Biblioteca Digital da UEM: Sistema Nou-Rau
Pgina Principal  Portugus   English  Español   Aumentar Texto  Texto Normal  Diminuir Texto
  Principal | Apresentao | Objetivos | Instrues Autores | Estatsticas | Outras Bibliotecas Digitais
  Sistema Integrado de Bibliotecas - SIB / UEM
Entrar | acessos | verso 1.1  
ndice
Pgina principal
Documentos
Novidades
Usurios

Aes
Consultar
Procurar
Exibir estatsticas

Procurar por:
Procura avanada

Dvidas e sugestes


Consultar: Artigo

Incio > Produo Cientfica do Nuplia/PEA > Artigo

Ttulo: Influence of the macrophyte Eichhornia azurea on fish assemblage of the Upper Paran River floodplain (Brazil)
Autor(es): AGOSTINHO, A.A.; THOMAZ, S.M.; GOMES, L.C.; BALTAR, S.L.S.M.A.
Palavras-chave [PT]:

Conservao. Diversidade. Peixe. Macrfita. Paran, Rio. Brasil.
Palavras-chave [EN]:
Conservation. Diversity. Fish. Macrophytes relationships. Neotropical region. Paran, River. Brazil.
Resumo:
Abstract: The architecture of aquatic macrophytes adds structural complexity to the littoral region. This increased habitat heterogeneity prompts greater diversity and stability of biotic communities. However, there are few studies that explore the ecological role of macrophytes in the Neotropical region. Then, the aim of this study was to determine spatial and diel influence of near-shore Eichhornia azurea stands on fish assemblage attributes and structure, in the Upper Paran River floodplain, considering a meso-habitat scale. To achieve this objective, fish were trapped in four stands of macrophytes, in three positions (middle and border of the stand and open area) with samplings taken at different times of the day (6 h, 12 h and 18 h). A total of 537 fish of 16 species were caught. Dissolved oxygen varied significantly among positions. Fish assemblage attributes (species richness, evenness and Shannon Diversity Index) also varied among positions. Fish assemblage structure (summarized by a detrended correspondence analysis) and size structure were strongly influenced by times of the day and positions. The patterns observed can be explained by factors such as oxygen concentration, food resource availability and predation, all influenced by macrophytes. We suggest that any strategy to manage fish diversity and fish stocks has to consider aquatic macrophytes.
Descrio:
AGOSTINHO, Angelo Antonio; THOMAZ, Sidinei Magela; GOMES, Luiz Carlos; BALTAR, Solma L.S.M.A. Influence of the macrophyte Eichhornia azurea on fish assemblage of the Upper Paran River floodplain (Brazil). Aquatic Ecology, Dordrecht, v.41, no.4, p.611-619, 2007.
Cdigo: 248
Informaes adicionais:
Published online: 3 July 2007

Responsavel: admin
Categoria: Aplicao
Formato: Documento PDF
Arquivo: 184-AE-Agostinho-etal.pdf
Tamanho: 262 Kb (268637 bytes)
Criado: 02-05-2008 10:06
Atualizado: 26-06-2008 15:19
Visitas: 1651
Downloads: 70

[Visualizar]  [Download]

Todo material disponvel neste sistema de propriedade e responsabilidade de seus autores.