FN Archimer Export Format PT J TI Variability of energy density among mesozooplankton community: new insights in functional diversity to forage fish BT AF DESSIER, Aurelie DUPUY, Christine KERRIC, Anais MORNET, Francoise AUTHIER, Matthieu BUSTAMANTE, Paco SPITZ, Jerome AS 1:1;2:1;3:1;4:2;5:3;6:1;7:3; FF 1:;2:;3:;4:PDG-RBE-HGS;5:;6:;7:; C1 Univ La Rochelle, CNRS, UMR 7266, Littoral Environm & Soc LIENSs, 2 Rue Olympe de Gouges, F-17042 La Rochelle 01, France. IFREMER, Unite Halieut Gascogne Sud HGS, Stn La Rochelle, Pl Gaby Coll, F-17087 Lhoumeau, France. Univ La Rochelle, CNRS, UMS 3462, Observ PELAGIS Syst Observat Conservat Mammiferes, F-17071 La Rochelle, France. C2 UNIV LA ROCHELLE, FRANCE IFREMER, FRANCE UNIV LA ROCHELLE, FRANCE SI LA ROCHELLE SE PDG-RBE-HGS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 3.245 TC 11 UR https://archimer.ifremer.fr/doc/00407/51835/52434.pdf LA English DT Article CR PELGAS PELGAS 2014 BO Thalassa DE ;Bay of Biscay;Profitability;Copepods;Prey-predator relationship;Fisheries AB To explore some aspects of mesozooplankton functional diversity, this study quantified energy density during the springtime in the Bay of Biscay both between different species and between different size-classes. Energy densities of copepod species (Centropages typicus, Anomalocera patersoni, Calanus helgolandicus, and Labidocera wollastoni), as well as anchovy eggs (Engraulis encrasicolus) ranged from 0.5 to 6.7 kJ/g wet weight (ww). Considering size-classes, energy densities varied from 0.74 to 1.26 kJ/g ww. Energy density of C. helgolandicus exhibited a spatial pattern with the highest values in the plume of the Gironde estuary. In contrast, no spatial pattern of energy density has been detected considering size-classes. Our results showed that the mesozooplankton cannot be considered as a homogeneous resource in terms of quality. During spring, some species and some geographical areas seem thus to be more profitable to predators than others. We argued that the energy density is a key functional trait of mesozooplankton species. Finally, we discussed how interspecific and spatial variability of energy density among the mesozooplankton community can have important implications on fish population dynamics. PY 2018 PD SEP SO Progress In Oceanography SN 0079-6611 PU Pergamon-elsevier Science Ltd VL 166 UT 000442979000012 BP 121 EP 128 DI 10.1016/j.pocean.2017.10.009 ID 51835 ER EF