期刊
MARINE POLLUTION BULLETIN
卷 89, 期 1-2, 页码 331-339出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.09.040
关键词
PCBs; Phytoplankton; Zooplankton; Bioaccumulation; Coastal; Bay of Marseille
资金
- IFREMER
- PACA (France)
- ONEMA (Office national de l'eau et des milieu aquatiques)
- AE-RMC (Agence de l'eau Rhone, Mediterranee, Corse)
PCB levels in plankton were investigated in the Bay of Marseille, Western Mediterranean Sea, between September 2010 and October 2011. Concentrations of PCB congeners (CB 18, CB 52, CB 101, CB 118, CB 138, CB 153, CB 180) were determined in three plankton size-classes (60-200, 200-500 and 500-1000 mu m) together with different parameters: chlorophyll content, plankton dry-weight biomass, carbon and nitrogen stable isotope ratios and plankton-community structure. The Sigma PCB7 concentrations ranged between 14.2 and 88.1 ng g(-1) d.w., for all size classes and all sampling periods. The results do not show the biomass dilution effect and indicate moderate but significant biomagnification with plankton trophic position estimated by delta N-15 signatures. Equilibrium with water phase may notably contribute in controlling the PCB levels in the plankton. More generally, presented results imply that PCB accumulation in the plankton is an effect of abiotic and trophic complex interactions in the Bay of Marseille. (C) 2014 Elsevier Ltd. All rights reserved.
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