo. AIM: Floodplains occupy a vast area of the Amazon basin but little is known of how their physical and limnological characteristics respond to local and regional ecological processes. In the Negro River basin and its main tributary, the Branco River, there are large areas that are seasonally...

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Aquatic macrophyte community varies in urban reservoirs with different degrees of eutrophication - (2014)

Suelen Cristina Alves da Silva, Armando Carlos Cervi, Cleusa Bona, André Andrian Padial

Volume: 26 - Issue: 2

Resumo. AIM: Investigate spatial and temporal variation in the aquatic macrophyte community in four urban reservoirs located in Curitiba metropolitan region, Brazil. We tested the hypothesis that aquatic macrophyte community differ among reservoirs with different degrees of eutrophication. METHODS: The...

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Composition and diversity of the Chironomidae in subtropical streams: effects of environmental predictors and temporal analysis - (2014)

Rozane Maria Restello, Cristiane Biasi, Pedro Felipe Moutinho Bernardo de Moraes, Gabriella Gabriel, Luiz Ubiratan Hepp

Volume: 26 - Issue: 2

Resumo. AIMS: The aims of this study were (i) to evaluate the spatial and temporal distribution of chironomids in subtropical streams and (ii) to investigate the importance of environmental predictors in the distribution of this group. METHODS: Samples were collected in four annual seasons between 2010...

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Diversity and ecological aspects of aquatic insect communities from montane streams in southern Brazil - (2014)

Bruna Marmitt Braun, Mateus Marques Pires, Carla Bender Kotzian, Marcia Regina Spies

Volume: 26 - Issue: 2

Resumo. AIMS: In this study, the diversity of Ephemeroptera, Plecoptera, Trichoptera and Coleoptera communities was surveyed in the Toropi River basin, a watershed localized in a slope region, in southernmost Brazil. The influence of some local abiotic factors on the most common genera was also analyzed....

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Editorial - (2014)

Luiz Ubiratan Hepp, Antonio Camargo

Volume: 26 - Issue: 2

Resumo.

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Effect of habitat heterogeneity in the composition and distribution of Chironomidae (Diptera) assemblage in different microhabitats of preserved streams in the Brazilian Atlantic Forest - (2014)

Fernanda de Almeida Gurski, Gisele Daiane Pinha, Yara Moretto, Alice Michiyo Takeda, Norma Catarina Bueno

Volume: 26 - Issue: 2

Resumo. AIM: This study aimed at to evaluate the influence of habitat heterogeneity on the attributes of richness, abundance, diversity and equitability of Chironomidae assemblage and also the biological differences in faunistic composition related to each microhabitat. METHODS: The sampling was...

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Field evidence of the influence of aquatic macrophytes on water quality in a shallow eutrophic lake over a 13-year period - (2014)

Edélti Faria Albertoni, Cleber Palma-Silva, Claudio Rossano Trindade Trindade, Leonardo Marques Furlanetto

Volume: 26 - Issue: 2

Resumo. AIM: The main objective of this work is to describe the changes in water characteristics of a shallow subtropical lake, in periods with and without growing of macrophytes, related to periods of clear-macrophyte dominance and turbid-phytoplankton dominance states. METHODS: The study was conducted...

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Morphological characterization of eighteen lakes of the north and middle coast of Rio Grande do Sul, Brazil - (2014)

Alois Eduard Schäfer, Cassiano Alves Marchett, Sabrina Maurer Schuh, Siclério Ahlert, Rosane Maria Lanzer

Volume: 26 - Issue: 2

Resumo. AIMS: The present study aimed at a morphological characterization of 18 lakes of the municipalities of Cidreira, Balneário Pinhal and Palmares do Sul, situated in the northern and middle coastal plain of Rio Grande do Sul, Brazil. METHODS: The morphometric survey was conducted in the...

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Population dynamics of Aegla manuinflata Bond-Buckup and Santos 2009 (Decapoda: Aeglidae), an threatened species - (2014)

André Trevisan, Sandro Santos

Volume: 26 - Issue: 2

Resumo. AIM: We evaluate the population density, median size of males and females, age distribution, sex-ratio, reproductive period and recruitment period of the threatened species Aegla manuinflata. METHODS: Monthly samplings were made from May 2006 to April 2007 in the Passo Taquara stream, Brazil. An...

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The effect of the macroconsumer Aegla longirostri (Crustacea, Decapoda) on the invertebrate community in a subtropical stream - (2014)

Gláucia Bolzan Cogo, Cristiane Biasi, Sandro Santos

Volume: 26 - Issue: 2

Resumo. AIM: This study tested whether the macroconsumer Aegla longirostri is able to modify the invertebrate community associated with decomposing leaves. METHODS: The study was performed in a first-order stream located in central Rio Grande do Sul state. Two types of channels containing leaf litter of...

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The influence of environmental variables on spatial and temporal phytoplankton dissimilarity in a large shallow subtropical lake (Lake Mangueira, southern Brazil) - (2014)

Luciane Oliveira Crossetti, Fabiana Schneck, Lacina Maria Freitas-Teixeira, David da Motta-Marques

Volume: 26 - Issue: 2

Resumo. AIM: The uneven distribution of organisms in aquatic ecosystems is generally attributed to environmental heterogeneity in both space and time, reflecting the occurrence of appropriate environmental conditions and the availability of resources to biological communities. The aim of this study was...

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Tolerance of benthic macroinvertebrates to organic enrichment in highland streams of northeastern Rio Grande do Sul, Brazil - (2014)

Aline Correa Mazzoni, Rosane Lanzer, Alois Schafer

Volume: 26 - Issue: 2

Resumo. AIM: the aim of this study was to determine the ecological valence of benthic macroinvertebrates at different pollution levels in highland rivers and streams of Rio Grande do Sul; METHODS: the dataset proceeds from samplings performed between 2002-2011 in 35 lotic ecosystems. The Chemical Index...

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A comparative study of the acute toxicity of the herbicide atrazine to cladocerans Daphnia magna, Ceriodaphnia silvestrii and Macrothrix flabelligera - (2014)

Raquel Aparecida Moreira, Adrislaine da Silva Mansano, Lidiane Cristina da Silva, Odete Rocha

Volume: 26 - Issue: 1

Resumo. AIM: In this study we compared the sensitivity of three species of Cladocera, Daphnia magna, Ceriodaphnia silvestrii and Macrothrix flabelligera, to the commercial product of the herbicide Atrazine, the Atrazine Atanor 50 SC® (500 g/L), widely used on crops in Brazil. METHODS: Acute toxicity...

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Benthic macrofauna and the limnological parameters of a first-order stream in Atlantic Forest of Brazilian Northeast - (2014)

Janaina Câmara Siqueira da Cunha, Renato Galindo de Barros Filho, Rafael Pereira da Silva, Iris Gabrielly Arruda dos Santos, Gilberto Gonçalves Rodrigues

Volume: 26 - Issue: 1

Resumo. AIM: The present study aimed to elucidate if the water physical and chemical parameters from a first order stream of Biological Reserve of Saltinho from south Pernambuco induces in the distribution and abundance of benthic macroinvertebrates. METHODS: Both limnological parameters (pH-value,...

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Bullfrog (Lithobates catesbeianus) farming system: water quality and environmental changes - (2014)

Cacilda Thais Janson Mercante, André Martins Vaz-dos-Santos, Munique de Almeida Bispo Moraes, Jeniffer Sati Pereira, Júlio Vicente Lombardi

Volume: 26 - Issue: 1

Resumo. INTRODUCTION: Frog farming, if not well managed, may cause environmental damages. The use of antibiotics, the organic discharge and the introduction of exotic species can disseminate risks such as eutrophication, changes in the water quality and organic pollution, factors that affect the human...

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Editorial - (2014)

Antonio Fernando Monteiro Camargo

Volume: 26 - Issue: 1

Resumo.

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Effects of human activities on rivers located in protected areas of the Atlantic Forest - (2014)

Mônica Luisa Kuhlmann, Hélio Rubens Victorino Imbimbo, Lucy Lina Ogura, João Paulo Villani, Roberto Starzynski, Maria de Jesus Robim

Volume: 26 - Issue: 1

Resumo. AIM: This study evaluated the impacts of anthropogenic activities upstream of conservation areas on the Paraibuna river and its implications for freshwater biodiversity. METHODS: The study was carried out in two units, Cunha and Santa Virginia, of the Serra do Mar State Park (SP), located in the...

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Environmental gradient in reservoirs of the medium and low Tietê River: limnological differences through the habitat sequence - (2014)

Welber Senteio Smith, Evaldo Luis Gaeta Espíndola, Odete Rocha

Volume: 26 - Issue: 1

Resumo. AIM: The reservoirs of the medium and low Tietê River are disposed as a "cascade series", in which time, physiographic features and influence from drainage basins present differences that determine variability in their dynamics. These reservoirs are submitted to different impacts...

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Evaluation of water and sediment quality of urban streams in Santa Cruz do Sul County, RS, Brasil, using ecotoxicological assays - (2014)

Luã de Vargas, Camila Athanásio, Adriana Düpont, Adilson Ben da Costa, Eduardo Aléxis Lobo

Volume: 26 - Issue: 1

Resumo. AIM: This study aimed to assess the quality of water and sediment of urban streams (Lajeado, Preto, Pedras and Lewis-Pedroso) located in Santa Cruz do Sul County, RS, Brazil, using the microcrustacean Ceriodaphnia dubia as test-organism. METHODS: Quarterly scientific excursions to the streams...

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Kinetics of aerobic decomposition in the leaching phase of allochthonous plant detritus - (2014)

André Luiz dos Santos Fonseca, Irineu Bianchini Jr., Cristiane Marques Monteiro Pimenta, Norberto Mangiavacchi, Cássio Botelho Pereira Soares

Volume: 26 - Issue: 1

Resumo. AIMS: This study aimed to evaluate, through an experiment with short sampling intervals, (1) the effects of detritus quality on dissolved oxygen (DO) consumption, on dissolved inorganic carbon (DIC) formation and on the stoichiometric ratio between the DO consumed and mineralized carbon (O/C...

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Limnological characteristics of a reservoir in semiarid Northeastern Brazil subject to intensive tilapia farming (Orechromis niloticus Linnaeus, 1758) - (2014)

Luis Artur Valões Bezerra, Walt Disney Paulino, Danielle Sequeira Garcez, Helena Becker, Jorge Iván Sánchez-Botero

Volume: 26 - Issue: 1

Resumo. AIM: There is currently no consensus regarding the physical and chemical variability of tropical reservoirs. In semiarid Northeastern Brazil, reservoirs are among other things used for human consumption, industrial water supply and intensive fish farming, all of which can impact water quality....

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Phytoplankton functional and morphological groups as indicators of environmental variability in a lateral channel of the Upper Paraná River floodplain - (2014)

Jascieli Carla Bortolini, Luzia Cleide Rodrigues, Susicley Jati, Sueli Train

Volume: 26 - Issue: 1

Resumo. AIM: Models of phytoplankton functional classification based on functional (FGs) and morphological (MBFGs) traits can be an important tool in aquatic monitoring. In this long-term study on phytoplankton, the goal was to use these two approaches to explain the changes in this community in an...

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Taxonomic composition and feeding habits of Chironomidae in Cerrado streams (Southeast Brazil): impacts of land use changes - (2014)

Victor Satoru Saito, Alaíde Aparecida Fonseca-Gessner

Volume: 26 - Issue: 1

Resumo. The Chironomidae family is the most abundant and diverse member of the benthic community in streams, yet their identification is still neglected in many papers. It is considered a family tolerant to environmental impacts and with homogeneous feeding habit. AIM: To compare the richness, abundance...

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Comparing the performance of different stream classification systems using aquatic macroinvertebrates - (2013)

Márlon de Castro Vasconcelos, Adriano Sanches Melo, Albano Schwarzbold

Volume: 25 - Issue: 4

Resumo. AIM: We evaluated five stream classification systems observing: 1) differences in richness, abundance and macroinvertebrates communities among stream classes within classification systems; and 2) whether classification systems present better performance using macroinvertebrates. Additionally, we...

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Conservation unit and water quality: the influence of environmental integrity on benthic macroinvertebrate assemblages - (2013)

Jessé Renan Scapini Sobczak, Alice Teresa Valduga, Rozane Maria Restello, Rafael Imlau Cardoso

Volume: 25 - Issue: 4

Resumo. AIM: This study aimed to determine the effectiveness of a Conservation Unit (CU) in maintaining the quality of freshwater habitats and to evaluate the influence of environmental integrity on benthic macroinvertebrate assemblages. METHODS: The research was conducted at sampling sites located...

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Diel responses of phytoplankton of an Amazon floodplain lake at the two main hydrological phases - (2013)

Kathrin Nere Passarinho, Maria Rosélia Marques Lopes, Sueli Train

Volume: 25 - Issue: 4

Resumo. AIM: This study examines the short-term changes of phytoplankton in an oxbow lake on the floodplain of the Acre River, Amazonia, Brazil. METHODS: Samples were taken with a Van Dorn bottle, at three depths (surface, middle and bottom), in two periods (low waters and high waters), for seven...

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Diversity and spatial and temporal variation of benthic macroinvertebrates with respect to the trophic state of Lake Figueira in the South of Brazil - (2013)

Fernanda Blauth de Lima, Alois Edward Schäfer, Rosane Maria Lanzer

Volume: 25 - Issue: 4

Resumo. Benthic macroinvertebrates are widely used in evaluations of environmental impact and recommended in biomonitoring, but little used in Brazilian lentic environments. One of the main objectives has been to explain and predict the distribution of those species according to environmental...

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Editorial - (2013)

Antonio Fernando Monteiro Camargo

Volume: 25 - Issue: 4

Resumo.

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Influence of local and landscape characteristics on the distribution and diversity of fish assemblages of streams in the Ivinhema River basin, Upper Paraná River - (2013)

Ana Paula Lemke, Yzel Rondon Súarez

Volume: 25 - Issue: 4

Resumo. OBJECTIVES: Among the most relevant issues in community ecology is the influence of different ways of addressing the pattern of diversity and distribution of species, and based on this, the present study sought to evaluate the influence of landscape and local characteristics on the richness and...

