<b>Influence of an artificial dam on the fish assemblage of a Neotropical stream

  • Dyego Leonardo Ferraz Caetano Universidade Estadual do Norte do Paraná / Universidade Estadual de Maringá
  • Rafael Rogério Rosa Universidade Estadual do Norte do Paraná / Universidade Estadual de Maringá
  • Verônica Rodrigues de Moraes Universidade Estadual do Norte do Paraná
  • Daniela Ribas Jané Universidade Estadual do Norte do Paraná
  • Alexandre Fernandes Oliveira da Silva Universidade Estadual do Norte do Paraná
Palavras-chave: conservation unit, geographical barrier, influence of anthropogenic factors, neotropical ichthyofauna, stream ecology

Resumo

The objective of this study was to evaluate the influence of a dam on the ecological parameters of the fish assemblages of a stream of second order of the upper Paraná River basin, southern Brazil. Samplings of abiotic data and ichthyofauna occurred quarterly between September 2012 and June 2013. Were collected 3,128 individuals in six orders, eight families and 13 species. The Cluster analysis (Jaccard) based on species composition indicated the separation of the sampling units into two groups, demonstrating the dissimilarity between upstream and downstream units. The artificial dam was characterized as a discontinuity factor for diversity patterns and ecological processes related to biota. Thus, this study has indications that the creation of dams can significantly affect the richness and abundance of fish species of small lotic systems, as streams, by modifying their environments.

 

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Biografia do Autor

Dyego Leonardo Ferraz Caetano, Universidade Estadual do Norte do Paraná / Universidade Estadual de Maringá

Doutorando em Biologia das Interações Orgânicas pelo Programa de Pós-Graduação em Biologia Comparada da Universidade Estadual de Maringá.

Professor colaborador do Colegiado de Ciências Biológicas da Universidade Estadual do Norte do Paraná.

Publicado
2016-12-08
Como Citar
Caetano, D. L. F., Rosa, R. R., Moraes, V. R. de, Jané, D. R., & Silva, A. F. O. da. (2016). <b&gt;Influence of an artificial dam on the fish assemblage of a Neotropical stream. Acta Scientiarum. Biological Sciences, 38(3), 305-311. https://doi.org/10.4025/actascibiolsci.v38i3.31943
Seção
Ecologia e Limnologia

 

0.6
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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus