Data/hora: 01/06/2024 07:25:51

Provedor de dados: | 57
País: | Brazil
Título: | Abundance of cladocerans in the littoral regions of two environments of the Upper Paraná River floodplain, Mato Grosso do Sul, Brazil
Autores: | ROSSA,D. C.; LANSAC-TÔHA,F. A.; BONECKER,C. C.; VELHO,L. F. M.
Data: | 2001-02-01
Ano: | 2001
Palavras-chave: | Cladocerans; Littoral; Floodplain; Tropical.
Resumo: | The abundance of cladocerans recorded in plankton samples from the littoral regions of two enviroments (Baía River and Guaraná lake), the Upper Paraná River floodplain and some limnological variables important in controlling their abundance were investigated at three sites in the lake and two in the river, from March/93 to January/94. Abundance was highest in the lake, chiefly during high water. Bosminidae dominated in both environments and hydrological periods (high and low water). Chydoridae were more important in the lake, and Sididae in the river. A higher number of Pearson's correlations significative (p &lt; 0.03) between the densities of the ten most important species and the limnological variables was observed in the river. This suggests that limnological variables are more important in controlling the abundance of cladocerans in the river. On the other hand, in the lake their abundance was probably associated with the physical structure of the environment, the abundance of aquatic macrophytes, and biotic relationships such as competition and predation.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100007
Editor: | Instituto Internacional de Ecologia
Relação: | 10.1590/S0034-71082001000100007
Formato: | text/html
Fonte: | Revista Brasileira de Biologia  v.61 n.1 2001
Fonte: | info:eu-repo/semantics/openAccess