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Life-history strategies associated to reproduction of three Hyphessobrycon species (Characidae) in lentic environments of upper Paraná River basin - (2013)

Cristina da Silva Gonçalves, Ursulla Pereira Souza, Fabio Cop Ferreira, Alexandre Peressin, Francisco Manoel de Souza Braga

Volume: 25 - Issue: 4

Resumo. AIM: Life-history strategies in fish include essential parameters related to offspring survivorship, fecundity and time of reproduction, which represent adaptive traits that enable a species to deal with spatial and temporal variability of abiotic conditions. This study aimed to compare...

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Spatial and temporal patterns of macroinvertebrates in drift and on substrate of a mountain stream (Cordoba, Central Argentina) - (2013)

María Daniela Barbero, Ana María Oberto, Cristina Mabel Gualdoni

Volume: 25 - Issue: 4

Resumo. AIMS: The aims of this study are to evaluate the effects of spatial and temporal variability of the macroinvertebrate fauna in drift and in the substrate of a mountain stream. METHODS: The study site is located in Achiras stream (Central, Argentina). This is an endorheic fluvial course whose...

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Structure of benthic macroinvertebrate assemblages on a gradient of environmental integrity in Neotropical streams - (2013)

Marcia Thais Suriano, Alaide Aparecida Fonseca-Gessner

Volume: 25 - Issue: 4

Resumo. AIM: This study investigated the taxonomic composition of the benthic macroinvertebrates in streams to evaluate how this fauna reflects the various uses of the soil and to identify which groups of macroinvertebrates might be taken as characterizing each situation under study. METHODS: To achieve...

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Temporal and spatial variation of limnological variables and biomass of different macrophyte species in a Neotropical reservoir (São Paulo - Brazil) - (2013)

Flávia Bottino, Maria do Carmo Calijuri, Kevin Joseph Murphy

Volume: 25 - Issue: 4

Resumo. AIM: This study reports an investigation of limnological characteristics and aquatic macrophyte occurrence in a neotropical reservoir in order to assess the spatio-temporal variation of water and sediment variables and their influence on plant distribution. METHODS: Macrophytes, water and...

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Editorial - (2013)

Vinicius Fortes Farjalla, Antonio Fernando Monteiro Camargo

Volume: 25 - Issue: 3

Resumo.

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Diversity and biomass of native macrophytes are negatively related to dominance of an invasive Poaceae in Brazilian sub-tropical streams - (2013)

Luiz Felipe Gonçalves Fernandes, Mariana Carolina Teixeira, Sidinei Magela Thomaz

Volume: 25 - Issue: 2

Resumo. Besides exacerbated exploitation, pollution, flow alteration and habitats degradation, freshwater biodiversity is also threatened by biological invasions. This paper addresses how native aquatic macrophyte communities are affected by the non-native species Urochloa arrecta, a current successful...

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Effects of experimental eutrophization on zooplankton community - (2013)

Ana Maria Alves de Medeiros, Cyntya Eustáquio de Sousa, Maria Cristina Crispim, Ana Karla Araújo Montenegro

Volume: 25 - Issue: 2

Resumo. AIMS: The present study evaluated the role that increased nutrient concentrations play on zooplankton community, by employing an experimental laboratory approach. METHODS: Experiments were conducted in the laboratory, where three trophic state conditions were simulated, namely, mesotrophic,...

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Evaluation of sediment contamination by trace elements and the zooplankton community analysis in area affected by gold exploration in Southeast (SE) of the Iron Quadrangle, Alto Rio Doce, (MG) Brazil - (2013)

Cláudia de Lima e Silva, Adivane Terezinha da Costa, Giovanni Guimarães Landa, Herton Fabrício Camargos Fonseca, Aléssio Silveira

Volume: 25 - Issue: 2

Resumo. AIM: The aim was to verify the geochemical composition of sediments samples (riverbed and bank) and the relationship of the following elements: Al, As, Cd. Cr, Cu, Fe, Mn, Ni and Zn with the zooplankton community. METHODS: Bank and riverbed sediments were collected in four sampling points along...

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Factors structuring the spatial distribution of Chironomidae larvae community in the floodplain of the northern Pantanal, Brazil - (2013)

Maitê Tambelini dos Santos, Claudia Tasso Callil, Ibraim Fantin-Cruz, Pierre Girard

Volume: 25 - Issue: 2

Resumo. AIM: In order to identify the factors structuring the spatial distribution of the Chironomidae community, we analyzed the effects of water and sediment characteristics, flood duration and type of phytophysiognomic unit on the taxa composition of this community. MÉTODOS: O estudo foi...

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Hydrosedimentological disequilibrium in a small, urbanized watershed - (2013)

Alexandre Marco da Silva, Alexandre Ribas dos Santos, Rodolpho Augusto Fernandes, Rodrigo Custódio Urban, Romulo Martins Carvalho, Luiz Augusto Manfré, Steven Frederick Durrant

Volume: 25 - Issue: 2

Resumo. AIM: In this paper we estimate the sediment yield and other related information for a small urbanized watershed, located in Sorocaba, São Paulo State. The driving forces that produce the observed scenario are presented and discussed; METHODS: Over a year, water samples and hydrologic...

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Nitrogen and phosphorus resorption efficiency, and N : P ratios in natural populations of Typha domingensis Pers. in a coastal tropical lagoon - (2013)

Bruno dos Santos Esteves, Marina Satika Suzuki

Volume: 25 - Issue: 2

Resumo. AIM: We studied nitrogen (N) and phosphorus (P) resorption patterns in Typha domingensis Pers. in a tropical coastal lagoon during different seasons of throughout one year. METHODS: Resorption of N and P is uttered as resorption efficiency (NRE and PRE, respectively), which may be used as an...

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Nutrients and water-forest interactions in an Amazon floodplain lake: an ecological approach - (2013)

Fabio Aprile, Assad José Darwich

Volume: 25 - Issue: 2

Resumo. AIM: Catalão Lake was surveyed between 2002 and 2011 with the aim of studying seasonality of the flow of nutrients between water, sediment and aquatic macrophytes. The role of the flood pulse and the ecological mechanisms influencing the forest-water interactions in the Amazon floodplain...

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Organic matter cycling in a neotropical reservoir: effects of temperature and experimental conditions - (2013)

Flávia Bottino, Maria do Carmo Calijuri, Kevin Joseph Murphy

Volume: 25 - Issue: 2

Resumo. AIM:This study reports a comparison between decomposition kinetics of detritus derived from two macrophyte species (Polygonum lapathifolium L.: Polygonaceae; Eichhornia azurea (Sw.) Kunth.: Pontederiaceae) growing in a neotropical reservoir (Brazil), under laboratory and field conditions, in...

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Progressive recovery of a tropical deforested stream community after a flash flood - (2013)

Lucas Cerqueira Marques, Mônica Ceneviva-Bastos, Lilian Casatti

Volume: 25 - Issue: 2

Resumo. AIM: In this study, we evaluated and compared community attributes from a tropical deforested stream, located in a pasture area, in a period before (PRED I) and three times after (POSD I, II, and III) a flash flood, in order to investigate the existence of temporal modifications in community...

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The effects of abiotic variables on detritus decomposition in Brazilian subtropical mangroves - (2013)

Renan de Souza Rezende, Marcelo de Oliveira Pinto, José Francisco Gonçalves Jr., Mauricio Mello Petrucio

Volume: 25 - Issue: 2

Resumo. AIM: The objective of this study was to determine the rate of decomposition of two dominant arboreal species (Rhizophora mangle and Avicennia schaueriana) in two Brazilian subtropical mangroves (Ratones and Itacorubi) and their relationship with abiotic factors during two periods of the year...

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Algal and Cyanobacterial communities in two rivers of the province of San Luis (Argentina) subjected to anthropogenic influence - (2013)

Jorgelina Daruich, Susana Tripole, María Angélica Gil, Adriana Vallania

Volume: 25 - Issue: 1

Resumo. AIM: The use of biological indicators of pollution has increased in recent years as an alternative to the monitoring of water quality. Phytoplankton community selectively respond to different anthropogenic disturbances, such as water dams and the increase of nutrients coming from city centers,...

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Daphnia magna Straus, 1820 response to sediment samples from a contaminated river ( Rio Grande do Sul, Brazil) - (2013)

Nara Regina Terra, Silvana Pereira Gonçalves

Volume: 25 - Issue: 1

Resumo. AIM: The Sinos River, a tributary of Guaíba Lake, is 200 km long from the headwaters to the mouth and is influenced by several sources of pollution. A study to learn more about conditions in this river was performed in the middle and lower reaches. The study evaluated the effects of...

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Distribution of aquatic insects in urban headwater streams - (2013)

Luiz Ubiratan Hepp, Rozane Maria Restello, Silvia Vendruscolo Milesi, Cristiane Biasi, Joseline Molozzi

Volume: 25 - Issue: 1

Resumo. AIMS: The objective of this study was to evaluate the effects of urban environments on the distribution and occurrence of aquatic Ephemeroptera, Plecoptera and Trichoptera (EPT) insects in six urban subtropical streams; METHODS: Organisms were collected with a Surber sampler in 2005 and 2006,...

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Editorial - (2013)

Antonio Fernando Monteiro Camargo

Volume: 25 - Issue: 1

Resumo.

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Effects of marginal vegetation removal on Odonata communities - (2013)

Fernando Geraldo de Carvalho, Nelson Silva Pinto, José Max Barbosa de Oliveira Júnior, Leandro Juen

Volume: 25 - Issue: 1

Resumo. AIM: Here we assess the effects of habitat degradation on individuals of the two suborders of Odonata community of Borecaia river sub-basin. More specifically, we tested the hypothesis that Anisoptera richness would be positively affected by removal of vegetation; on the other hand, Zygoptera...

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Implementation of hydroacoustic for a rapid assessment of fish spatial distribution at a Brazilian Lake - Lagoa Santa, MG - (2013)

José Fernandes Bezerra-Neto, Ludmila Silva Brighenti, Ricardo Motta Pinto-Coelho

Volume: 25 - Issue: 1

Resumo. AIM: To study the distribution, structure, size and density of fish in the karst lake: Lagoa Central (Lagoa Santa, MG - surface area: 1.7 km²; mean depth: 4.0 m; and maximum depth: 7.3 m). METHODS: The hydroacoustic method with vertical beaming was applied, using the echosounder Biosonics...

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Piscivory by Hoplias aff. malabaricus (Bloch, 1794): a question of prey availability? - (2013)

Ana Karla Araujo Montenegro, Ana Carolina Brito Vieira, Maria Marcolina Lima Cardoso, Jane Enisa Ribeiro Torelli de Souza, Maria Cristina Crispim

Volume: 25 - Issue: 1

Resumo. AIM: In order to understand the factors which influence the predatory activity of the Hoplias aff. malabaricus, the present study evaluated feeding habits of this species and its relation to prey availability, in addition to environmental variables. METHODS: Six samplings were conducted in the...

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Temporal variation in phytoplankton community in a freshwater coastal lake of southern Brazil - (2013)

Denise Tonetta, Mauricio Mello Petrucio, Roselane Laudares-Silva

Volume: 25 - Issue: 1

Resumo. AIM: The aim of the present study was to study the vertical variation in phytoplankton community in a subtropical coastal lake and to verify the temporal variation of this community following variation in temperature and dissolved nitrogen and phosphorus. METHODS: Sampling of phytoplankton and...

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Trophic ecology of the ichthyofauna of a stretch of the Urucu River (Coari, Amazonas, Brazil) - (2013)

Igor David da Costa, Carlos Edwar de Carvalho Freitas

Volume: 25 - Issue: 1

Resumo. INTRODUCTION: The floodplains of the large Amazonian rivers are very productive as a result of seasonal fluctuations of water levels. This favors the fishes as they are provided with a wide range of habitats and food resources; AIM: In this study, we identified the trophic structure of fish...

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Use of artificial sediment to assess toxicity of chromium on Chironomus xanthus, Danio rerio and Poecilia reticulata - (2013)

Aline Fernanda Campagna, Beatriz Kawamura Rodrigues, Roberta Corrêa Nogueirol, Nelsy Fenerich Verani, Evaldo Luiz Gaeta Espíndola, Luís Reynaldo Ferracciú Alleoni

Volume: 25 - Issue: 1

Resumo. AIM: Artificial sediments with simple formulations were used to assess the toxicity of Cr to C. xanthus, D. rerio and P. reticulata. METHODS: The organisms were exposed to two sediment formulations: one without organic matter (S0) and one with 1% organic matter (SIII), both contaminated with Cr...

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Variation in the diet of a small characin according to the riparian zone coverage in an Atlantic Forest stream, northeastern Brazil - (2013)

Márcia Emília de Jesus Trindade, Alexandre Peressin, Maurício Cetra, Ricardo Jucá-Chagas

Volume: 25 - Issue: 1

Resumo. AIM: in this study we present data from the diet of Astyanax vermilion which were used as a tool to compare two sites of streams with different vegetation cover in Ribeirão Limoeiro, Cachoeira River Basin, BA. METHODS: Four samples were taken (March, June, September and December) using...

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How many species of cladocerans (Crustacea, Branchiopoda) are found in Brazilian Federal District? - (2013)

Francisco Diogo Rocha Sousa, Lourdes Maria Abdu Elmoor-Loureiro

Volume: 24 - Issue: 4

Resumo. AIM: This study aimed provides a checklist of cladocerans and also an evaluation of richness and species composition in the Federal District, Brazil. METHODS: Checklist of cladocerans was obtained evaluating data from the literature, from taxonomic collection (Elmoor-Loureiro's collection)...

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Distribution of aquatic insects in urban headwater streams Distribuição de insetos aquáticos em riachos urbanos - (2013)

Luiz Ubiratan Hepp, Rozane Maria Restello, Silvia Vendruscolo Milesi, Cristiane Biasi, Joseline Molozzi

Volume: - Issue: ahead

Resumo. AIMS: The objective of this study was to evaluate the effects of urban environments on the distribution and occurrence of aquatic Ephemeroptera, Plecoptera and Trichoptera (EPT) insects in six urban subtropical streams; METHODS: Organisms were collected with a Surber sampler in 2005 and 2006,...

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Effects of marginal vegetation removal on Odonata communities Efeitos da retirada da vegetação marginal sobre a comunidade de Odonata - (2013)

Fernando Geraldo de Carvalho, Nelson Silva Pinto, José Max Barbosa de Oliveira Júnior, Leandro Juen

Volume: - Issue: ahead

Resumo. AIM: Here we assess the effects of habitat degradation on individuals of the two suborders of Odonata community of Borecaia river sub-basin. More specifically, we tested the hypothesis that Anisoptera richness would be positively affected by removal of vegetation; on the other hand, Zygoptera...

