Data/hora: 10/06/2024 13:33:39

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Uso da taxocenose de peixes como indicadora de degradação ambiental no rio Paraíba do Sul, Rio de Janeiro, Brasil
Autores: | Araújo,Francisco Gerson.
Data: | 1998-01-01
Ano: | 1998
Palavras-chave: | Rio Paraíba do Sul; Integridade Biótica; Peixes; Poluição.
Resumo: | An adaptation of index of biotic integrity (IBI) was performed for the first time in Brazil at the Rio Paraíba do Sul, between Barra Mansa and Barra do Piraí, a very important extent of this river because of the high pollution levels, and for being the main abstraction source of Rio de Janeiro city water supply. A monthly standardised sampling programme, from March-1995 to February-1996, was carried out at four sites. Seines, casting nets and net trays were used for catching fishes. IBI was obtained by integrating 12 ecological and environmental attributes of fish taxocene, populations, and individual organisms to assess biological integrity based in Species Composition, Trophic Structure and Fish Condition. Overall, water quality was classified between poor and fair and an improvement was detected between the high polluted Barra Mansa site and the less polluted Barra do Piraí site, showing the capacity of restoration of the river over this 50 km. Seasonally, the best conditions were reached from March to August, and the worse, from September to February, when most aloctone materials are brought to the river.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000300016
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89131998000300016
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.41 n.3 1998
Fonte: | info:eu-repo/semantics/openAccess