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Influence of a Brazilian sewage outfall on the toxicity and contamination of adjacent sediments

Marine Pollution Bulletin

By:
, , , , , and
DOI:10.1016/j.marpolbul.2005.02.034

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Abstract

The submarine sewage outfall of Santos (SSOS) is situated in the Santos Bay (São Paulo, Brazil) and is potentially a significant source of contaminants to the adjacent marine ecosystem. The present study aimed to assess the influence of SSOS on the sediment toxicity and contamination at Santos Bay. At the disposal site, sediments tended to be finer, organically richer and exhibited higher levels of surfactants and metals, sometimes exceeding the “Threshold Effect Level” values. The SSOS influence was more evident toward the East, where the sediments exhibited higher levels of TOC, total S and metals during the summer 2000 sampling campaign. Sediment toxicity to amphipods was consistently detected in four of the five stations studied. Amphipod survival tended to correlate negatively to Hg, total N and % mud. This work provides evidence that the SSOS discharge affects the quality of sediments from Santos Bay, and that control procedures are warranted.

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Influence of a Brazilian sewage outfall on the toxicity and contamination of adjacent sediments
Series title:
Marine Pollution Bulletin
DOI:
10.1016/j.marpolbul.2005.02.034
Volume:
50
Issue:
8
Year Published:
2005
Language:
English
Publisher:
Elsevier
Contributing office(s):
Columbia Environmental Research Center
Description:
11 p.
First page:
875
Last page:
885
Online Only (Y/N):
N
Additional Online Files (Y/N):
N