Chemical composition of phytoplankton from the estuaries of Eastern Amazonia
Phytoplankton is important bioindicator of chemical and biological modifications of natural ecosystems. The objective of this study was to determine the total chemical composition of the phytoplankton of the Pará and Mocajuba estuaries on the eastern coast of the Amazon region in the Brazilian state...
| Autor principal: | VILHENA, Maria do Perpétuo Socorro Progene |
|---|---|
| Outros Autores: | COSTA, Marcondes Lima da, BERRÊDO, José Francisco, PAIVA, Rosildo Santos, ALMEIDA, Pryscila Denise |
| Grau: | Artigo |
| Idioma: | eng |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia
2014
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/6107 http://dx.doi.org/10.1590/1809-4392201305244 |
| Resumo: |
|---|
|
Phytoplankton is important bioindicator of chemical and biological modifications of natural ecosystems. The objective of this study was to determine the total chemical composition of the phytoplankton of the Pará and Mocajuba estuaries on the eastern coast of the Amazon region in the Brazilian state of Pará. The chemical composition of the surface water, bottom sediments (total sample and bioavailable fraction), and the phytoplankton were determined by inductively coupled plasma optical emission spectrometry. Phytoplankton contained high concentrations of Ca, P, Mn, Fe, Zn, Al, Ba, and Pb. The phytoplankton of the Mocajuba estuary is rich in Fe (2,967-84,750 µg g-1), while those from the Pará is rich in Al (1,216-15,389 µgg-1), probably reflecting divergent anthropogenic inputs. Both samples indicated a high bioconcentration factor derived from both the water and the bioavailable fraction, reflecting the efficiency of these organisms in the concentration of metals. |