FN Archimer Export Format
PT J
TI Stomach content and stable isotope analyses provide complementary insights into the trophic ecology of coastal temperate bentho-demersal assemblages under environmental and anthropogenic pressures
BT 
AF Sturbois, A.
   Cozic, A.
   Schaal, G.
   Desroy, Nicolas
   Riera, P.
   Le Pape, Olivier
   Le Mao, Patrick
   Ponsero, A.
   Carpentier, A
AS 1:1,2,3;2:1,2;3:3;4:4;5:5;6:6;7:4;8:2,7;9:8;
FF 1:;2:;3:;4:PDG-ODE-LITTORAL-LERBN;5:;6:;7:PDG-ODE-LITTORAL-LERBN;8:;9:;
C1 Vivarmor Nature, 18 C rue du Sabot, 22440, Ploufragan, France
   Réserve naturelle nationale de la Baie de Saint-Brieuc, site de l’étoile, 22120, Hillion, France
   Laboratoire des Sciences de l'Environnement Marin (LEMAR), UMR 6539 CNRS/UBO/IRD/IFREMER, BP 70, 29280 Plouzané, France
   Ifremer, Laboratoire Environnement et Ressources Bretagne nord, 38 rue du Port Blanc, 35800, Dinard, France
   Sorbonne Université, CNRS, Station Biologique de Roscoff, UMR7144, Place Georges Teissier, CS90074, 29688, Roscoff Cedex, France
   DECOD (Ecosystem Dynamics and Sustainability), Institut Agro, INRAe, Ifremer, Rennes, France
   Saint-Brieuc Agglomération Baie d’Armor, 5 rue du 71ème RI, 22000, Saint-Brieuc, France
   Université de Rennes 1, BOREA, Muséum National d'Histoire Naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, Campus de Beaulieu, 35000, Rennes, France
C2 VIVARMOR NATURE, FRANCE
   RESERVE NAT NATL BAIE ST BRIEUC, FRANCE
   UBO, FRANCE
   IFREMER, FRANCE
   UNIV SORBONNE, FRANCE
   INST AGRO RENNES-ANGERS, FRANCE
   SAINT-BRIEUC AGGLO BAIE D’ARMOR, FRANCE
   UNIV RENNES, FRANCE
SI DINARD
SE PDG-ODE-LITTORAL-LERBN
UM LEMAR
   DECOD
IN WOS Ifremer UPR
   WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 3.3
TC 9
UR https://archimer.ifremer.fr/doc/00798/90962/96626.pdf
LA English
DT Article
CR RESTRO 19
BO Thalia
DE ;Fish assemblages;Functioning;Stomach contents;Stable isotope
AB Assessing organic matter fluxes and species interactions in food webs is of main interest to understand the ecological functioning in bays and estuaries characterised by a wide diversity of primary producers and consumers. Demersal fish and cephalopod assemblages were studied across a network of 24 shallow subtidal stations in the bay of Saint-Brieuc for their diversity, stable isotope compositions and stomach contents. The community was composed of 21 taxa, eight species accounting for 94.4% of the total abundance. Three different assemblages were identified along bathymetric gradient and spatial patterns in fish dredging. Marine POM and SOM were the most likely bases of food webs regarding δ13C range displayed by fish and cephalopod without differences among assemblages. Amphipoda was the main prey item in stomachs leading to significant diet overlaps among fish species, with some variations in additional items. Sepia officinalis was characterised by a singular diet and very low dietary overlap with other species. Contrasted stable isotope values and niche overlaps among species were evidenced in the δ13C/δ15N space. Callionymus lyra and Buglossidium luteum, characterised by the widest isotopic niches, encompassed those of other species, except the singular 13C-depleted Spondyliosoma cantharus. Coupling taxonomic assemblages, stomach contents and stable isotope analyses help disentangling the resources uses and evidencing trophic pathways. Contrasts in fish and cephalopod demersal assemblages occurring at different depths not necessarily imply differences in the trophic resources uses in such complex shallow coastal ecosystems under anthropogenic influences. 
PY 2022
PD DEC
SO Marine Environmental Research
SN 0141-1136
PU Elsevier BV
VL 182
UT 000888482900004
DI 10.1016/j.marenvres.2022.105770
ID 90962
ER

EF