FN Archimer Export Format
PT J
TI Trophic connectivity between offshore upwelling and the inshore food web of Banc d’Arguin (Mauritania): New insights from isotopic analysis
BT 
AF CARLIER, Antoine
   CHAUVAUD, Laurent
   VAN DER GEEST, Matthijs
   LE LOC'H, Francois
   LE DUFF, Michel
   VERNET, Marc
   RAFFRAY, Jean
   DIAKHATE, Djibril
   LABROSSE, Pierre
   WAGUE, Abdoulaye
   LE GOFF, Clement
   GOHIN, Francis
   CHAPRON, Bertrand
   CLAVIER, Jacques
AS 1:1;2:1;3:2,3;4:1,4;5:1;6:5;7:1;8:6;9:6;10:6;11:7;12:7;13:8;14:1;
FF 1:PDG-ODE-DYNECO-BENTHOS;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:PDG-ODE-DYNECO-BENTHOS;12:PDG-ODE-DYNECO-PELAGOS;13:PDG-ODE-LOS;14:;
C1 Inst Univ Europeen Mer, CNRS UBO IRD IFREMER, LEMAR, UMR 6539, F-29280 Plouzane, France.
   NIOZ Royal Netherlands Inst Sea Res, Dept Marine Ecol, NL-1790 AB Den Burg, Texel, Netherlands.
   Univ Groningen, Ctr Ecol & Evolutionary Studies, Anim Ecol Grp, NL-9700 CC Groningen, Netherlands.
   Ctr Rech Halieut, Inst Dev Res, IRD IFREMER UMII, Ecosyst Marins Exploites,UMR EME 212, F-34203 Sete, France.
   Univ Paris 06, CNRS, Stn Biol Roscoff,UMR 7144, Adaptat & Diversite Milieu Marin,Equipe Chim Mari, F-29680 Roscoff, France.
   Inst Mauritanien Rech Oceanog & Peches, Nouadhibou, Mauritania.
   IFREMER, Ctr Bretagne, DYNECO Lab Ecol Pelag, F-29280 Plouzane, France.
   IFREMER, Ctr Bretagne, Lab Oceanog Spatiale, F-29280 Plouzane, France.
C2 UBO, FRANCE
   INST SEA RESEARCH (NIOZ), NETHERLANDS
   UNIV GRONINGEN, NETHERLANDS
   IRD, FRANCE
   UNIV PARIS 06, FRANCE
   IMROP, MAURITANIA
   IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-BENTHOS
   PDG-ODE-DYNECO-PELAGOS
   PDG-ODE-LOS
UM LOPS
   LEMAR
   MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.335
TC 16
UR https://archimer.ifremer.fr/doc/00269/37999/36078.pdf
LA English
DT Article
DE ;Banc d'Arguin;West Africa;food web structure;remote sensing;stable isotope;upwelling
AB Banc d’Arguin (BA), Mauritania, is a nationally protected shallow gulf > 10,000 km2 between the Sahara desert and the upwelling system off the Mauritanian coast. In the southeast, BA consists of a 500 km2 tidal flat, the most important wintering site for shorebirds using the East Atlantic Flyway. The Mauritanian upwelling-driven phytoplankton production supports the most productive fisheries worldwide, but little is known about its trophic role in the functioning of the inshore BA food web. Using stable isotopes as trophic tracers to distinguish between upwelling-driven phytoplankton, open ocean phytoplankton, and benthic primary producers, we assessed the spatial extent to which the inshore BA food web is fuelled by upwelling-driven phytoplankton production. The δ13C and δ15N signals were characterized in dominant primary producers, benthic invertebrate taxa, and various fish species along an offshore–inshore (northwest–southeast) gradient. We also monitored the spatial and temporal extent of upwelling entering BA during 2008 with remote sensing of sea surface temperature and chlorophyll a data. The results suggest that benthic invertebrates and fishes living in the northwestern part of BA depend on the nearby upwelling phytoplankton production, but this food source does not support the intertidal benthic community in southeast BA. Furthermore, the isotopic signatures of fishes suggest weak trophic connectivity between the northern subtidal and southeastern intertidal BA. Our results support the hypothesis that the southeastern tidal flat region functions as a distinct ecosystem with a food web supported mainly by local benthic primary production, which is crucial knowledge for effective management of the pristine BA national park.
PY 2015
PD NOV
SO Estuarine Coastal And Shelf Science
SN 0272-7714
PU Academic Press Ltd- Elsevier Science Ltd
VL 165
UT 000367119500017
BP 149
EP 158
DI 10.1016/j.ecss.2015.05.001
ID 37999
ER

EF