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Water quality in the lotic area of the Antas river before and after the construction of the Monte Claro hydroelectric plant, south Brazil Qualidade da água nos trechos lóticos do rio das Antas antes e após a construção da usina hidrelétrica Monte Claro, sul do Brasil - (2013)

Adriane Marques Pimenta, Leonardo Marques Furlanetto, Edélti Faria Albertoni, Cleber Palma-Silva

Volume: - Issue: ahead

Resumo. AIM: This study characterized the water quality of the lotic areas of the Rio das Antas (Antas River)influenced by the construction of the Monte Claro hydroelectric plant (South Brazil), a run-of-the-river reservoir. METHODS: To assess the water quality, we selected four sampling points based on...

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A multimetric index based on fish fauna for the evaluation of the biotic integrity of streams at a mesohabitat scale Índice multimétrico com base na fauna de peixes para avaliação da integridade biótica de riachos em escala de meso-hábitat - (2012)

Lilian Casatti, Fabrício Barreto Teresa

Volume: 24 - Issue: 4

Resumo. AIM: In this study, we evaluated the ability of the Index of Biotic Integrity (IBI), based on fish fauna, to discriminate between reference streams and degraded streams at a mesohabitat scale. METHODS: We sampled the ichthyofauna of 96 mesohabitats (runs, riffles and pools) with electrofishing...

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Assessment of in vivo fluorescence method for chlorophyll-a estimation in optically complex waters (Curuai floodplain, Pará - Brazil) Avaliação do método de fluorescência in vivo para a estimativa da concentração de clorofila-a em águas opticamente complexas (planície de inundação do Curuai, Pará - Brasil) - (2012)

Rafael Damiati Ferreira, Cláudio Clemente Faria Barbosa, Evlyn Márcia Leão de Moraes Novo

Volume: 24 - Issue: 4

Resumo. AIM: This paper describes an experiment carried out to evaluate in vivo fluorescence (IVF) as an alternative method for chlorophyll-a estimation in optically complex aquatic environment (Amazon floodplain lakes) METHODS: The experiment consisted of collecting in situ measurements at 26 sampling...

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Editorial - (2012)

Antonio Fernando Monteiro Camargo

Volume: 24 - Issue: 4

Resumo.

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Editorial Editorial - (2012)

Antonio Fernando Monteiro Camargo

Volume: 24 - Issue: 4

Resumo.

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Effects of flooding regime and diel cycle on diet of a small sized fish associated to macrophytes Efeitos do regime hidrológico e do ciclo diário na dieta de uma espécie de pequeno porte associada à macrófitas - (2012)

Natália Carniatto, Rosemara Fugi, Geuza Cantanhêde, Éder André Gubiani, Norma Segatti Hahn

Volume: 24 - Issue: 4

Resumo. AIM: In this paper we assessed the effects of flooding (low and high water period) on the feeding activity and diet composition of Serrapinus notomelas in patches of the macrophyte Eichhornia azurea in a shallow floodplain lake (upper Paraná River Floodplain, Brazil). We also assessed the...

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Effects of nitrogen and phosphorus on the abundance and cell size of planktonic nanoflagellate communities Efeito da concentração de nitrogênio e fósforo na abundância e tamanho celular da comunidade de nanoflagelados planctônicos - (2012)

Danielle Goeldner Pereira, Fábio Amodêo Lansac-Tôha, Gustavo Mayer Pauleto, Luis Mauricio Bini, Luiz Felipe Machado Velho

Volume: 24 - Issue: 4

Resumo. AIM: We experimentally investigated the effects of nutrients (Nitrogen and Phosphorus) enrichment on the density, biomass, and cell size of pigmented and heterotrophic plankton nanoflagellates communities. METHODS: The experiment was done in mesocosms in a tropical reservoir during a 19-day...

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Eutrophization process in a system used for rearing the nile tilapia (Oreochromis niloticus), São Paulo State, Brazil Processo de eutrofização em um sistema utilizado para a criação da tilápia do Nilo (Oreochromis niloticus), São Paulo, Brasil - (2012)

Jeniffer Sati Pereira, Cacilda Thais Janson Mercante, Julio Vicente Lombardi, André Martins Vaz-dos-Santos, Clóvis Ferreira do Carmo, João Alexandre Saviolo Osti

Volume: 24 - Issue: 4

Resumo. Aquaculture is composed of various themes of interest, particularly does eutrophization due to feeding have direct effects on fish ponds and the whole aquatic system. This study focused on the study of the water quality of an aquatic system related to Nile tilapia (Oreochromis niloticus) rearing....

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How many species of cladocerans (Crustacea, Branchiopoda) are found in Brazilian Federal District? Quantas espécies de cladóceros (Crustacea, Branchiopoda) são encontradas no Distrito Federal? - (2012)

Francisco Diogo Rocha Sousa, Lourdes Maria Abdu Elmoor-Loureiro

Volume: 24 - Issue: 4

Resumo. AIM: This study aimed provides a checklist of cladocerans and also an evaluation of richness and species composition in the Federal District, Brazil. METHODS: Checklist of cladocerans was obtained evaluating data from the literature, from taxonomic collection (Elmoor-Loureiro's collection)...

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Influence of a cage farming on the population of the fish species Apareiodon affinis (Steindachner, 1879) in the Chavantes reservoir, Paranapanema River SP/PR, Brazil Influência de uma piscicultura em tanques-rede na população da espécie de peixe Apareiodon affinis (Steindachner, 1879) no reservatório de Chavantes, rio Paranapanema SP/PR, Brasil - (2012)

Heleno Brandão, Javier Lobón-Cerviá, Igor Paiva Ramos, Ana Carolina Souto, André Batista Nobile, Érica de Oliveira Penha Zica, Edmir Daniel Carvalho

Volume: 24 - Issue: 4

Resumo. AIM: The aim of the present study was to evaluate the diet and biological attributes of the population of Apareiodon affinis residing near net-cage fish farming activities in the Chavantes reservoir. METHODS: Samples were collected from two populations: one near the net cages (NC) and one from an...

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Influence of substratum surface roughness on periphytic algal community structure in a shallow tropical reservoir Influência da rugosidade do substrato sobre a estrutura da comunidade de algas perifíticas em reservatório raso tropical - (2012)

Mariane Lima de Souza, Carla Ferragut

Volume: 24 - Issue: 4

Resumo. AIM: This study aimed to evaluate the algal periphytic community structure on substrates with differing surface roughness in early and longer-term colonization; METHODS: Periphyton was sampled after 30 days (June 24 to July 24, 2008) and 5 days (July 07 to July 12, 2010) substrate exposure during...

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Limnological variations of a deep reservoir in periods with distinct rainfall patterns Variações na limnologia de um reservatório profundo em períodos com diferentes padrões de precipitação - (2012)

Ana Maria Geraldes, Catherine George

Volume: 24 - Issue: 4

Resumo. AIM: This study intends to provide information on how precipitation variation may impact environmental parameters (total phosphorus, water temperature, pH, conductivity, dissolved oxygen, Secchi depth, chlorophyll a and Anabaena abundance) and crustacean zooplankton composition and abundance....

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The influence of taxonomic resolution of Oligochaeta on the evaluation of water quality in an urban stream in Minas Gerais, Brazil A influência da resolução taxonômica de Oligochaeta na avaliação da qualidade da água em um córrego urbano em Minas Gerais, Brasil - (2012)

Gabriela Linhares Frizzera, Roberto da Gama Alves

Volume: 24 - Issue: 4

Resumo. OBJECTIVE: The objective of this study was to verify the identification of specimens of the Oligochaeta in different taxonomic levels (family and species) has the same potential for assessing the water quality of an urban stream in Minas Gerais, Brazil. METHODS: Oligochaeta specimens were...

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Are sugarcane leaf-detritus well colonized by aquatic macroinvertebrates? Detritos foliares de cana-de-açúcar são bem colonizados por macroinvertebrados aquáticos? - (2012)

Luciene Aparecida Leite-Rossi, Susana Trivinho-Strixino

Volume: 24 - Issue: 3

Resumo. AIM: The aim was to compare the kinetics of decomposition and the colonization of leaf litter of two plant species, the native Talauma ovata (pinha-do-brejo) and the exotic Saccharum officinarum (sugarcane), by aquatic macroinvertebrates; METHODS: From each substrate, three recipients of...

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Ecological attributes of the benthic community and indices of water quality in urban, rural and preserved environments Atributos ecológicos da comunidade bentônica e índices de qualidade da água de ambientes urbanos, rurais e preservados - (2012)

Claudia Eiko Yoshida, Ana Paula Pozzo Rios Rolla

Volume: 24 - Issue: 3

Resumo. INTRODUCTION: Reference streams are pristine streams, untouched or unaltered by man, it being possible to use their environmental characteristics as quality threshold values. Besides the organic impacts measured via water quality biological monitoring programs, it has become necessary to evaluate...

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Editorial - (2012)

Antonio Fernando Monteiro Camargo

Volume: 24 - Issue: 3

Resumo.

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Efficiency of a constructed wetland for wastewaters treatment Eficiência de um "wetland" construído no tratamento de efluentes - (2012)

Fernanda Travaini-Lima, Lúcia Helena Sipaúba-Tavares

Volume: 24 - Issue: 3

Resumo. AIM: The limnological characteristics of three different inlets water of the constructed wetland were compared in terms of concentration data and loading rate data and evaluated the removal efficiencies of nutrients, solids, BOD5, chlorophyll-a and thermotolerant coliforms (TC) by the treatment...

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Future ecological studies of Brazilian headwater streams under global-changes Estudos ecológicos futuros em riachos de cabeceira na perspectiva de mudanças globais - (2012)

Marcos Callisto, Adriano Sanches Melo, Darcilio Fernandes Baptista, José Francisco Gonçalves Junior, Manuel Augusto Simões Graça, Fernanda Gaudio Augusto

Volume: 24 - Issue: 3

Resumo. This paper results from discussions triggered during the "Stream Ecology Symposium" that took place at the XIII Congress of the Brazilian Society of Limnology in September of 2011 in Natal, Brazil. Based on our experiences, we have raised several questions regarding ecological studies...

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Microalgae community of the Huaytire wetland, an Andean high-altitude wetland in Peru Comunidade de microalgas do wetland Huaytire, uma área alagada de alta altitude nos Andes peruanos - (2012)

Gian Salazar-Torres, Vera Lúcia de Moraes Huszar

Volume: 24 - Issue: 3

Resumo. AIM: The diversity and distribution of microalgae communities in a high-altitude (3,000 to 4,500 m a.s.l) Andean wetland, regionally known as bofedal, were examined to assess seasonal and spatial patterns. METHODS: Samples were taken monthly from June to December, 2008 at 13 stations in the...

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Periphytic algal biomass in two distinct regions of a tropical coastal lake Biomassa de algas perifíticas em duas regiões distintas de uma lagoa costeira tropical - (2012)

Stéfano Zorzal de Almeida, Valéria de Oliveira Fernandes

Volume: 24 - Issue: 3

Resumo. AIM: This study assessed the phycoperiphyton biomass in two regions submitted to different human impacts on Juara Lake, a coastal ecosystem with multiple uses, to order to test the hypothesis that the sampling sites that receive domestic sewage shows higher biomass values. METHODS: It was...

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Physical, chemical and microbiological aspects during the dry and rainy seasons in a pond covered by macrophyte used in aquaculture water supply Aspectos físico-químicos e microbiológicos nas estações de seca e chuva em viveiro coberto por macrófitas usado no abastecimento de água para aquicultura - (2012)

Samuel Generoso Dias, Lúcia Helena Sipaúba-Tavares

Volume: 24 - Issue: 3

Resumo. AIM: The water quality of a pond covered by macrophytes and used as a water supply for aquaculture was evaluated during the dry and rainy seasons; METHODS: Six points were established for water sampling, at water inflow and outflow. Samplings were carried out monthly between June 2008 and May...

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Population biology of shrimp Macrobrachium jelskii (Miers, 1778) (Decapoda, Palaemonoidea) at the Grande River at northwest of the state of Minas Gerais, Brazil Biologia populacional do camarão Macrobrachium jelskii (Miers, 1778) (Decapoda, Palaemonoidea) no Rio Grande no noroeste do estado de Minas Gerais, Brasil - (2012)

Samara de Paiva Barros-Alves, Ariádine Cristine Almeida, Vivian Fransozo, Douglas Fernandes Rodrigues Alves, José Carlos da Silva, Valter José Cobo

Volume: 24 - Issue: 3

Resumo. AIM: The population biology of the freshwater shrimp Macrobrachium jelskii was investigated here emphasizing the length-frequency distribution, sex ratio, reproductive period and juvenile recruitment. In addition, the abundance of individuals was correlated with the abiotic factors. METHODS:...

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Water quality assessment of fifth-order tributaries of the reservoir at the Marechal Mascarenhas de Morais Hydroelectric Power Station in the Rio Grande watershed (State of Minas Gerais, Brazil) Avaliação da qualidade da água dos afluentes de quinta ordem do reservatório da Usina Hidrelétrica de Marechal Mascarenhas de Morais na bacia hidrográfica do médio rio Grande (Minas Gerais, Brasil) - (2012)

Douglas de Pádua Andrade, Lucas Rezende Penido Paschoal, Odila Rigolin de Sá, Norival França

Volume: 24 - Issue: 3

Resumo. Aim: This study assessed the water quality from the springs and river mouths of the fifth-order tributaries which compose the reservoir of Marechal Mascarenhas de Morais HPS in the middle Rio Grande watershed, Minas Gerais, Brazil. Methods: It has been studied 14 tributaries distributed in the...

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Water quality in the lotic area of the Antas river before and after the construction of the Monte Claro hydroelectric plant, south Brazil Qualidade da água nos trechos lóticos do rio das Antas antes e após a construção da usina hidrelétrica Monte Claro, sul do Brasil - (2012)

Adriane Marques Pimenta, Leonardo Marques Furlanetto, Edélti Faria Albertoni, Cleber Palma-Silva

Volume: 24 - Issue: 3

Resumo. AIM: This study characterized the water quality of the lotic areas of the Rio das Antas (Antas River)influenced by the construction of the Monte Claro hydroelectric plant (South Brazil), a run-of-the-river reservoir. METHODS: To assess the water quality, we selected four sampling points based on...

