Structure and temporal persistence of a fish community in three streams from the Upper Tocantins River, GO

Authors

  • Jean Carlos Miranda Universidade do Estado do Rio de Janeiro, Departamento de Ecologia, Laboratório de Ecologia de Peixes
  • Rosana Mazzoni Universidade do Estado do Rio de Janeiro, Departamento de Ecologia, Laboratório de Ecologia de Peixes

Keywords:

Araguaia-Tocantins basin, stream-dwelling fishes, density, stability

Abstract

Three streams from the upper Tocantins basin were studied in order to describe community structure and temporal persistence of fish species composition. Fish densities of each stream were compared between them and with other streams from Neotropical, Austral and Holartic regions. Forty six species were registered but only 18 co-occurred in the three studied streams. Two streams presented similar species composition, but temporal variations of species densities differed among them. High persistence was registered to Água Boa and Cavalo streams whereas low persistence was registered to Acaba Saco stream. No significant differences were registered for species densities of each studied stream, nonetheless, Cavalo were that tending to support the highest fish densities. The values of fish density found in the present study were very similar to those found in other geographic regions such as Temperate and Tropical areas.

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Published

2009-12-01

How to Cite

Miranda, J. C., & Mazzoni, R. (2009). Structure and temporal persistence of a fish community in three streams from the Upper Tocantins River, GO. Biota Neotropica, 9(4). Retrieved from //www.biotaneotropica.org.br/BN/article/view/568

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