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	Provedor de dados BABT (2) Autor Marques,David da Motta (2) Bonecker,Claúdia Costa (1) Cardoso,Luciana de Souza (1) Gazulha,Vanessa (1) Montú,Mônica (1) Palavra-chave Bloom (1) Hydrodynamics (1) Macrophytes (1) Phytoplankton (1) Pigment (1) Refuge (1) Shallow lake (1) Spatial distribution (1) Tropical zooplankton (1) Wind (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2011 (1) 2004 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The influence of hydrodynamics on the spatial and temporal variation of phytoplankton pigments in a large, sub-tropical coastal lake (Brazil) BABT Cardoso,Luciana de Souza; Marques,David da Motta. This study evaluated the spatial and temporal distribution of phytoplankton pigments in Itapeva Lake and its relationship with hydrodynamic aspects. Regarding spatial distribution, a decreasing N®S gradient was generally observed for the pigments, except in summer. This inversion observed during the summer was influenced by the predominant fetch (N-E). The horizontal heterogeneity was proved (ANOVA) for all seasons of the year, except spring. Spatially in spring, the vertical variance was much more significant (p<0.05) than the horizontal one. The sampling shifts presented a permanent degree of variability among the seasons of the year, showing the existence of a diurnal cycle in the concentration of chlorophyll a. This behavior was related to the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pigment; Phytoplankton; Shallow lake; Hydrodynamics; Wind; Bloom. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400013 Effects of natural banks of free-floating plants on zooplankton community in a shallow subtropical lake in Southern Brazil BABT Gazulha,Vanessa; Montú,Mônica; Marques,David da Motta; Bonecker,Claúdia Costa. The aim of this study was to test the effects of natural free-floating plants on zooplankton distribution in a shallow subtropical lake. First, the hypothesis that free-floating plants have an effect on physico-chemicals, leading to a decrease on nutrient availability and influencing the phytoplankton biomass and zooplankton community was tested. Second, the hypothesis that free-floating plants act as a refuge for zooplankton was tested. Three microhabitats were selected: free-floating plants, littoral area and open water. Results demonstrated that the effects of different microhabitats on phytoplankton biomass and physico-chemicals were not significant, indicating a weak influence of the plants. Zooplankton densities were higher in free-floating plants... Tipo: Info:eu-repo/semantics/article Palavras-chave: Macrophytes; Refuge; Spatial distribution; Tropical zooplankton. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400014 Registros recuperados: 2 Primeira ... 1 ... Última

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