FN Archimer Export Format PT J TI Trophic ecology of juvenile flatfish in a coastal nursery ground: contributions of intertidal primary production and freshwater particulate organic matter BT AF KOSTECKI, Caroline ROUSSEL, J. M. DESROY, Nicolas ROUSSEL, G. LANSHERE, J. LE BRIS, H. LE PAPE, Olivier AS 1:1;2:2;3:3;4:1;5:1;6:1;7:1; FF 1:PDG-DOP-DCN-EMH;2:;3:PDG-ODE-LER-LERFBN;4:;5:;6:;7:; C1 Univ Europeenne Bretagne, UMR Ecol & Sante Ecosyst 985, F-35042 Rennes, France. INRA, UMR Ecol & Sante Ecosyst 985, F-35042 Rennes, France. IFREMER, Lab Environm Ressources Finistere Bretagne Nord, CRESCO, F-35801 Dinard, France. C2 UEB, FRANCE INRA, FRANCE IFREMER, FRANCE SI NANTES DINARD SE PDG-DOP-DCN-EMH PDG-ODE-LER-LERFBN IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 copubli-univ-france IF 2.55 TC 22 UR https://archimer.ifremer.fr/doc/00073/18438/15976.pdf LA English DT Article DE ;Microphytobenthos;Organic matter origin;Benthic food web;Coastal nursery ground;Juvenile flatfish AB Coastal and estuarine nurseries are essential habitats for juvenile flatfish. These small but productive areas provide food supply and sustain adult fish populations. The Mont-Saint-Michel Bay (MSMB) supports an important flatfish nursery ground but differs from many other nursery habitats due to limited freshwater inputs. The objectives of the present study in the MSMB were to (1) use gut content analysis to identify prey of the 2 most abundant flatfish species (common sole Solea solea and plaice Pleuronectes platessa) for different juvenile age-classes (0-group and 1-group for sole, 0-group for plaice), (2) use C and N stable isotope analysis to model the production sources sustaining juvenile flatfish production, and (3) compare these results with previous knowledge of estuarine nursery grounds located in western Europe. Items found in gut contents differed between species and size classes, with juvenile plaice having a larger prey spectrum. Despite accounting for sensitivity to large uncertainties in source signatures and trophic enrichment factors, stable isotope mixing models led to robust outputs. In contrast to previous studies in estuarine nurseries, we found that microphytobenthos was the major carbon source contribution to juvenile flatfish. The contribution of freshwater particulate organic matter was nonetheless significant, in spite of the very limited river inputs to MSMB. PY 2012 SO Marine Ecology-progress Series SN 0171-8630 PU Inter-research VL 449 UT 000301231500018 BP 221 EP 232 DI 10.3354/meps09563 ID 18438 ER EF