210Po and 210Pb trophic transfer within the phytoplankton–zooplankton–anchovy/sardine food web: a case study from the Gulf of Lion (NW Mediterranean Sea)
作者： Emilie Strady , Mireille Harmelin-Vivien , Jean François Chiffoleau , Alain Veron , Jacek Tronczynski
DOI: 10.1016/J.JENVRAD.2015.02.019
关键词:
摘要: The transfer of 210Po and 210Pb in the food webs small pelagic fishes (from phytoplankton zooplankton to anchovy Engraulis encrasicolus sardine Sardina pilchardus) is investigated Gulf Lion (GoL). We present original data activity concentrations, C N stable isotope ratios, measured (i) from different size classes during spring winter environments GoL, (ii) two fish species. Significant spatial patterns based on 210Po, concentrations 210Po/210Pb ratios plankton are evidenced by hierarchical clustering, both winter. This variability, also observed for isotopes strongly connected local specific habitats hydrodynamics. sampling strategy suggests that bioaccumulation GoL remains at a constant level first (phytoplankton) second trophic (zooplankton), while shows an increase Based anchovies sardines, we evidence bio-magnification along web these planktivorous fishes.
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