Variação nictemeral da clorofila a, produção primária do fitoplâncton e fatores ambientais da região de Ubatuba (Lat. 23º30'S Long. 45º06'W)

Autores

  • C. Teixeira Universidade de São Paulo; Instituto Oceanográfico
  • S.A. Gaeta Universidade de São Paulo; Instituto Oceanográfico

DOI:

https://doi.org/10.1590/S1679-87591991000100002

Palavras-chave:

Fotossíntese, Clorofila a, Variação nictemeral, Produção primária, Fatores ambientais, Ubatuba^i1^

Resumo

A series of experiments with natural phytoplankton populations was carried out to study the diel variation of chlrophyll a, primary production and some environmental factors. Samples were collected from surface over a period of 24 hours and always from one fixed station located in Flamengo Inlet, Ubatuba region, southern Brazil The experiments were performed in situ and simulated conditions to verify the patterns of diel cycles of both biotic and abiotic factors. The results obtained showed that diel variations were markedly pronounced mainly in relation to primary production and chlorophyll a. Diel variations of biological factors seems to be due to exogenous and endogenous phenomena.

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Publicado

1991-01-01

Edição

Seção

Artigos

Como Citar

Variação nictemeral da clorofila a, produção primária do fitoplâncton e fatores ambientais da região de Ubatuba (Lat. 23º30’S Long. 45º06’W) . (1991). Boletim Do Instituto Oceanográfico, 39(1), 15-24. https://doi.org/10.1590/S1679-87591991000100002