Environmental integrity and damselfly species composition in Amazonian streams at the "arc of deforestation" region, Mato Grosso, Brazil - (2014)
Acessos: 34
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 influence of environmental variables on species composition. METHODS: We collected in transects of 100 m and used ordination (PCoA) and simple linear regression. RESULTS: Species composition was strongly influenced by the environmental quality of sites, and the best model to explain species composition included variables related to channel morphology. CONCLUSIONS: These results are connected to the environmental homogenization and loss of environmental integrity as a result of extensive agricultural practices which alter stream communities of dragonflies in this region.
Keywords: alteração ambiental, recursos hídricos, bioindicador, Amazônia
Idioma: English
Registro: 2024-08-17 14:39:41
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