학술논문

Assessment of plankton community and environmental conditions in São Sebastião Channel prior to the construction of a produced water outfall
Document Type
article
Source
Revista Brasileira de Oceanografia. January 1999 47(1)
Subject
Phytoplankton
Zooplankton
Nutrients
Suspended matter
BOD
Oil aod grease
Environmental diagnosis
São Sebastião Channel
Language
English
ISSN
1413-7739
Abstract
Plankton community and hydrological conditions were assessed as a part of ao environmental diagnosis in São Sebastião Channel, before the building of a submarine outfall of produced water from the oil maritime terminal of PETR08RÁS. Samples were collected in twenty oceanographic stations located in the oil terminal neighboring area, during the springtime of 1991. Oissolved inorganic nutrients and chlorophyll-a concentrations observed indicate an oligo-mesotrophic environment. Phenols and sulfides were absent, 800 values, except for three sampling points, were characteristic of unpolluted environments, although oil and grease were found in half of the sampled stations. Phytoplankton and zooplankton communities presented high diversity and evenness indices for the entire area. Phytoplankton was dominated by phytoflagel1àtes and zooplankton was dominated by copepods, mostly Paracalanus quasimodo. Plankton community composition was similar to that from adjacent regions under low anthropogenic influence.

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