当前位置： SCI文献检索 > MARINE POLLUTION BULLETIN期刊下所有文献 > Polycyclic aromatic hydrocarbons and changes in the trophic structure of polychaete assemblages in sediments of Todos os Santos Bay, Northeastern, Brazil.

Polycyclic aromatic hydrocarbons and changes in the trophic structure of polychaete assemblages in sediments of Todos os Santos Bay, Northeastern, Brazil.

Abstract：

:Polycyclic aromatic hydrocarbons (PAHs) and the trophic structure of polychaete assemblages were studied in sediments at 28 stations in Todos os Santos Bay. Total PAH concentrations varied from 8 to 4163 ng g(-1) dry weight. The indexes used for the determination of PAH origin suggested both pyrolytic and petrogenic sources. A total of 397 individuals of polychaetes was recorded which were classified in three trophic groups. The PCA ordination resulted in the formation of three groups of stations, Group I characterised by sandy sediments, low organic content, low total PAH concentration and percentage of potentially harmful PAH was dominated by subsurface deposit-feeders. The other two groups (IIa and IIb), showed similar percentages of silt and clay, however, Group IIb formed by those stations with high total organic carbon, total nitrogen, sulphur contents, high total PAH concentration and percentage of potentially harmful PAH was dominated by carnivores. Trophic changes could be explained by the level of exposure to PAH effects relative to differences in the life style and feeding strategies between deposit-feeders and carnivores.

journal_name

Mar Pollut Bull

journal_title

Marine pollution bulletin

authors

Venturini N,Tommasi LR

doi

10.1016/S0025-326X(03)00331-X

subject

Has Abstract

pub_date

2004-01-01 00:00:00

pages

97-107

issue

1-2

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(03)00331-X

journal_volume

48

pub_type

杂志文章

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