Chouvelon T., Strady Emilie, Harmelin-Vivien M., Radakovitch O., Brach-Papa C., Crochet S., Knoery J., Rozuel E., Thomas B., Tronczynski J., Chiffoleau J. F. (2019). Patterns of trace metal bioaccumulation and trophic transfer in a phytoplankton-zooplankton-small pelagic fish marine food web. Marine Pollution Bulletin, 146, p. 1013-1030. ISSN 0025-326X.
Titre du document
Patterns of trace metal bioaccumulation and trophic transfer in a phytoplankton-zooplankton-small pelagic fish marine food web
Année de publication
2019
Auteurs
Chouvelon T., Strady Emilie, Harmelin-Vivien M., Radakovitch O., Brach-Papa C., Crochet S., Knoery J., Rozuel E., Thomas B., Tronczynski J., Chiffoleau J. F.
Source
Marine Pollution Bulletin, 2019,
146, p. 1013-1030 ISSN 0025-326X
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.
Plan de classement
Ecologie, systèmes aquatiques [036]
;
Pollution [038]
;
Ressources halieutiques [040]
Description Géographique
MEDITERRANEE ; LION GOLFE
Localisation
Fonds IRD [F B010077107]
Identifiant IRD
fdi:010077107
