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Mercury in organisms from the Northwestern Mediterranean slope: Importance of food sources ArchiMer
Cresson, Pierre; Fabri, Marie-claire; Bouchoucha, Marc; Brach-papa, Christophe; Chavanon, Fabienne; Jadaud, Angelique; Knoery, Joel; Marco-miralles, Francoise; Cossa, D..
Mercury (Hg) is a global threat for marine ecosystems, especially within the Mediterranean Sea. The concern is higher for deep-sea organisms, as the Hg concentration in their tissues is commonly high. To assess the influence of food supply at two trophic levels, total Hg concentrations and carbon and nitrogen stable isotope ratios were determined in 7 species (4 teleosts, 2 sharks, and 1 crustacean) sampled on the upper part of the continental slope of the Gulf of Lions (Northwestern Mediterranean Sea), at depths between 284 and 816 m. Mean Hg concentrations ranged from 1.30 ± 0.61 to 7.13 ± 7.09 μg g− 1 dry mass, with maximum values observed for small-spotted catshark Scyliorhinus canicula. For all species except blue whiting Micromesistius poutassou, Hg...
Tipo: Text Palavras-chave: Continental slope; Trophic webs; Depth; Teleosts; Sharks; Stable isotopes.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00206/31759/30693.pdf
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