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Biogeochemical cycling of urea in the aquatic systems of Pindaré and Turiaçu River basins, a pre-Amazonian floodplain, Baixada Maranhense, Brazil Ciclo biogeoquímico da ureia nos sistemas aquáticos das bacias hidrográficas do Pindaré e Turiaçu, várzea pré-Amazônica, Baixada Maranhense, Brasil - (2012)

Osamu Mitamura, Nobutada Nakamoto, Maria do Socorro Rodrigues Ibañez, Paulo Roberto Saraiva Cavalcante, José Policarpo Costa Neto, Ricardo Barbieri

Volume: 24 - Issue: 2

Resumo. AIM: This work is aimed at extending the understanding of urea cycle in freshwater ecosystems. Its degradation rate concerning microorganisms activities was measured in the turbid waters of Pindaré and Turiaçu rivers located on the pre-Amazonian floodplain, Brazil; METHODS: The...

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Characterization of effluents from bullfrog (Lithobates catesbeianus, Shaw, 1802) grow-out ponds Caracterização de efluentes de viveiros de engorda de rã-touro (Lithobates catesbeianus, Shaw, 1802) - (2012)

Fernanda de Freitas Borges, Luiz Augusto do Amaral, Marta Verardino De Stéfani

Volume: 24 - Issue: 2

Resumo. AIM: Current analysis characterizes the effluent from bullfrog-rearing ponds during the grow-out phase; METHODS: Temperature, pH, dissolved oxygen, electric conductivity, turbidity, total phosphorus, N-NH3, N-NO3, BOD5 and COD and the number of thermotolerant coliforms (Escherichia coli) of the...

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Copepods (Crustacea, Maxillopoda) from shallow reservoirs Copépodes (Crustacea, Maxillopoda) em reservatórios rasos - (2012)

Maria Stela Maioli Castilho-Noll, Carolina Figueira Câmara, Maira Favaron Chicone, Érico Hissashi Shibata, Ligia Roma Stephan

Volume: 24 - Issue: 2

Resumo. AIM: Among the planktonic microcrustaceans, copepods Cyclopoida and Calanoida are the most representative groups, being the largest biomass of the plankton community. The aim of this work is to catalogue and analyze the distribution of copepod species (Crustacea, Maxillopoda) in pelagic and...

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Effects of net cages on the vertical distribution of zooplankton in a semi-arid reservoir, northeastern Brazil Interferência de tanques-rede na distribuição vertical do zooplâncton num açude do semi-árido, nordeste do Brasil - (2012)

Glécia Trinta de Paula Freitas, Maria Cristina Crispim, Hênio do Nascimento de Melo Júnior

Volume: 24 - Issue: 2

Resumo. AIM: Carneiro reservoir is an aquatic environment used for net cage aquaculture activities, located in the semi-arid region of northeastern Brazil. Vertical distribution was evaluated in order to determine the effects of organic enrichment induced by aquaculture on zooplankton movements. METHODS:...

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Evaluation of the efficiency of the sewage treatment plant from the University of Santa Cruz do Sul (UNISC), RS, Brazil Avaliação da eficiência da estação de tratamento de esgoto da Universidade de Santa Cruz do Sul (UNISC), RS, Brasil - (2012)

Adriana Düpont, Eduardo Alcayaga Lobo

Volume: 24 - Issue: 2

Resumo. AIM: The main objective was to evaluate the efficiency of the sewage treatment plant (STP) of UNISC, through the ecotoxicological characterization and the analyses of the physical, chemical and microbiological variables from the raw and treated effluent. METHODS: Samples were collected during...

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Hydrochemistry of Cachoeira River (Bahia State, Brazil) Hidroquímica do Rio Cachoeira (Bahia, Brasil) - (2012)

Maria Zita Tabosa Pinheiro de Queiroz Lima Lucio, Simone Setúbal dos Santos, Daniela Mariano Lopes da Silva

Volume: 24 - Issue: 2

Resumo. AIM: The aim of this study is to evaluate the spatial-temporal changes of chemical elements in the surface waters of the Cachoeira River in order to evaluate the impacts of anthropogenic activities in water quality; METHODS: Samples were collected monthly between August 2008 and August 2009 at...

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Inter-annual chemical stratification in Brazilian natural lakes: meromixis and hypolimnetic memory Estratificação química em lagos naturais brasileiros: meromixia e memória hipolimnética - (2012)

Luciana Gomes Barbosa, Francisco Antonio Rodrigues Barbosa, Carlos Eduardo de Mattos Bicudo

Volume: 24 - Issue: 2

Resumo. AIM: chemical stratification and the patterns of light limitation and nutrients of two natural lakes, one shallow and the other one deep, were comparatively evaluated, both lakes located in the southeast Brazil. METHODS: pH, electrical conductivity, dissolved oxygen, total dissolved solids and...

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Spatial and temporal change characterization of Ceratium furcoides (Dinophyta) in the equatorial reservoir Riogrande II, Colombia Caracterização das mudanças espaciais e temporais de Ceratium furcoides (Dinophyta) no reservatório equatorial Riogrande II (Entrerríos, Antioquia, Colombia) - (2012)

Carolina Bustamante Gil, John Jairo Ramírez Restrepo, Andrés Boltovskoy, Amparo Vallejo

Volume: 24 - Issue: 2

Resumo. AIM: To establish the dynamics of C. furcoides in horizontal and temporal scales; and to determine the main ecological factors related to its dynamics. METHODS: Samples were taken in five stations between July 2002 and July 2003. Physical and chemical variables were sampled monthly. Density was...

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The influence of xenobiotics in river sediment on the reproduction and survival of Daphnia magna, 1820, Straus Influência de xenobióticos no sedimento de rio sobre a reprodução e a sobrevivência de Daphnia magna, 1820, Straus - (2012)

Silvana Pereira Gonçalves, Fabiane Lucheta, Viviane Kelin de Souza, Nara Regina Terra

Volume: 24 - Issue: 2

Resumo. AIM: The Taquari River, a tributary of Guaíba Lake, is a major economic and environmental source for Rio Grande do Sul, a state located in the far south of Brazil; METHODS: This study evaluated the interference of sediment from this river in the reproduction and survival of 320...

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The role of limnological variables and habitat complexity in impacted tropical streams as regulatory factors on the flagellate protozoa community O papel das variáveis limnológicas e da complexidade de habitats em riachos tropicais impactados como fatores reguladores da comunidade de protozoários flagelados - (2012)

Janielly Carvalho Camargo, Ludgero Cardoso Galli Vieira, Luiz Felipe Machado Velho

Volume: 24 - Issue: 2

Resumo. OBJECTIVE: To contribute to the knowledge of patterns of spatial and seasonal distribution of composition and species richness of flagellate protozoa in tropical impacted streams and to identify which variables (physical and chemical or descriptor variables of habitat complexity) control these...

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Aquatic macrophytes as indicators of water quality in subtropical shallow lakes, Southern Brazil Macrófitas aquáticas como indicadores da qualidade da água em pequenos lagos rasos subtropicais, Sul do Brasil - (2012)

Sabrina Amaral Pereira, Cláudio Rossano Trindade Trindade, Edélti Faria Albertoni, Cleber Palma-Silva

Volume: 24 - Issue: 1

Resumo. AIMS: We evaluated the potential of aquatic macrophyte communities as bioindicators in six small shallow lakes. METHODS: The sampling was conducted monthly for one year, during which all macrophytes were surveyed, and the water temperature, dissolved oxygen, pH, conductivity, total alkalinity,...

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Aquatic systems in semi-arid Brazil: limnology and management Ecossistemas aquáticos do semi-árido brasileiro: aspectos limnológicos e manejo - (2012)

José Etham de Lucena Barbosa, Elvio Sérgio Figueredo Medeiros, Jandeson Brasil, Raquel da Silva Cordeiro, Maria Cristina Basilio Crispim, Gustavo Henrique Gonzaga da Silva

Volume: 24 - Issue: 1

Resumo. Aquatic systems in semi-arid Brazil include natural shallow lakes, artificial reservoirs and intermittent streams and rivers. These systems are distinctive features in the semi-arid landscape and comprise a range of associated systems functioning as an ever-changing mosaic of dry/wet patches....

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Calibration of water quality index (WQI) based on Resolution nº 357/2005 of the Environment National Council (CONAMA) Calibração do índice de qualidade da água (IQA) com base na Resolução nº 357/2005 do Conselho Nacional do Meio Ambiente (CONAMA) - (2012)

Daiane Lautert Moretto, Ruben Edgardo Panta, Adilson Ben da Costa, Eduardo Alexis Lobo

Volume: 24 - Issue: 1

Resumo. Environmental monitoring studies in the Hydrographical Basin of Pardo River, RS, Brazil, in the time series from 2007 to 2009, showed no agreement between the water quality evaluation obtained through the Water Quality Index (WQI - NSF), which ranged from "regular" to "good",...

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Cladocerans from gut contents of fishes associated to macrophytes from Taquari River Basin, MS, Brazil Cladóceros do conteúdo estomacal de peixes associados a macrófitas da Bacia do Rio Taquari, MS, Brasil - (2012)

Adriana Maria Güntzel, Ilze Katsue Morita Melo, Kennedy Francis Roche, Valéria Flávia Batista da Silva, Priscila Gusmão Pompiani

Volume: 24 - Issue: 1

Resumo. AIM: The aim of this study was to identify the cladocerans species from the gut contents of fishes sampled in an oxbow lake from Taquari River Basin, MS, with the specific view of investigating the importance of these crustaceans in the fishes diets; METHODS: Sampling was carried out in April and...

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Hydroacoustic assessment of fish and Chaoborus (Diptera-Chaoboridae) distribution in three Neotropical lakes Avaliação hidroacústica da distribuição de peixes e Chaoborus sp. (Diptera-Chaoboridae) em três lagos neotropicais - (2012)

José Fernandes Bezerra-Neto, Ludmila Silva Brighenti, Nelson Azevedo Santos Teixeira de Mello, Ricardo Motta Pinto-Coelho

Volume: 24 - Issue: 1

Resumo. AIM: This study aims to demonstrate the potential of hydroacoustics in the study of behavior of the invertebrate Chaoborus and fish in neotropical water environments; METHODS: Synoptic campaigns were conducted in May and June-2008 in Dom Helvécio and Carioca lakes, at the Parque Estadual...

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Hydrological stress as a limiting factor of the invasion of Limnoperna fortunei (Dunker, 1857) in the Upper Paraná River (Brazil) Estresse hidrológico como fator limitante para a invasão de Limnoperna fortunei (Dunker,1857) no Alto Rio Paraná (Brasil) - (2012)

Mônica de Cássia Souza Campos, Rosane Lanzer, Paulo de Tarso Castro

Volume: 24 - Issue: 1

Resumo. Limnoperna fortunei (Dunker, 1857), is an asiatic mussel that arrived in South America in 1991. Since 2004, we have noticed that the advance of this species in the lower Paranaíba River, a tributary of the Upper Paraná River, is slow when compared to the average speed of 240 km/year...

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Length-weight regressions of the microcrustacean species from a tropical floodplain Regressões peso-comprimento das espécies de microcrustáceos em uma planície de inundação tropical - (2012)

Fábio de Azevedo, Juliana Déo Dias, Louizi de Souza Magalhães Braghin, Cláudia Costa Bonecker

Volume: 24 - Issue: 1

Resumo. AIM: This study presents length-weight regressions adjusted for the most representative microcrustacean species and young stages of copepods from tropical lakes, together with a comparison of these results with estimates from the literature for tropical and temperate regions; METHODS: Samples...

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Net cages in fish farming: a scientometric analysis Tanques rede em piscicultura: uma análise cienciométrica - (2012)

Juliana Déo Dias, Nadson Ressyé Simões, Cláudia Costa Bonecker

Volume: 24 - Issue: 1

Resumo. AIM: This study presents a scientometric analysis of studies on net cages in order to determine whether these studies are considering environmental issues or only seeking an increase in food production; METHODS: The survey of articles was accomplished using the Thomson Reuters Database (ISI Web...

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Space-temporal dynamics of limnological variables in a floodplain wetland located at Ribeira do Iguape Valley (São Paulo, Brazil) at different hydrological periods Dinâmica espaço-temporal de variáveis limnológicas em uma área alagada localizada no Vale do Ribeira do Iguape (São Paulo, Brasil) em diferentes períodos hidrológicos - (2012)

Roseli Frederigi Benassi, Rogério Herlon Furtado Freire, Maria do Carmo Calijuri

Volume: 24 - Issue: 1

Resumo. AIM: The main goal of this research was to investigate the influence of the hydrological pulses on the space-temporal dynamics of physical and chemical variables in a wetland adjacent to Jacupiranguinha River (São Paulo, Brazil); METHODS: Eleven sampling points were distributed among the...

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The effect of the land use on phytoplankton assemblages of a Cerrado stream (Brazil) Os efeitos do uso do solo sobre as assembleias fitoplanctônicas de um riacho de Cerrado (Brasil) - (2012)

Mateus Ferrareze

Volume: 24 - Issue: 1

Resumo. AIM: Our aim was to investigate whether land use from the adjacent terrestrial environment influences phytoplankton assemblage structure (composition, richness, diversity, and abundance) and biomass (chlorophyll-a) in a Cerrado stream during different periods of the year. METHOD: The fieldwork...

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Are sugarcane leaf-detritus well colonized by aquatic macroinvertebrates? Detritos foliares de cana-de-açúcar são bem colonizados por macroinvertebrados aquáticos? - (2012)

Luciene Aparecida Leite-Rossi, Susana Trivinho-Strixino

Volume: - Issue: ahead

Resumo. AIM: The aim was to compare the kinetics of decomposition and the colonization of leaf litter of two plant species, the native Talauma ovata (pinha-do-brejo) and the exotic Saccharum officinarum (sugarcane), by aquatic macroinvertebrates; METHODS: From each substrate, three recipients of...

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Ecological attributes of the benthic community and indices of water quality in urban, rural and preserved environments Atributos ecológicos da comunidade bentônica e índices de qualidade da água de ambientes urbanos, rurais e preservados - (2012)

Claudia Eiko Yoshida, Ana Paula Pozzo Rios Rolla

Volume: - Issue: ahead

Resumo. INTRODUCTION: Reference streams are pristine streams, untouched or unaltered by man, it being possible to use their environmental characteristics as quality threshold values. Besides the organic impacts measured via water quality biological monitoring programs, it has become necessary to evaluate...

