%0 Journal Article
%T Po-210 and Pb-210 trophic transfer within the phytoplankton-zooplankton -anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea)
%+ Laboratoire d'étude des transferts en hydrologie et environnement (LTHE)
%+ Institut méditerranéen d'océanologie (MIO)
%+ Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
%+ Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE)
%A Strady, Emilie
%A Harmelin-Vivien, Mireille
%A Chiffoleau, Jean Francois
%A Veron, Alain
%A Tronczynski, Jacek
%A Radakovitch, Olivier
%< avec comité de lecture
%Z CEREGE:15-023
%@ 0265-931X
%J Journal of Environmental Radioactivity
%I Elsevier
%V 143
%P 141-151
%8 2015-05
%D 2015
%R 10.1016/j.jenvrad.2015.02.019
%K Po-210
%K Pb-210
%K Phytoplankton
%K Zooplankton
%K Pelagic fishes
%K Mediterranean Sea
%K Po-210
%Z Environmental Sciences/Biodiversity and Ecology
%Z Sciences of the Universe [physics]/Continental interfaces, environmentJournal articles
%X The transfer of 210Po and 210Pb in the food webs 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 and 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 strongly 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 (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.
%G English
%L hal-01295614
%U https://hal.science/hal-01295614
%~ SDE
%~ INSU
%~ UNIV-SAVOIE
%~ UGA
%~ UNIV-TLN
%~ CNRS
%~ UNIV-GRENOBLE1
%~ UNIV-AMU
%~ CDF
%~ INPG
%~ IRSTEA
%~ IFREMER
%~ INRA
%~ MIO
%~ CEREGE
%~ OSU-INSTITUT-PYTHEAS
%~ GIP-BE
%~ PSL
%~ AGREENIUM
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%~ TP
%~ MIO-EMBIO
%~ MIO-CEM
%~ CDF-PSL
%~ USMB-COMUE
%~ INRAEPACA