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Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams
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Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams
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Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams
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Journal Article
Influence of land-use on structural and functional macroinvertebrate composition communities associated on detritus in Subtropical Atlantic Forest streams
2016
Overview
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 debris in streams with presence and absence of riparian vegetation and different land-uses in the drainage area. We used the litter bags approach. Results The taxonomic and functional composition invertebrate associated with leaf litter ranged between streams. In addition, streams with presence of vegetation showed less variation taxonomic and functional composition communities. Still, the density of shredders invertebrates were lower in streams without vegetation. Conclusions The riparian vegetation is an important environmental factor in the composition of invertebrates. However, the land-use throughout the drainage basin should be considered as relevant factor in structuring aquatic biota. Resumo Objetivo O objetivo deste estudo foi avaliar os efeitos de usos da terra em bacias de drenagem de riachos sobre a composição taxonômica e funcional das comunidades de invertebrados aquáticos associados a detritos foliares. Métodos Avaliamos a colonização de invertebrados em detritos de plantas incubadas em riachos com presença e ausência de vegetação ripária e diferentes usos da terra na área de drenagem. Utilizamos a abordagem de litter bags. Resultados A composição taxonômica e funcional da fauna de invertebrados associados aos detritos variou entre os riachos. Além disso, os riachos com presença de vegetação mostraram comunidades com menor variação taxonômica e funcional. Ainda, a densidade de invertebrados fragmentadores foi menor nos riachos sem vegetação. Conclusões A porcentagem de vegetação ripária é um fator ambiental importante na composição dos invertebrados. Porém, os usos da terra em toda a bacia de drenagem devem ser considerados como fatores relevantes na estruturação da biota aquática.
Publisher
Associação Brasileira de Limnologia
Subject
