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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Influence of water chemistry and environmental degradation on macroinvertebrate assemblages in a river basis in south-east Brazil.
Autores:  BUSS, D. F.
BAPTISTA, D. F.
SILVEIRA, M. P.
NESSIMIAN, J. L.
DORVILLÉ, L. F. M.
Data:  2006-09-28
Ano:  2002
Palavras-chave:  Fauna aquática
Bentos
Poluição da água
Impacto ambiental
Resumo:  Seven sites of the Guapimirim river basin were studied during three sampling periods based on the rain regime: end of wet season (May 1998), dry season (August 1998), and wet season (January 1999). Four substrates were collected at each site: sand, stony substrates, litter in pool areas and litter in riffle areas. Relationships between macroinvertebrate assemblages, water chemistry variables and environmental degradation were examined using canonical correspondence analysis (CCA). According to CCA, concentrations of dissolved oxygen and chloride, and the environmental degradation, measured by the Riparian Channel Environment index, exhibited the strongest relationship to macroinvertebrate assemblages. Overall, the loss of community diversity measured by the Shannon Index along the degradation gradient was observed. Some taxa were shown to be sensitive to water pollution, especially among Plecoptera, Trichoptera, Coleoptera and some Ephemeroptera, while others such as Simuliidae, Odonata and molluscs were tolerant to moderate levels of pollutants. The Chironomidae were the only group tolerant to a high level of pollutants and degradation.
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  6378

http://www.alice.cnptia.embrapa.br/alice/handle/doc/12944

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/163828/1/Buss-Influence-6378.pdf
Editor:  Hydrobiologia, The Hague, v. 481, p. 125-136, 2002.
Relação:  Embrapa Meio Ambiente - Artigo em periódico indexado (ALICE)
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