Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/20657
Title: Effects of Small Dams on the Benthic Community of Streams in an Atlantic Forest Area of Southeastern Brazil
Authors: Almeida, Erick Frota
Oliveira, Renata Bley
Mugnai, Riccardo
Nessimian, Jorge Luiz
Baptista, Darcílio Fernandes
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção Ambiental. Rio de Janeiro, RJ. Brasil / Universidade Federal do Rio de Janeiro. Museu Nacional. Programa de Pós-Graduação em Zoologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção Ambiental. Rio de Janeiro, RJ. Brasil / Universidade Federal do Rio de Janeiro. Programa de Pós-Graduação em Ecologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção Ambiental. Rio de Janeiro, RJ. Brasil / Fundação Oswaldo Cruz. Programa de Pós-Graduação em Biociências. Rio de Janeiro, RJ, Brasil.
Universidade Federal do Rio de Janeiro. Laboratório de Entomologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Avaliação e Promoção Ambiental. Rio de Janeiro, RJ. Brasil.
Abstract: We examined the effects of longitudinal discontinuity in small rivers, produced by the construction of small dams, on the macroinvertebrate communities in a biological reserve in southeastern Brazil. Two regulated streams were sampled in the rainy and dry seasons at three sites along the river. One site was upstream of the dam/abstraction and two were below the dam. Our results indicate that there was a difference in the communities between the dry and rainy periods even though water physicochemical parameters of the water were not significantly different. The biotic richness at sites 500 m below the dam were similar to those above the impoundment (control), indicating that the fauna recovered when the discharge values found before water abstraction were reestablished. We concluded that the dam did induce changes in the composition of benthic comunities, especially in the dry period. However, overall, the fauna seemed to be able to persist during periods when the flow was absent.
Keywords: dam
macroinvertebrates
river connectivity
Brazil
keywords: Barragem
Macroinvertebrados
Conectividade do rio
Brasil
Issue Date: 2009
Publisher: Wiley
Citation: ALMEIDA, Erick Frota; et al. Effects of Small Dams on the Benthic Community of Streams in an Atlantic Forest Area of Southeastern Brazil. Internat. Rev. Hydrobiol., v.94, n.2, p.179-193, 2009.
Copyright: open access
Appears in Collections:IOC - Artigos de Periódicos

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