FN Archimer Export Format PT J TI Mercury in organisms from the Northwestern Mediterranean slope: Importance of food sources BT AF CRESSON, Pierre FABRI, Marie-Claire BOUCHOUCHA, Marc BRACH-PAPA, Christophe CHAVANON, Fabienne JADAUD, Angelique KNOERY, Joel MARCO-MIRALLES, Francoise COSSA, D. AS 1:1;2:1;3:1;4:2;5:1;6:3;7:2;8:1;9:4; FF 1:PDG-ODE-LITTORAL-LERPAC;2:PDG-ODE-LITTORAL-LERPAC;3:PDG-ODE-LITTORAL-LERPAC;4:PDG-RBE-BE-LBCM;5:PDG-ODE-LITTORAL-LERPAC;6:PDG-RBE-HM-RHSETE;7:PDG-RBE-BE-LBCM;8:PDG-ODE-LITTORAL-LERPAC;9:; C1 IFREMER, Ctr Mediterranee, F-83507 La Seyne Sur Mer, France. IFREMER, Ctr Atlant, F-44311 Nantes 03, France. IFREMER, Ctr Mediterranee, F-34203 Sete, France. Univ Grenoble 1, IS Terre, F-38041 Grenoble, France. C2 IFREMER, FRANCE IFREMER, FRANCE IFREMER, FRANCE UNIV GRENOBLE, FRANCE SI TOULON NANTES SETE SE PDG-ODE-LITTORAL-LERPAC PDG-RBE-BE-LBCM PDG-RBE-HM-RHSETE IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 4.099 TC 36 TU CNRS IFREMER IFSTTAR IRD UNIVERSITE CHAMBERY UNIVERSITE GRENOBLE ALPES UR https://archimer.ifremer.fr/doc/00206/31759/30693.pdf LA English DT Article CR MEDITS 2005 MEDITS 2006 MEDITS 2007 MEDITS 2008 MEDITS 2009 MEDITS 2010 MEDITS 2012 BO L'Europe DE ;Continental slope;Trophic webs;Depth;Teleosts;Sharks;Stable isotopes AB 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 concentrations were above the health safety limits for human consumption defined by the European Commission, with a variable proportion of the individuals exceeding limits (from 23% for the Norway lobster Nephrops norvegicus to 82% for the blackbelly rosefish Helicolenus dactylopterus). Measured concentrations increased with increasing trophic levels. Carbon isotopic ratios measured for these organisms demonstrated that settling phytoplanktonic organic matter is not only the main source fueling trophic webs but also the carrier of Hg to this habitat. Inter- and intraspecific variations of Hg concentrations revealed the importance of feeding patterns in Hg bioaccumulation. In addition, biological parameters, such as growth rate or bathymetric range explain the observed contamination trends. PY 2014 PD NOV SO Science Of The Total Environment SN 0048-9697 PU Elsevier Science Bv VL 497 UT 000343613100025 BP 229 EP 238 DI 10.1016/j.scitotenv.2014.07.069 ID 31759 ER EF