Patterns of trace metal bioaccumulation and trophic transfer in a phytoplankton-zooplankton-small pelagic fish marine food web

MARINE POLLUTION BULLETIN

卷:146

Article

Chouvelon, Tiphaine¹  Strady, Emilie²  Harmelin-Vivien, Mireille²  Radakovitch, Olivier^3,4  Brach-Papa, Christophe⁵  Crochet, Sylvette¹  Knoery, Joel¹  Rozuel, Emmanuelle¹  Thomas, Bastien¹  Tronczynski, Jacek⁶  Chiffoleau, Jean-Francois⁶ 

[1] Ifremer, Unite Biogeochim & Ecotoxicol, Lab Biogeochim Contaminants Metall, Rue Ille dYeu,BP 21105, F-44311 Nantes 03, France

[2] Aix Marseille Univ, Univ Toulon, MIO, CNRS IRD, Marseille, France

[3] Aix Marseille Univ, Coll France, CEREGE, CNRS,IRD,INRA, F-13617 Aix En Provence, France

[4] IRSN, PSE ENV SRTE LRTA, BP3, F-13115 St Paul Les Durance, France

[5] Ifremer, Unite Littoral, Lab Environm Ressources Prov Azur Corse, CS 20330, F-83507 La Seyne Sur Mer, France

[6] Ifremer, Unite Biogeochim & Ecotoxicol, Rue Ile dYeu,BP 21105, F-44311 Nantes 03, France

关键词: Inorganic elements;    Seawater;    Size-classed plankton;    Sardina pilchardus;    Engraulis encrasicolus;    Mediterranean Sea;   

DOI  :  10.1016/j.marpolbul.2019.07.047

来源: Elsevier

【 摘 要 】

Trace metal contamination in the European sardine and anchovy food web was investigated in the Gulf of Lions, NW Mediterranean Sea, including seawater and size fractions of plankton. The results highlighted: i) higher and more variable concentrations in the smaller plankton size classes for all metals except cadmium; ii) higher concentrations in anchovy versus sardine for all elements except lead; iii) different patterns of metal bioaccumulation through the food web: cobalt, nickel, copper, silver, lead and zinc displayed continuously decreasing concentrations (with the exception of increased zinc in fish only), while mercury concentrations dropped considerably in larger plankton size classes and rose significantly in fish. Lastly, cadmium concentrations were found to be highest in intermediate plankton size classes, with very low levels in fish. The need to efficiently characterize the biological composition of plankton in order to fully identify its role in the mobilization and transfer of metals was highlighted.

【 授权许可】

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