Integridade ambiental e composição de espécies de Zygoptera em igarapés da Amazônia na região do “arco do desmatamento”, Mato Grosso, Brasil

Abstract

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.