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Efficiency of a constructed wetland for wastewaters treatment Eficiência de um "wetland" construído no tratamento de efluentes - (2012)

Fernanda Travaini-Lima, Lúcia Helena Sipaúba-Tavares

Volume: - Issue: ahead

Resumo. AIM: The limnological characteristics of three different inlets water of the constructed wetland were compared in terms of concentration data and loading rate data and evaluated the removal efficiencies of nutrients, solids, BOD5, chlorophyll-a and thermotolerant coliforms (TC) by the treatment...

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Future ecological studies of Brazilian headwater streams under global-changes Estudos ecológicos futuros em riachos de cabeceira na perspectiva de mudanças globais - (2012)

Marcos Callisto, Adriano Sanches Melo, Darcilio Fernandes Baptista, José Francisco Gonçalves Junior, Manuel Augusto Simões Graça, Fernanda Gaudio Augusto

Volume: - Issue: ahead

Resumo. This paper results from discussions triggered during the "Stream Ecology Symposium" that took place at the XIII Congress of the Brazilian Society of Limnology in September of 2011 in Natal, Brazil. Based on our experiences, we have raised several questions regarding ecological studies...

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Microalgae community of the Huaytire wetland, an Andean high-altitude wetland in Peru Comunidade de microalgas do wetland Huaytire, uma área alagada de alta altitude nos Andes peruanos - (2012)

Gian Salazar-Torres, Vera Lúcia de Moraes Huszar

Volume: - Issue: ahead

Resumo. AIM: The diversity and distribution of microalgae communities in a high-altitude (3,000 to 4,500 m a.s.l) Andean wetland, regionally known as bofedal, were examined to assess seasonal and spatial patterns. METHODS: Samples were taken monthly from June to December, 2008 at 13 stations in the...

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Periphytic algal biomass in two distinct regions of a tropical coastal lake Biomassa de algas perifíticas em duas regiões distintas de uma lagoa costeira tropical - (2012)

Stéfano Zorzal de Almeida, Valéria de Oliveira Fernandes

Volume: - Issue: ahead

Resumo. AIM: This study assessed the phycoperiphyton biomass in two regions submitted to different human impacts on Juara Lake, a coastal ecosystem with multiple uses, to order to test the hypothesis that the sampling sites that receive domestic sewage shows higher biomass values. METHODS: It was...

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Physical, chemical and microbiological aspects during the dry and rainy seasons in a pond covered by macrophyte used in aquaculture water supply Aspectos físico-químicos e microbiológicos nas estações de seca e chuva em viveiro coberto por macrófitas usado no abastecimento de água para aquicultura - (2012)

Samuel Generoso Dias, Lúcia Helena Sipaúba-Tavares

Volume: - Issue: ahead

Resumo. AIM: The water quality of a pond covered by macrophytes and used as a water supply for aquaculture was evaluated during the dry and rainy seasons; METHODS: Six points were established for water sampling, at water inflow and outflow. Samplings were carried out monthly between June 2008 and May...

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Population biology of shrimp Macrobrachium jelskii (Miers, 1778) (Decapoda, Palaemonoidea) at the Grande River at northwest of the state of Minas Gerais, Brazil Biologia populacional do camarão Macrobrachium jelskii (Miers, 1778) (Decapoda, Palaemonoidea) no Rio Grande no noroeste do estado de Minas Gerais, Brasil - (2012)

Samara de Paiva Barros-Alves, Ariádine Cristine Almeida, Vivian Fransozo, Douglas Fernandes Rodrigues Alves, José Carlos da Silva, Valter José Cobo

Volume: - Issue: ahead

Resumo. AIM: The population biology of the freshwater shrimp Macrobrachium jelskii was investigated here emphasizing the length-frequency distribution, sex ratio, reproductive period and juvenile recruitment. In addition, the abundance of individuals was correlated with the abiotic factors. METHODS:...

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Different levels of taxonomic resolution in bioassessment: a case study of oligochaeta in lowland streams - (2011)

Agustina Cortelezzi, Laura Cecilia Armendáriz, María Vanesa López van Oosterom, Rosana Cepeda, Alberto Rodrigues Capítulo

Volume: 23 - Issue: 4

Resumo. AIM: This study evaluated the use of oligochaetes at different levels of taxonomic resolution as environmental indicators in Argentine lowland streams affected by different land uses. METHODS: Sampling sites were grouped based on the physicochemical and habitat characteristics (low-, moderate-,...

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Diversity of phytoplankton community in different urban aquatic ecosystems in metropolitan João Pessoa, state of Paraíba, Brazil Diversidade da comunidade fitoplactônica em diferentes ecossistemas aquáticos urbanos da região metropolitana de João Pessoa, PB, estado da Paraíba, Brasil - (2011)

Davi Freire da Costa, Ênio Wocyli Dantas

Volume: 23 - Issue: 4

Resumo. AIM: The aim of the present study was to identify which environmental factors affect the seasonal phytoplankton structure in different types of tropical aquatic ecosystems. Phytoplankton sampling was performed bi-monthly from August 2009 to June 2110 at three sites in the Solon de Lucena Lake,...

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Editorial - (2011)

Antonio Fernando Monteiro Camargo

Volume: 23 - Issue: 4

Resumo.

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Effect of Urucu oil (Brazilian Amazon) on the biomass of the aquatic macrophyte Eichhornia crassipes (Mart.) Solms (Pontederiaceae) Efeito do petróleo de Urucu (Amazônia/Brasil) sobre a biomassa da macrófita aquática Eichhornia crassipes (Mart.) Solms (Pontederiaceae) - (2011)

Luciana Carvalho Crema, Jose Francisco Vicente Biudes, Antonio Fernando Monteiro Camargo

Volume: 23 - Issue: 4

Resumo. The rivers and floodplain lakes of the Urucu petroleum-bearing region in central Amazonia are extensively colonized by aquatic macrophytes, which may be affected by accidental spills during oil extraction and transportation operations. Among the species of macrophytes, the free-floating...

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Effects of liming and development of Curimbatá (Prochilodus lineatus) larvae on the abundance of zooplankton in fish ponds Efeitos da calagem e desenvolvimento do Curimbatá (Prochilodus lineatus) na abundância do zooplâncton em viveiros de piscicultura - (2011)

Thécia Alfenas Silva Valente Paes, José Mauro Valente Paes, Nilton Eduardo Torres Rojas, Odete Rocha, Maria José dos Santos Wisniewski

Volume: 23 - Issue: 4

Resumo. AIM: We aimed to evaluate the influence of the correction of the water alkalinity in the fish ponds on the density of zooplankton under a period they were stocked with larvae of Prochilodus lineatus, a neotropical fish called "Curimbatá". METHODS: We used a factorial design...

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Influence of net-cage fish farming on zooplankton biomass in the Itá reservoir, SC, Brazil Influência da piscicultura em tanque-rede sobre a biomassa do zooplâncton no reservatório de Itá, SC, Brasil - (2011)

Bruna Roque Loureiro, Christina Wyss Castelo Branco, Evoy Zaniboni Filho

Volume: 23 - Issue: 4

Resumo. OBJECTIVES: This study aimed to verify the influence of net-cage fish farming on zooplankton biomass in the Itá reservoir (Uruguay River, Brazil). METHODS: Samples were collected monthly from October/2009 to May/2010 at the surface and at the bottom in two sampling stations, the net-cage...

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Invertebrates associated to Eichhornea azurea Kunth in a lagoon of the Upper Paraná River: composition, community attributes and influence of abiotic factors Invertebrados associados à Eichhornea azurea Kunth em uma lagoa do alto rio Paraná: composição, atributos da comunidade e influência de fatores abióticos - (2011)

Valéria Flávia Batista-Silva, Daiane Dias Boneto, Dayani Bailly, Milza Celi Fedatto Abelha, Elaine Antoniassi Luiz Kashiwaqui

Volume: 23 - Issue: 4

Resumo. AIM: We evaluated the composition and community attributes of invertebrates associated to Eichhornia azurea at Cascalho Lagoon, Upper Paraná River, Mato Grosso do Sul State, Brazil, over a hydrological cycle, as well the possible influence of abiotic factors upon these attributes. METHODS:...

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Relationship between banana plant cultivation and stream macroinvertebrate communities Relação entre cultivo de banana e a comunidade de macroinvertebrados aquáticos - (2011)

Priscila Kleine, Susana Trivinho-Strixino, Juliano José Corbi

Volume: 23 - Issue: 4

Resumo. AIMS: The present study describes the influence of banana plant cultivation on macroinvertebrate communities of streams located in the southeastern region of São Paulo state in the Atlantic Forest (four located in areas of banana cultivation and four in preserved areas); METHODS: Sampling...

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Spatial and seasonal distribution of chromophoric dissolved organic matter in the Upper Paraná River floodplain environments ( Brazil) Distribuição espacial e sazonal da matéria orgânica dissolvida cromófora em ambientes da planície de inundação do alto rio Paraná (Brasil) - (2011)

Mariana Carolina Teixeira, Júlio César Rodrigues de Azevedo, Thomaz Aurélio Pagioro

Volume: 23 - Issue: 4

Resumo. AIM: Our aim was to identify dissolved organic matter (DOM) main sources in environments of the Upper Paraná River floodplain and their seasonal and spatial variation. METHODS: Ultraviolet-visible and fluorescence spectroscopy were utilized. The samples were obtained from November 2007 to...

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Temporal variation in the biomass and nutrient status of Azolla filiculoides Lam. (Salviniaceae) in a small shallow dystrophic lake Variação temporal de biomassa e estado nutricional de Azolla filiculoides Lam (Salviniaceae) em um pequeno lago raso distrófico - (2011)

Claudio Rossano Trindade Trindade, Edélti Faria Albertoni, Cleber Palma-Silva

Volume: 23 - Issue: 4

Resumo. AIM: This study determined the temporal variation of the biomass and the concentrations of carbon, nitrogen and phosphorus in Azolla filiculoides Lam. in a small (0.5 ha) shallow dystrophic lake located in the city of Rio Grande (Rio Grande do Sul State, Brazil). METHOD: Sampling was conducted...

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The grass is always greener on the other side: Triplectides Kolenati, 1859 (Leptoceridae) and Marilia Müller, 1880 (Odontoceridae) occupying cases of other Trichoptera species A grama é sempre mais verde do outro lado: Triplectides Kolenati, 1859 (Leptoceridae) e Marilia Müller, 1880 (Odontoceridae) ocupando casulos de outras espécies de Trichoptera - (2011)

Lucas Marques de Camargos, Ana Maria Oliveira Pes

Volume: 23 - Issue: 4

Resumo. AIM: Larvae of Triplectides spp. and Marilia sp. occupying cases of other species are recorded and photographed; METHODS: The material was collected in different sites and dates in Atlantic Forest and Central Amazon regions; RESULTS: The Triplectides larvae seem to have an opportunistic behavior,...

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Density and body size of the larval stages of the invasive golden mussel (Limnoperna fortunei) in two neotropical rivers Densidade e tamanho dos estágios larvais do molusco invasor mexilhão dourado (Limnoperna fortunei) em dois rios neotropicais - (2011)

Vivianne Eilers, Márcia Divina de Oliveira, Kennedy Francis Roche

Volume: 23 - Issue: 3

Resumo. AIM: The present study involved an analysis of the monthly variations in the population densities and body sizes of the different stages of planktonic larvae of the invasive golden mussel (Limnoperna fortunei), in the rivers Paraguay and Miranda; METHODS: The study was carried out between...

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Evaluation of water quality parameters for monitoring natural, urban, and agricultural areas in the Brazilian Cerrado Avaliação de parâmetros de qualidade de água para monitoramento de áreas naturais, urbanas e agrícolas no Cerrado brasileiro - (2011)

Daphne Heloisa de Freitas Muniz, Aline Silva Moraes, Ingrid de Souza Freire, Carlos José Domingos da Cruz, Jorge Enoch Furquim Werneck Lima, Eduardo Cyrino Oliveira-Filho

Volume: 23 - Issue: 3

Resumo. INTRODUCTION: Brazil's Federal District (FD) has seen steep population growth in recent years, and this has increased demand for high-quality water. AIM: The present work aims to evaluate the quality of surface water from two water bodies in the FD at six sampling points, three of which are...

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First adult record of Misgurnus anguillicaudatus, Cantor 1842 from Ribeira de Iguape River Basin, Brazil Primeiro registro de um indivíduo adulto de Misgurnus anguillicaudatus, Cantor 1842 do rio Ribeira de Iguape, Brasil - (2011)

Caio Isola Dallevo do Amaral Gomes, Alexandre Peressin, Mauricio Cetra, Walter Barrella

Volume: 23 - Issue: 3

Resumo. AIM: This work aimed to describe a first record of Misgurnus anguilicaudatus, Cantor 1842 in São Paulo state, as well as your potential impacts on native populations. METHODS: The specimen was caught by eletro-fishing device, in Itaguapeva river, Ribeira do Iguape river basin, Ibiuna (SP),...

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Focusing on variation: methods and applications of the concept of beta diversity in aquatic ecosystems Focando na variação: métodos e aplicações do conceito de diversidade beta em ecossistemas aquáticos - (2011)

Adriano Sanches Melo, Fabiana Schneck, Luiz Ubiratan Hepp, Nadson Ressyé Simões, Tadeu Siqueira, Luis Mauricio Bini

Volume: 23 - Issue: 3

Resumo. Ecologists usually estimate means, but devote much less attention to variation. The study of variation is a key aspect to understand natural systems and to make predictions regarding them. In community ecology, most studies focus on local species diversity (alpha diversity), but only in recent...

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Impact of coal mining on water quality of three artificial lakes in Morozini River Basin (Treviso, Santa Catarina State, Brazil) Impacto da atividade de mineração na qualidade da água de três lagos artificiais da bacia do rio Morozini (Treviso, Estado de Santa Catarina, Brasil) - (2011)

Viviane Moschini-Carlos, Marcelo Luiz Martins Pompêo, Felipe de Lucia Lobo, Sergio Tadeu Meirelles

Volume: 23 - Issue: 3

Resumo. AIM: To assess water quality of three lakes located in an abandoned coal mining area, in the Morozini River basin (Treviso, Santa Catarina State, Brazil). METHODS: The study sites were three lakes mining pits flooded after deactivation, near the drainage basin of the Morozini River (Treviso City,...

