FN Archimer Export Format
PT J
TI Linking small pelagic dietary shifts with ecosystem changes in the Gulf of Lions
BT 
AF BROSSET, Pablo
   LE BOURG, Baptiste
   COSTALAGO, David
   BANARU, Daniela
   VAN BEVEREN, Elisabeth
   BOURDEIX, Jean-Herve
   FROMENTIN, Jean-Marc
   MENARD, Frederic
   SARAUX, Claire
AS 1:1,2;2:3,5;3:4;4:3;5:2;6:2;7:2;8:3;9:2;
FF 1:;2:;3:;4:;5:PDG-RBE-MARBEC-LHM;6:PDG-RBE-MARBEC-LHM;7:PDG-RBE-MARBEC;8:;9:PDG-RBE-MARBEC-LHM;
C1 Univ Montpellier, IFREMER, UMR MARBEC, IRD,UM,CNRS, F-34203 Sete, France.
   IFREMER, IRD, CNRS, UMR MARBEC,UM, F-34203 Sete, France.
   Univ Toulon & Var, Aix Marseille Univ, Mediterranean Inst Oceanog, CNRS,IRD,UM 110, F-13288 Marseille, France.
   Stockholm Univ, Dept Ecol Environm & Plant Sci, S-10691 Stockholm, Sweden.
   Univ Liege, Lab Oceanol, MARE Ctr, B-4000 Liege, Belgium.
C2 UNIV MONTPELLIER, FRANCE
   IFREMER, FRANCE
   UNIV TOULON & VAR, FRANCE
   UNIV STOCKHOLM, SWEDEN
   UNIV LIEGE, BELGIUM
SI SETE
SE PDG-RBE-MARBEC-LHM
   PDG-RBE-MARBEC
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.292
TC 58
UR https://archimer.ifremer.fr/doc/00347/45822/45468.pdf
   https://archimer.ifremer.fr/doc/00347/45822/45540.pdf
LA English
DT Article
CR PELMED - PELAGIQUES MEDITERRANÉE
DE ;Trophic ecology;Anchovy;Sardine;Sprat;Dietary overlap;NW Mediterranean
AB Since 2008, a severe decrease in size and body condition together with a demographic truncation has been observed in the sardine (secondarily in anchovy) population of the Gulf of Lions (NW Mediterranean Sea). In parallel, sprat biomass, which was negligible before, has increased tenfold. All of these changes have strongly affected the regional fisheries. Using trophic and isotopic data from contrasting periods of low versus high growth and condition, we investigated potential changes in diet and interspecific feeding interactions through time. Evidence of resource partitioning was found between sprat and both anchovy and sardine in 2004 and 2005. Since 2010, the isotopic niches of the 3 species have tended to overlap, suggesting higher risk of competition for food resources. Moreover, the wider trophic niche of sprat indicates higher variability in individual diets. Anchovy and sardine diet varied through time, with a high proportion of large copepods or cladocerans in periods of high growth and condition (1994 and 2007, respectively) versus a dominance of small copepods in the present (2011-2012). Furthermore, an important reduction in prey diversity was also identified in the diet of both anchovy and sardine during the most recent period. Our results support the hypothesis that changes in small pelagic fish growth, size and body condition and ultimately biomass could be due to bottom-up control characterized by changes in food availability and increasing potential trophic competition.
PY 2016
PD JUN
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 554
UT 000383801200011
BP 157
EP 171
DI 10.3354/meps11796
ID 45822
ER

EF