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Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River Biological Sciences
Zeni, Jaquelini Oliveira; Santos, Ana Cláudia; Carvalho, Fernando Rogério.
The presence of different mesohabitats in freshwater systems can support higher local and regional fish richness. Thus, their suppression by dam-building represents a real threat to aquatic biodiversity. Our aims were: (1) to survey the fish fauna in two different mesohabitats in lower Preto River: a riffle indirectly threatened by dam-building and a run with different physical structure; and (2) to analyze and compare the fish community structure in these different mesohabitats. Six samplings were made during one year in two reaches (R1 and R2). We conducted a ‘one way’ ANOSIM to assess the differences in fish community structure between R1 and R2. Fifty-three species were recorded, with the occurrence of Aphyocheirodon hemigrammus and Myleus tiete, two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecologia; Ictiofauna; Conservação conservation; Dam-building; Ichthyofauna; Riffles; Threatened species Ecologia.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27356
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