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Impact of the 2009 extreme water level variation on phytoplankton community structure in Lower Amazon floodplain lakes Impacto da variação extrema do nível da água em 2009 sobre a estrutura da comunidade fitoplanctônica de lagos da planície do Baixo Amazonas - (2011)

Simone Casali, Maria do Carmo Calijuri, Bernard Barbarisi, Vivian Fróes Renó, Adriana Gomes Affonso, Cláudio Barbosa, Thiago Sanna Freire Silva, Evlyn Márcia Leão de Moraes Novo

Volume: 23 - Issue: 3

Resumo. AIM: This paper examines the effect of the extreme water level change in 2009 on the structure and diversity of the phytoplankton communities in lakes of the Lower Amazon Floodplain, and compares it to phytoplankton community structure data reported in the literature for 2002 and 2003 high water...

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Influence of environmental factors on benthic macroinvertebrate communities of urban streams in Vereda habitats, Central Brazil Influência de variáveis ambientais na comunidade de macroinvertebrados bentônicos de córregos urbanos de Veredas, Brasil Central - (2011)

Renata de Moura Guimaraes Souto, Kátia Gomes Facure, Luis Alfredo Pavanin, Giuliano Buzá Jacobucci

Volume: 23 - Issue: 3

Resumo. AIM: Veredas and the aquatic and semi-aquatic communities play a key role in watershed protection in the Cerrado Biome. Information about the effects of physical and chemical variables and habitat integrity on benthic communities has been increased in recent years; however, there is no study...

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Population and feeding structure of Steindachnerina notonota Miranda-Ribeiro, 1937 (Actinopterygii, Characiformes, Curimatidae) in Taperoá II dam, semi-arid region of Paraíba, Brazil Estrutura populacional e alimentar de Steindachnerina notonota Miranda Ribeiro, 1937 (Actinopterygii, Characiformes, Curimatidae) no Açude Taperoá II, na região do semi-árido da Paraíba, Brasil - (2011)

Ana Karla Araujo Montenegro, Jane Enisa Ribeiro Torelli, Maria Cristina Crispim, Ana Maria Alves Medeiros

Volume: 23 - Issue: 3

Resumo. AIM: The present study investigated population structure, weight-length relationships, sex ratio and associations between feeding activity and reproductive period, diet and alimentary regime of Steindachnerina notonota at Taperoá II dam, semi-arid region of Paraíba State. METHODS:...

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Time series analysis of water surface temperature and heat flux components in the Itumbiara Reservoir (GO), Brazil Análise da série temporal da temperatura da superfície da água e dos componentes do balanço de calor no Reservatório de Itumbiara (GO), Brasil - (2011)

Enner Herenio de Alcântara, José Luiz Stech, João Antônio Lorenzzetti, Evlyn Márcia Leão de Moraes Novo

Volume: 23 - Issue: 3

Resumo. AIM: Water temperature plays an important role in ecological functioning and in controlling the biogeochemical processes of the aquatic system. Conventional water quality monitoring is expensive and time consuming. It is particularly challenging for large water bodies. Conversely, remote sensing...

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Zooplankton body-size structure and biomass in tropical floodplain lakes: relationship with planktivorous fishes Estrutura de tamanho do corpo e biomassa do zooplâncton em lagos tropicais de planície de inundação: relações com peixes planctívoros - (2011)

Claudia Costa Bonecker, Fábio de Azevedo, Nadson Ressyé Simões

Volume: 23 - Issue: 3

Resumo. AIM: This study evaluated whether the size structure of the zooplankton community, as analyzed from density and biomass, would be influenced by bottom-up and/or top-down mechanisms in isolated lakes from the Upper Paraná River floodplain during dry and rainy periods. METHODS: zooplankton...

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Aerobic and anaerobic mineralization of Salvinia molesta and Myriophyllum aquaticum leachates from a tropical reservoir (Brazil) Mineralização aeróbia e anaeróbia dos lixiviados de Salvinia molesta e Myriophyllum aquaticum de um reservatório tropical (Brasil) - (2011)

Renato Henriques da Silva, Rafael Spadaccia Panhota, Irineu Bianchini Junior

Volume: 23 - Issue: 2

Resumo. AIM: This study aimed at describing and discussing the leachates mineralization (aerobic and anaerobic) of two species of aquatic macrophytes (Salvinia molesta and Myriophyllum aquaticum) from a tropical reservoir (22° 00' S and 47° 54' W); METHODS: The incubations were prepared...

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Aquatic invertebrate's distribution in a freshwater coastal lagoon of southern Brazil in relation to water and sediment characteristics Distribuição de invertebrados aquáticos em uma lagoa costeira de água doce ao sul do Brasil em relação às características de água e sedimento - (2011)

Leonardo Kleba Lisboa, Aurea Luiza Lemes da Silva, Mauricio Mello Petrucio

Volume: 23 - Issue: 2

Resumo. AIM: The objective of this study was to evaluate the influence of water and sediment characteristics on the abundance, richness and diversity of the benthic invertebrate community in Peri lagoon, a freshwater coastal lagoon located in central coast of Santa Catarina State; METHODS: Samplings were...

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Controlling factors of benthic macroinvertebrates distribution in a small tropical pond, lateral to the Paranapanema River (São Paulo, Brazil) Macroinvertebrados bentônicos e fatores controladores de sua distribuição em uma pequena lagoa tropical adjacente ao rio Paranapanema (São Paulo, Brasil) - (2011)

Erika Mayumi Shimabukuro, Raoul Henry

Volume: 23 - Issue: 2

Resumo. AIM: The aim of the present study was to examine the benthic fauna in a marginal pond lateral to the Paranapanema River and to identify the main controlling factors of its distribution. Considering the small size of the lacustrine ecosystem, we expected that seasonal variations of the benthic...

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Effect of salt stress on nutrient concentration, photosynthetic pigments, proline and foliar morphology of Salvinia auriculata Aubl. Efeito do estresse salino sobre as concentrações de nutrientes, pigmentos fotossintéticos, prolina e na morfologia foliar de Salvinia auriculata Aubl. - (2011)

Maria Angélica da Conceição Gomes, Marina Satika Suzuki, Maura da Cunha, Cristiane Ferrante Tullii

Volume: 23 - Issue: 2

Resumo. AIM: This study aimed to investigate the effects of NaCI and Na2So4 salts on Ca, CI, K, Mg N, P, S and Na content as well as on the content of photosynthetic pigments (chlorophyll-a, chlorophyll-b and carotenoids), proline content and on the foliar morphology of Salvinia auriculata Aubl. METHODS:...

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Effects of carbofuran and metsulfuron-methyl on the benthic macroinvertebrate community in flooded ricefields Efeito do carbofurano e metsulfuron-methyl sobre a comunidade de macroinvertebrados bentônicos de lavoura de arroz irrigado - (2011)

Joele Baumart, Marcelo Dalosto, Sandro Santos

Volume: 23 - Issue: 2

Resumo. AIM: This study evaluated the effect of the insecticide carbofuran and the herbicide metsulfuron-methyl on the abundance and diversity of benthic macroinvertebrates in a paddy ricefield. METHODS: To achieve this goal, two pesticide treatments [the insecticide carbofuran (IC) and the herbicide...

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Effects of eutrophication and Typha domingensis Pers on methanogenesis in tropical constructed wetland Efeitos da eutrofização e da Macrófita Aquática Typha domingensis Pers sobre a metanogênese em alagados construídos tropicais - (2011)

Joanna Maria da Cunha de Oliveira Santos Neves, Glauca Torres Aragon, Emmanoel Vieira da Silva Filho

Volume: 23 - Issue: 2

Resumo. AIM: Constructed wetlands (CWs) have shown to be an efficient way for removing nutrients from wastewaters. However, a negative effect is the emission of greenhouse gases (GHGs). Methane (CH4) is a GHG released from the organic matter degradation under anaerobic conditions by methanogenic...

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Effects of nutrients enrichment on algal communities: an experimental in mesocosms approach Efeitos do enriquecimento de nutrientes em comunidades de algas: uma abordagem experimental em mesocosmos - (2011)

Sirlene Aparecida Felisberto, Josimeire Aparecida Leandrini, Liliana Rodrigues

Volume: 23 - Issue: 2

Resumo. AIM: The effect of different concentrations of nutrients on algal communities living at the bottom of mesocosms was examined; METHODS: The experiment was carried out in the tributary of Rosana reservoir (Corvo river) from November 22nd to December 16th of 2003. Mesocosms were set up in...

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Influence of urbanisation on water quality in the basin of the upper Uruguay River in western Santa Catarina, Brazil Influência da urbanização sobre a qualidade da água na bacia do alto Rio Uruguai no oeste de Santa Catarina, Brasil - (2011)

Raquel Zeni Ternus, Gilza Maria de Souza-Franco, Maria Elena Krombauer Anselmini, Douglas João Carlos Mocellin, Jacir Dal Magro

Volume: 23 - Issue: 2

Resumo. AIM: The main objective of the study was to evaluate the limnological characteristics of rivers flowing through urban and rural areas in the upper Uruguay River basin in western Santa Catarina (SC), Brazil. METHODS: Sampling sites in the tributaries were selected along the longitudinal gradient...

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Patterns of species richness and composition of fish assemblages in streams of the Ivinhema River basin, Upper Paraná River Padrões de riqueza e composição de espécies das assembleias de peixes em riachos da bacia do rio Ivinhema, Alto Rio Paraná - (2011)

Yzel Rondon Súarez, Marcelo Maldonado de Souza, Fabiane Silva Ferreira, Maiane Jardim Pereira, Ediléia Amancio da Silva, Lidiani Queli Lubas Ximenes, Luciana Gonçalves de Azevedo, Olemar Cáceres Martins, Sidnei Eduardo Lima Júnior

Volume: 23 - Issue: 2

Resumo. AIM: The present study analyzed the spatial variation in fish species richness and composition in streams of the Ivinhema River basin, Upper Paraná basin, determining the relationship between local and regional descriptors of the fish assemblage organization; METHOD: From 2001 to 2011 we...

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Spatial evaluation of water quality in an urban reservoir (Billings Complex, southeastern Brazil) Avaliação espacial da qualidade da água em reservatório urbano (Complexo Billings, sudeste do Brasil) - (2011)

Simone Wengrat, Denise de Campos Bicudo

Volume: 23 - Issue: 2

Resumo. AIM: The study aimed at (a) contributing to a spatial evaluation of the Billings Complex water quality; (b) associating information on the geochemistry of the surface sediments; and (c) providing, based on previous studies, a temporal evaluation of the Complex's water quality since the...

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Application of the biotic index IBE-IOC for water quality assessment in wadeable streams in south-east Brazil Uso do índice biótico IBE-IOC para a avaliação da qualidade da água de riachos no sudeste do Brasil - (2011)

Riccardo Mugnai, Daniel Forsin Buss, Renata Bley Oliveira, Cristiane Sanfins, Alcimar do Lago Carvalho, Darcilio Fernandes Baptista

Volume: 23 - Issue: 1

Resumo. AIM: This work presents the results of the first water quality assessment using the biotic index Índice Biótico Estendido - Instituto Oswaldo Cruz (IBE-IOC) for 1st to 4th order streams in the Serra dos Órgãos region, Rio de Janeiro State, Brazil. The aims were to...

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Effects of daily changes in environmental factors on the abundance and richness of Odonata Efeitos das mudanças diárias dos fatores ambientais sobre a abundância e a riqueza de Odonata - (2011)

João Ânderson Fulan, Raoul Henry, Rosemary Cristina Souza Davanso

Volume: 23 - Issue: 1

Resumo. AIM: The aim of this work was to investigate the effects of daily changes in surface water abiotic factors on the abundance of Odonata larvae and the genus richness in a lateral lake isolated from a tropical river during the nycthemeral cycle in dry and wet seasons; METHODS: Macrophytes were...

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Effects of nitrate enrichment on leaf litter decomposition Efeitos do enriquecimento por nitrato sobre a decomposição de detritos foliares - (2011)

Alan Mosele Tonin, Luiz Ubiratan Hepp

Volume: 23 - Issue: 1

Resumo. AIM: This study aimed to determine the effects of nitrate enrichment on leaf decomposition process and the kinetic parameters of decomposition model; METHODS: Samples of water from a first-order stream and senescent leaves of the native tree species Campomanesia xanthocarpa O. Berg (Myrtaceae)...

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Inorganic carbon shortage may limit the development of submersed macrophytes in habitats of the Paraná River basin Baixas concentrações de carbono inorgânico podem limitar o desenvolvimento de macrófitas submersas em habitats do alto rio Paraná - (2011)

Aline de Freitas, Sidinei Magela Thomaz

Volume: 23 - Issue: 1

Resumo. AIM: In this investigation we carried out an experiment to assess whether the growth of Egeria najas and E. densa (two rooted submersed Hydrocharitacea, native to South America) are limited by inorganic carbon or not; METHODS: We measured the early plant growth in 3 L microcosms with alkalinities...

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Leaf degradation of Salix humboldtiana Willd: (Salicaceae) and invertebrate colonization in a subtropical lake (Brazil) Degradação foliar de Salix humboldtiana Willd: (Salicaceae) e colonização por invertebrados em um lago subtropical (Brasil) - (2011)

Franko Telöken, Edélti Faria Albertoni, Cleber Palma-Silva

Volume: 23 - Issue: 1

Resumo. AIM: To evaluate leaf degradation and invertebrate colonization of Salix humboldtiana Willd. in a subtropical shallow lake on the coastal plain of Rio Grande do Sul, Brazil; METHODS: Litter bags containing 6.85 g of leaves were incubated in the superficial layer of sediment in the littoral region...

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Limnological characterization of floodplain lakes in Mamirauá Sustainable Development Reserve, Central Amazon (Amazonas State, Brazil) Caracterização limnológica dos lagos da planície de inundação na Reserva de Desenvolvimento Sustentável Mamirauá, Amazônia Central (Estado do Amazonas, Brasil) - (2011)

Adriana Gomes Affonso, Helder Lima de Queiroz, Evlyn Márcia Leão de Moraes Novo

Volume: 23 - Issue: 1

Resumo. AIM: This paper examines the spatial and temporal variation of limnological characteristics of floodplain lakes in the Solimões and Japurá confluence, an undisturbed region - the Mamirauá Sustainable Development Reserve (MSDR); METHODS: We analyzed surface temperature,...

