Data/hora: 01/06/2024 03:48:39

Provedor de dados: | 52
País: | Brazil
Título: | The influence of hydrodynamics on the spatial and temporal variation of phytoplankton pigments in a large, sub-tropical coastal lake (Brazil)
Autores: | Cardoso,Luciana de Souza; Marques,David da Motta.
Data: | 2004-08-01
Ano: | 2004
Palavras-chave: | Pigment; Phytoplankton; Shallow lake; Hydrodynamics; Wind; Bloom.
Resumo: | 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&lt;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 fetch, mainly from the NE and SW quadrants, disturbing the system because it is a shallow lake. This confirmed the influence of the Itapeva Lake's hydrodynamic regime on the spatial-temporal distribution of the phytoplankton pigments.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400013
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132004000400013
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.47 n.4 2004
Fonte: | info:eu-repo/semantics/openAccess