FN Archimer Export Format PT J TI 210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea) BT AF STRADY, Emilie HARMELIN-VIVIEN, Mireille CHIFFOLEAU, Jean-Francois VERON, Alain TRONCZYNSKI, Jacek RADAKOVITCH, Olivier AS 1:1,2;2:3;3:4;4:1;5:4;6:1; FF 1:;2:;3:PDG-RBE-BE;4:;5:PDG-RBE-BE-LBCO;6:; C1 Aix Marseille Univ, CEREGE UM34, CNRS, UMR7330, F-13545 Aix En Provence, France. IRD, LTHE, F-38000 Grenoble, France. Univ Toulon & Var, Aix Marseille Univ, CNRS INSU IRD, Inst Mediterraneen Oceanol MIO,UM 110, F-13288 Marseille, France. IFREMER Nantes, Nantes, France. C2 UNIV AIX MARSEILLE, FRANCE IRD, FRANCE UNIV TOULON, FRANCE IFREMER, FRANCE SI NANTES SE PDG-RBE-BE PDG-RBE-BE-LBCO IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 copubli-univ-france IF 2.047 TC 19 UR https://archimer.ifremer.fr/doc/00255/36609/35264.pdf LA English DT Article CR COSTEAU 3 COSTEAU 5 PERSMED 2 BO L'Europe Antea DE ;Po-210;Pb-210;Phytoplankton;Zooplankton;Pelagic fishes;Mediterranean Sea AB The transfer of 210Po and 210Pb in the food web of small pelagic fishes (from phytoplankton and zooplankton to anchovy Engraulis encrasicolus and sardine Sardina pilchardus) is investigated in the Gulf of Lion (GoL). We present original data of 210Po and 210Pb activity concentrations, C and N stable isotope ratios, measured (i) from different size classes of phytoplankton and zooplankton during spring and winter in different environments of the GoL, and (ii) in two fish species. Significant spatial patterns based on 210Po, 210Pb activity concentrations and 210Po/210Pb ratios in the different plankton size classes are evidenced by hierarchical clustering, both in spring and winter. This variability, also observed for C and N stable isotopes ratios, is connected to local specific pelagic habitats and hydrodynamics. The sampling strategy suggests that 210Po bioaccumulation in the GoL remains at a constant level from the first (dominated by phytoplankton) to the second trophic level (zooplankton), while 210Pb bioaccumulation shows an increase in winter. Based on stable N isotope ratios and 210Po activity concentrations measured in anchovies and sardines, we evidence 210Po bio-magnification along the trophic food web of these two planktivorous pelagic fishes. PY 2015 PD MAY SO Journal Of Environmental Radioactivity SN 0265-931X PU Elsevier Sci Ltd VL 143 UT 000353096600019 BP 141 EP 151 DI 10.1016/j.jenvrad.2015.02.019 ID 36609 ER EF