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Method for hatching resting eggs from tropical zooplankton: effects of drying or exposing to low temperatures before incubation Método para a eclosão de ovos de resistência do zooplâncton tropical: efeitos da seca ou exposição a baixas temperaturas antes da incubação - (2011)

Jayme Magalhães Santangelo, Luciana Rabelo Araújo, Francisco de Assis Esteves, Marina Manca, Reinaldo Luiz Bozelli

Volume: 23 - Issue: 1

Resumo. AIM: In this study we tested the effects of drying or refrigerating (4 °C) cladoceran resting eggs from a tropical aquatic system on the hatching rates and time to hatching, in order to determine what conditions should or should not be applied to break dormancy in tropical cladocerans;...

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Population dynamics of Moina minuta Hansen (1899), Ceriodaphnia cornuta Sars (1886), and Diaphanosoma spinulosum Herbst (1967) (Crustacea: Branchiopoda) in different nutrients (N and P) concentration ranges Dinâmica populacional de Moina minuta Hansen (1899), Ceriodaphnia cornuta Sars (1886) e Diaphanosoma spinulosum Herbst (1967) (Crustacea: Branchiopoda) em diferentes faixas de concentração de nutrientes (N e P) - (2011)

Ana Carolina Brito Vieira, Ana Maria Alves Medeiros, Leonardo Leôncio Ribeiro, Maria Cristina Crispim

Volume: 23 - Issue: 1

Resumo. AIM: Aquatic environments of semi-arid regions are subject to changes in water quality and volume due to short and irregular rain seasons. Consequently, zooplankton composition changes in association to fluctuations in the trophic degree. To comprehend these processes, this study analyzed the...

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Population structure, feeding and reproductive aspects of Serrapinnus heterodon (Characidae, Cheirodontinae) in a Mogi Guaçu reservoir (SP), upper Paraná River basin Estrutura populacional, alimentação e reprodução do lambari-prata Serrapinnus heterodon (Characidae, Cheirodontinae) em um reservatório do rio Mogi Guaçu (SP), bacia do alto rio Paraná - (2011)

Cristina da Silva Gonçalves, Ursulla Pereira Souza, Francisco Manoel de Souza Braga

Volume: 23 - Issue: 1

Resumo. AIM: In this report, we describe the population structure, feeding and reproductive aspects of the cheirodontine Serrapinnus heterodon collected in a reservoir of a small hydro power of Mogi Guaçu River (SP); METHODS: Specimens were caught bimonthly between August 2005 and July 2006 near...

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Population structure, reproductive biology and feeding of Astyanax fasciatus (Cuvier, 1819) in an Upper Paraná River tributary, Misiones, Argentina Estrutura populacional, biologia reprodutiva e alimentação de Astyanax fasciatus (Cuvier, 1819) em um tributário do alto Rio Paraná, Misiones, Argentina - (2011)

Lourdes María Hirt, Patricia Raquel Araya, Silvia Alicia Flores

Volume: 23 - Issue: 1

Resumo. AIM: The genus Astyanax is one of the richest in number of species and has one of the widest geographical distributions in Argentina, being possible to find in nine ichthyogeographic ecoregions. The aim of the present work was to analyze the population structure of Astyanax fasciatus in the...

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Vertical distribution of phytoplankton functional groups in a tropical shallow lake: driving forces on a diel scale Distribuição vertical de grupos funcionais fitoplanctônicos em um lago tropical raso: forças direcionadoras em escala nictemeral - (2011)

Luciana Gomes Barbosa, Paulina Maria Maia Barbosa, Francisco Antonio Rodrigues Barbosa

Volume: 23 - Issue: 1

Resumo. AIM: This study analyzed the vertical distribution of phytoplankton functional groups in two diel cycles in a warm monomictic shallow tropical lake; METHODS: Sampling of the abiotic variables, phytoplankton and zooplankton communities was performed at intervals of 3 hours over 24 hours in...

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Application of a non-destructive method to determine biomass in Pontederiaceae Aplicação de método não destrutivo para determinação de biomassa de Pontederiaceae - (2010)

Cátia Viviane Gonçalves, Albano Schwarzbold, André Jasper, Marlon Castro Vasconcelos

Volume: 22 - Issue: 4

Resumo. AIM: The aim of the present study was to estimate Eichhornia crassipes biomass by a non-destructive method that uses allometric measurements of foliar structures; METHODS: Aquatic macrophytes collected at different growth in a wetland were allometrically measured as (a) limbo length and width (b)...

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Bioassay using Daphnia magna Straus, 1820 to evaluate the sediment of Caí River (Rio Grande do Sul, Brazil) Bioensaios utilizando Daphnia magna Straus, 1820 na avaliação do sedimento do rio Caí (Rio Grande do Sul, Brasil) - (2010)

Nara Regina Terra, Ilda Rosa Feiden, Fabiane Lucheta, Silvana Pereira Gonçalves, Juliana Schons Gularte

Volume: 22 - Issue: 4

Resumo. AIM: The Caí River is one of the five that form the Guaiba Lake Hydrographic Basin. It is used for public water supply in the capital of Rio Grande do Sul; METHODS: Sediment samples for toxicity test (21 days) with Daphnia magna were taken from four sites between the middle and upper...

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Calibration of QUAL2K model in Brazilian micro watershed: effects of the land use on water quality Calibração do modelo QUAL2K em uma micro bacia brasileira: efeitos do uso e ocupação do solo na qualidade da água - (2010)

Flávia Bottino, Ive Ciola Ferraz, Eduardo Mario Mendiondo, Maria do Carmo Calijuri

Volume: 22 - Issue: 4

Resumo. AIM: This study aimed to evaluate the water quality of Canha River micro watershed (Ribeira de Iguape Valley, São Paulo State, Brazil) and to calibrate the QUAL2K model with field data; METHODS: Five variables of water quality were analyzed (water temperature, dissolved oxygen, pH,...

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Diurnal dynamic of inorganic carbon and oxygen dissolved in a Nile tilapia (Oreochromis niloticus Linnaeus, 1758) fish pond, São Paulo, Brasil Dinâmica diurna das formas de carbono inorgânico e oxigênio dissolvido em viveiro de tilápias do Nilo (Oreochromis niloticus Linnaeus, 1758), São Paulo, Brasil - (2010)

Claudinei José Rodrigues, Cacilda Thais Janson Mercante, Clovis Ferreira do Carmo, Andréa Tucci, João Alexandre Savilo Osti, Ariane Carolina Di Genaro

Volume: 22 - Issue: 4

Resumo. Natural waters may play the role of sinks or carbon dioxide (CO2) emitters, depending on the physicochemical characteristics of the system (diffusion and reaction of this gas into water) as well as on the pH, and the primary production of micro-organisms as a result of the consumption of such...

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Evaluation of the Gravataí River sediment quality (Rio Grande do Sul- Brazil) using Daphnia magna (Straus, 1820) as the test-organism for toxicity assays Avaliação da qualidade dos sedimentos do rio Gravataí (Rio Grande do Sul - Brasil) a partir de testes de toxicidade utilizando Daphnia magna (Straus, 1820) como organismo-teste - (2010)

Fabiane Lucheta, Ilda Rosa Feiden, Silvana Pereira Gonçalves, Juliana Schons Gularte, Nara Regina Terra

Volume: 22 - Issue: 4

Resumo. AIM: Persistent pollutants released to riverbeds return to the trophic system, damaging living organisms thereof. Ecotoxicological assays express the effect of environmental interactions with organisms found there. Assays were performed with microcrustacean Daphnia magna (Straus, 1820) in...

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Influence of a waterfall over richness and similarity in adjoining pools of an Atlantic Rainforest stream Influência de uma queda d'água sobre a riqueza e a similaridade de dois remansos em um rio da Mata Atlântica - (2010)

Célio Roberto Jönck, José Marcelo Rocha Aranha

Volume: 22 - Issue: 4

Resumo. AIM: The main goal of the study was to determine the effect of the Morato Fall in the richness and composition of the aquatic animal community; METHODS: We compared faunal richness and similarity in four substrate samples from two pools separated by a waterfall in the Morato River, southern...

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Primary productivity of the phytoplankton in a tropical Brazilian shallow lake: experiments in the lake and in mesocosms Produtividade primária em um lago tropical raso brasileiro: experimentos no lago e em mesocosmos - (2010)

Eliana Garcia Feresin, Marlene Sofia Arcifa, Lúcia Helena Sampaio da Silva, André Luiz Henríques Esguícero

Volume: 22 - Issue: 4

Resumo. AIM: To evaluate the primary productivity of the phytoplankton in the Lake Monte Alegre, southeastern Brazil, and the factors that influence its fluctuations, experiments were carried out in the lake and in mesocosm; METHODS: Primary productivity rates were measured using the 14C technique, in...

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Seasonal variability of periphyton nutrient status and biomass on artificial and natural substrates in a tropical mesotrophic reservoir Variação sazonal do estado nutricional e da biomassa do perifíton em substrato artificial e natural em um reservatório tropical mesotrófico - (2010)

Carla Ferragut, Alexandre Ferreira Rodello, Carlos Eduardo de Mattos Bicudo

Volume: 22 - Issue: 4

Resumo. AIM: Study aimed at evaluating the periphytic community seasonal variation, nutrient status and biomass on artificial and natural (Nymphaea spp., Utricularia foliosa Linnaeus) substrates at a shallow mesotrophic reservoir (Ninféias Reservoir) located in the Parque Estadual das Fontes do...

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Spatial distribution and functional feeding groups of aquatic insect communities in Serra da Bocaina streams, southeastern Brazil Distribuição espacial e categorização funcional trófica de comunidades de insetos aquáticos em rios na Serra da Bocaina, Sudeste Brasil - (2010)

Ana Lucia Henriques de Oliveira, Jorge Luiz Nessimian

Volume: 22 - Issue: 4

Resumo. AIM: The aim of this paper was to study the spatial distribution and functional feeding structure of aquatic insect communities of 18 streams at different altitudes in Mambucaba River Basin, Serra da Bocaina, Southeastern Brazil; METHODS: Samples were collected in two consecutive dry periods...

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Temporal variability of the bivalve Erodona mactroides BOSC, 1802 during and after the El Niño phenomenon (2002/2003) in a subtropical lagoon, southern Brazil Variabilidade temporal do bivalve Erodona mactroides BOSC, 1802 durante e após o fenômeno El Niño (2002/2003) em uma laguna subtropical, sul do Brasil - (2010)

Leonir André Colling, Carlos Emilio Bemvenuti, Raphael Mathias Pinotti

Volume: 22 - Issue: 4

Resumo. AIM: The aim of this work was to study the relationships between temporal variability of Erodona mactroides and abiotic parameters of the water column and the substrate in a shallow embayment of the Patos Lagoon estuarine region in southern Brazil; METHODS: Samples were taken with a PVC corer (10...

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Top-down control in a tropical shallow lake of Northern Pantanal, Brazil Controle descendente em um lago tropical raso do Pantanal Norte, Brasil - (2010)

Roberto de Moraes Lima Silveira, Leide Laura Almeida Ribeiro de Paiva, Janielly Carvalho Camargo

Volume: 22 - Issue: 4

Resumo. AIM: To test the effect of fish exclusion over zooplankton and phytoplankton in a shallow lake in the floodplains of the Cuiabá River in Brazil's Pantanal; METHODS: Fishes and two classes of zooplankton sizes were excluded using mesocosms (100 µm and 200 µm mesh openings)....

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Water quality prediction using the QUAL2Kw model in a small karstic watershed in Brazil Predição da qualidade da água através do modelo QUAL2Kw numa pequena bacia hidrográfica cárstica brasileira - (2010)

Rodrigo de Arruda Camargo, Maria Lúcia Calijuri, Aníbal da Fonseca Santiago, Eduardo de Aguiar de Couto, Marcos Dornelas Freitas Machado e Silva

Volume: 22 - Issue: 4

Resumo. AIM: The Tancredo Neves International Airport (TNIA) complex is situated in Brazil's Fidalgo watershed. Since its construction, the TNIA complex has attracted urban development, leading to expansion of the complex and occupation of the surrounding area. However, this area lacks basic...

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Assessment of Oriçanga and Itupeva rivers water quality at the Pardo-Mogi watershed (São Paulo State, Brazil) Avaliação da qualidade da água dos rios Oriçanga e Itupeva na bacia dos rios Pardo-Mogi (Estado de São Paulo, Brasil) - (2010)

Mariana Silveira-Guerra Moura e Silva, Julio Ferraz de Queiroz, Roberto Cesnik, José Maria Guzman Ferraz, Jener Fernandes Moraes

Volume: 22 - Issue: 3

Resumo. AIMS: This study aimed to assess the impacts of anthropic activities at four sites of two rivers from the Mogi-Guaçu watershed in São Paulo State, Brazil; METHODS: Sites were classified according to their environmental integrity, based on the index developed by Callisto et al....

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Chironomidae (Diptera) community structure in two subsystems with different states of conservation in a floodplain of southern Brazil Estrutura da comunidade de Chironomidae (Diptera) em dois subsistemas em diferentes estados de conservação de uma planície de inundação do sul do Brasil - (2010)

Gisele Cristina Rosin, Danielle Paula de Oliveira Mangarotti, Alice Michiyo Takeda

Volume: 22 - Issue: 3

Resumo. AIM: Our study aimed to compare the composition, distribution, diversity, abundance and dominance of Chironomidae in two subsystems of the Upper Paraná River floodplain, with different levels of conservation. We expected to find the highest values of diversity and lowest dominance of taxa...

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Determinants of beta diversity: the relative importance of environmental and spatial processes in structuring phytoplankton communities in an Amazonian floodplain Determinantes da diversidade beta: a importância relativa de processos ambientais e espaciais na estrutura de comunidades fitoplanctônicas de uma planície de inundação amazônica - (2010)

Ina de Souza Nogueira, João Carlos Nabout, Maria do Socorro Rodrigues Ibañez, Laurence Maurice Bourgoin

Volume: 22 - Issue: 3

Resumo. AIM: Beta diversity is defined as the change in species composition along environmental gradients, and in the present study, we investigated the influence of local (i.e., environmental) and regional (i.e., dispersal) factors in community structure. The aims of this study were to evaluate the beta...

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Evaluation of the sampling methods applied to phycoperiphyton studies in the Ratones River estuary, Brazil Avaliação dos métodos de coleta aplicados no estudo do ficoperifíton no estuário do rio Ratones, SC, Brasil - (2010)

Bianca Vettorato, Roselane Laudares-Silva, Dávia Talgatti, Mariângela Menezes

Volume: 22 - Issue: 3

Resumo. AIM: The present study aimed on testing the efficiency of four sampling methods for identification and quantification applied in studies on the biodiversity and spatial-temporal distribution of the phycoperiphyton in the Ratones River estuary; METHODS: The sampling were carried out in three...

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Occurrence of Kellicottia bostoniensis (Rousselet, 1908) and Mesocyclops ogunnus Onabamiro, 1957 in lakes of the Middle River Doce, MG, Brazil Ocorrência de Kellicottia bostoniensis (Rousselet, 1908) e Mesocyclops ogunnus Onabamiro, 1957 em lagos do Médio Rio Doce, MG - (2010)

Raul Soares Peixoto, Luciana Pena Mello Brandão, Carla de Fátima Valadares, Paulina Maria Maia Barbosa

Volume: 22 - Issue: 3

Resumo. The presence of the two exotic zooplankton species (Kellicottia bostoniensis and Mesocyclops ogunnus) in lakes of the Middle River Doce is discussed in the present work. K. bostoniensis was registered in Lakes Jacaré, Carioca and Águas Claras while M. ogunnus was restricted to the...

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Seasonal phytoplankton response to increased temperature and phosphorus inputs in a freshwater coastal lagoon, Southern Brazil: a microcosm bioassay Resposta sazonal do fitoplâncton ao aumento de temperatura e aporte de fósforo em uma lagoa costeira de água doce no sul do Brasil: um bioensaio em microcosmo - (2010)

Mariana Coutinho Hennemann, Mauricio Mello Petrucio

Volume: 22 - Issue: 3

Resumo. AIM: the present study aimed at assessing the response of phytoplankton biomass (as chlorophyll-a) to simulated conditions of increased water temperature and phosphorus (P) inputs in Peri lagoon, a subtropical coastal lagoon dominated by Cylindrospermopsis raciborskii most of the year; METHODS:...

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Serial discontinuity along the Descoberto River Basin, Central Brazil Descontinuidade serial ao longo da bacia do rio Descoberto, Brasil Central - (2010)

Weliton José da Silva, Sirlene Aparecida Felisberto, Claudia Padovesi Fonseca, Maria das Graças Machado de Souza

Volume: 22 - Issue: 3

Resumo. AIM: The Descoberto Basin was studied as a discontinuous ecological system through one seasonal cycle (about one year), at 13 sampling sites; METHODS: The connectivity was analyzed in relation to environmental and limnological characteristics along the length of the Descoberto River, and the...

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Seston fluxes in the dam of a Colombian tropical reservoir Fluxos de seston na barragem de um reservatório tropical Colombiano - (2010)

Yimmy Montoya Moreno, John Jairo Ramirez

Volume: 22 - Issue: 3

Resumo. AIM: Quantify sedimentation rates in Rio Grande II reservoir, his temporal fluctuation, and the degree of mineralization of the material that reaches the sediment; METHODS: A system of five sedimentation traps was used to evaluate temporal variability of seston flux and the total sedimentation in...

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Spatial and temporal variation of Peridinium umbonatum F. Stein, 1883 (Dinophyceae) and its relationship with total phytoplankton of a shallow, oligotrophic lake in central Brazil (Lagoon Bonita, Distrito Federal) Variação especial e temporal de Peridinium umbonatum F. Stein, 1883 (Dinophyceae) e sua relação com o fitoplâncton total de uma lagoa rasa e oligotrófica no Brasil Central (Lagoa Bonita, Distrito Federal) - (2010)

Patrícia Pereira Gomes, Maria do Socorro Rodrigues Ibañez, June Springer de Freitas

Volume: 22 - Issue: 3

Resumo. AIM: The main goal of this study was to investigate the temporal and spatial distribution of Peridinium umbonatum and its relationship with the physical and chemical water variables of the pelagic and littoral zones of Lagoon Bonita, located in Brasília, Distrito Federal; METHODS: Samples...

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Structure and distribution of Hydrachnidia (Parasitengona-Acari) in the sub-basin of the Grande River (Superior Basin of Quinto River. San Luis-Argentina) Estrutura e distribuição dos Hidracáridos (Parasitengona-Acari) na Subcuenca do Rio Grande (Conta Superior do Rio Quinto. San Luis-Argentina) - (2010)

Carlos Raul Quiroga, Adriana Vallania, Beatriz Elena Rosso de Ferradás

Volume: 22 - Issue: 3

Resumo. AIM: The purpose of this work was to determine genera diversity, structural attributes and distribution of the Hydrachnidia assemblages and their possible influences with certain abiotic parameters along the sub-basin of the Grande River, a 6th order stream in the province of San Luis; METHODS:...

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Structure of macroinvertebrate communities in riffles of a Neotropical karst stream in the wet and dry seasons Estrutura das comunidades de macroinvertebrados em corredeiras de um riacho cárstico Neotropical nas estações seca e chuvosa - (2010)

Karina Ocampo Righi-Cavallaro, Kennedy Francis Roche, Otávio Froehlich, Marcel Rodrigo Cavallaro

Volume: 22 - Issue: 3

Resumo. AIM: Our study evaluated the effects of physical and chemical variables and seasonality on diversity and structure of the macroinvertebrate fauna in riffles of a Neotropical chalk stream; METHODS: Sampling was performed during the dry (September 2003) and rainy (March 2004) seasons, in five...

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Which is the best environment for the development of the early life stages of fish during the dry season? - (2010)

André Luiz Henríques Esguícero, Marlene Sofia Arcifa

Volume: 22 - Issue: 3

Resumo. AIM: The main objective of this study was to investigate the quality of habitats for early life stages of fish in the Jacaré-Guaçu River, during the dry phase; METHODS: For assessing the quality of the habitats for the development of early life stages, the relative condition factor...

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Which is the best environment for the development of the early life stages of fish during the dry season? Qual o melhor ambiente para o desenvolvimento das fases jovens de peixes durante a estação seca? - (2010)

André Luiz Henríques Esguícero, Marlene Sofia Arcifa

Volume: 22 - Issue: 3

Resumo. AIM: The main objective of this study was to investigate the quality of habitats for early life stages of fish in the Jacaré-Guaçu River, during the dry phase; METHODS: For assessing the quality of the habitats for the development of early life stages, the relative condition factor...

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Aquatic herbaceous plants of the Amazon floodplains: state of the art and research needed Herbáceas aquáticas das áreas alagáveis amazônicas: estado da arte e estudos necessários - (2010)

Maria Teresa Fernandez Piedade, Wolfgang Junk, Sammya Agra D'Ângelo, Florian Wittmann, Jochen Schöngart, Keillah Mara do Nascimento Barbosa, Aline Lopes

Volume: 22 - Issue: 2

Resumo. The Amazonian wetlands cover a vast area subject to a monomodal flood pulse with an annual amplitude averaging 10 m, which defines an aquatic phase and a terrestrial phase of great biological importance. According to the geological origin and the catchment areas, the physical and chemical...

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Aquatic macrophytes drive sediment stoichiometry and the suspended particulate organic carbon composition of a tropical coastal lagoon Macrófitas aquáticas determinam a estequiometria do sedimento e a composição do carbono orgânico particulado em suspensão de uma lagoa costeira tropical - (2010)

Cláudio Cardoso Marinho, Frederico Meirelles-Pereira, Anderson da Rocha Gripp, Camilla de Carvalho Guimarães, Francisco de Assis Esteves, Reinaldo Luiz Bozelli

Volume: 22 - Issue: 2

Resumo. AIM: This research aimed to evaluate (1) the influence of the aquatic macrophytes Typha domingensis Pers., Eleocharis interstincta (Vahl) Roem. & Schult. (emergent) and Potamogeton stenostachys K. Schum. (submersed) on sediment stoichiometry and (2) the contribution of these aquatic...

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Aquatic macrophytes in natural and managed wetlands of Rio Grande do Sul State, Southern Brazil Macrófitas aquáticas em áreas úmidas naturais e manejadas do Rio Grande do Sul, sul do Brasil - (2010)

Ana Silvia Rolon, Henrique Flores Homem, Leonardo Maltchik

Volume: 22 - Issue: 2

Resumo. AIM: This study gathers the main results obtained from studies regarding dynamic of aquatic macrophyte community in natural and managed wetlands of Southern Brazil. We analyzed the aquatic macrophytes diversity in wetlands of Southern Brazil, the environmental factors that determine the structure...

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Decomposition of aquatic macrophytes from Cantá stream (Roraima, Brazil): kinetics approach Decomposição de macrófitas aquáticas do Igarapé do Cantá (Roraima, Brasil): aspectos cinéticos - (2010)

Marcela Bianchessi da Cunha-Santino, Lucilia Dias Pacobahyba, Irineu Bianchini Jr.

Volume: 22 - Issue: 2

Resumo. AIM: This study aimed at describing and comparing the kinetics of aerobic and anaerobic decomposition of Eleocharis interstincta, Nymphaea sp. and Montrichardia arborescens; METHODS: The samples of aquatic macrophytes and water were collected in the Cantá Stream (02° 49' 11"...

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Emissions of methane and carbon dioxide during anaerobic decomposition of aquatic macrophytes from a tropical lagoon (São Paulo, Brazil) Emissões de metano e dióxido de carbono da decomposição de macrófitas aquáticas de uma lagoa tropical (São Paulo, Brasil) - (2010)

Irineu Bianchini Jr., Marcela Bianchessi da Cunha-Santino, Francisco Romeiro, Alexandre Luccas Bitar

Volume: 22 - Issue: 2

Resumo. AIM: Massive accumulations of aquatic sedimentary plant are the main source of CH4 and CO2 emissions in floodplain lakes. To examine this connection, this study measured CO2 and CH4 formation during anaerobic decomposition of aquatic macrophytes from a floodplain lake; METHODS: Methane formation...

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Influence of aquaculture effluents on the growth of Salvinia molesta Influência do efluente de aqüicultura sobre o crescimento de Salvinia molesta - (2010)

Raquel Eduarda Trevisan Pistori, Gustavo Gonzaga Henry-Silva, José Francisco Vicente Biudes, Antonio Fernando Monteiro Camargo

Volume: 22 - Issue: 2

Resumo. OBJECTIVE: Aquaculture generates social and economic benefits, but also causes impacts on the environment. One of the major impacts is the release of untreated effluents into rivers, reservoirs, and lakes, which can affect aquatic populations and communities. In this study, we tested the...

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Limnological variables and nutritional content of submerged aquatic macrophytes in a tropical lagoon Variáveis limnológicas e conteúdo nutricional de macrófitas aquáticas submersas em uma lagoa tropical - (2010)

Bruno dos Santos Esteves, Marina Satika Suzuki

Volume: 22 - Issue: 2

Resumo. AIM: The aim of this study was to evaluate elemental composition (C, N and P) and carbohydrate and lipids content of aquatic macrophytes Egeria densa, Ceratophyllum demersum and Najas marina found in a lagoon of Norte Fluminense and relate these data to limnological parameters measured in the...

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Longitudinal distribution and seasonality of macroalgae in a subtropical stream impacted by organic pollution Distribuição longitudinal e sazonalidade de macroalgas em um riacho subtropical impactado por poluição orgânica - (2010)

Cleto Kaveski Peres, Ciro Cesar Zanini Branco, Rogério Antonio Krupek, José Celso Rocha

Volume: 22 - Issue: 2

Resumo. AIM: This study was carried out to assess longitudinal and temporal distribution and the effects of organic pollution on macroalgal communities in a subtropical stream; METHODS: The occurrence and percent cover of stream macroalgae were investigated during seasonal period in four sampling sites...

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Phosphorus, nitrogen, and carbon contents of macrophytes in lakes lateral to a tropical river (Paranapanema River, São Paulo, Brazil) Conteúdos de fósforo, nitrogênio e carbono de macrófitas em lagoas laterais a um rio tropical (Rio Paranapanema, São Paulo, Brasil) - (2010)

Mara Lucia Rodrigues Costa, Raoul Henry

Volume: 22 - Issue: 2

Resumo. AIM: The aim of this paper was to determine the phosphorus, nitrogen, and carbon contents of aquatic macrophyte species during two periods of the year in the land-water transition zone of three lakes lateral to the Paranapanema River (São Paulo); METHODS: Plants, water, and sediment were...

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Richness and distribution of aquatic macrophytes in Brazilian semi-arid aquatic ecosystems Riqueza e distribuição de macrófitas aquáticas em ecossistemas aquáticos do semi-árido brasileiro - (2010)

Gustavo Gonzaga Henry-Silva, Rodrigo Sávio Teixeira de Moura, Luciana Lúcia de Oliveira Dantas

Volume: 22 - Issue: 2

Resumo. AIM: The aim of this study was to evaluate the richness and distribution of the aquatic macrophytes in the basin of the Apodi/Mossoró River, in the semi-arid region (caatinga) of Rio Grande do Norte, Brazil; METHODS: A survey of the floristic composition of the aquatic macrophytes was made...

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The fate of Eichhornia azurea (Sw.) Kunth. detritus within a tropical reservoir O destino dos detritos de Eichhornia azurea (Sw.) Kunth. em um reservatório tropical - (2010)

Marcela Bianchessi da Cunha Santino, Irineu Bianchini Jr., Marco Hiroshi Okawa

Volume: 22 - Issue: 2

Resumo. AIM: This study is aimed at comparing the kinetics of decomposition of Eichhornia azurea and discussing the fate of its detritus; METHODS: The samples of aquatic macrophytes and water were collected in the Piraju Reservoir (São Paulo State, Brazil). The plant material was oven-dried and...

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The role of macrophytes in habitat structuring in aquatic ecosystems: methods of measurement, causes and consequences on animal assemblages' composition and biodiversity O papel das macrófitas na estruturação de habitat em ambientes aquáticos: métodos de medida, causas e consequências para a composição das assembléias animais e biodiversidade - (2010)

Sidinei Magela Thomaz, Eduardo Ribeiro da Cunha

Volume: 22 - Issue: 2

Resumo. Aquatic macrophytes play an important role in structuring communities in aquatic environments. These plants provide physical structure, increase habitat complexity and heterogeneity and affect various organisms like invertebrates, fishes and waterbirds. The complexity provided by macrophytes has...

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