FN Archimer Export Format
PT J
TI Benthic metabolism in shallow coastal ecosystems of the Banc d'Arguin, Mauritania
BT 
AF CLAVIER, Jacques
   CHAUVAUD, Laurent
   AMICE, Erwan
   LAZURE, Pascal
   VAN DER GEEST, Matthijs
   LABROSSE, Pierre
   DIAGNE, Ahmed
   CARLIER, Antoine
   CHAUVAUD, Sylvain
AS 1:1;2:1;3:1;4:2;5:3;6:4;7:4;8:5;9:6;
FF 1:;2:;3:;4:PDG-ODE-DYNECO-PHYSED;5:;6:;7:;8:PDG-ODE-DYNECO-BENTHOS;9:;
C1 Inst Univ Europeen de la Mer, CNRS, UMR 6539, IUEM,Lab Sci Environm Marin, F-29280 Plouzane, France.
   IFREMER, Lab Phys Hydrodynam Sedimentaire, Ctr Bretagne, F-29280 Plouzane, France.
   NIOZ, Royal Netherlands Inst Sea Res, Dept Marine Ecol, NL-1790 AB Den Burg, Texel, Netherlands.
   IMROP, Nouadhibou, Mauritania.
   IFREMER, Ctr Bretagne, Lab Ecol Benthique, F-29280 Plouzane, France.
   TBM, F-56400 Auray, France.
C2 UBO, FRANCE
   IFREMER, FRANCE
   INST SEA RESEARCH (NIOZ), NETHERLANDS
   IMROP, MAURITANIA
   IFREMER, FRANCE
   TBM, FRANCE
SI BREST
SE UBO
   UMR-LEMAR
   PDG-ODE-DYNECO-PHYSED
   PDG-ODE-DYNECO-BENTHOS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.619
TC 16
UR https://archimer.ifremer.fr/doc/00189/29987/28460.pdf
   https://archimer.ifremer.fr/doc/00189/29987/28496.pdf
LA English
DT Article
DE ;Seagrass;Carbon metabolism;Intertidal;Subtidal;Respiration;Primary;production;Western Africa
AB Benthic primary production and respiration were investigated at 4 sites representative of the major coastal communities bordering the Sahara Desert in the Banc d'Arguin, Mauritania, Western Africa. These sites correspond to intertidal Zostera noltii beds (270 km(2)), intertidal bare sediments (88 km(2)), subtidal Cymodocea nodosa beds (374 km(2)), and subtidal bare sediments (311 km(2)). At each site, production-irradiance relationships were established in situ in November 2008 and January 2010, and used to calculate daily carbon fluxes for these communities. In intertidal areas, compared to emersion, the gross maximal photosynthetic rates for Z. noltii bed and bare sediment communities were on average 8-and 7-fold higher during immersion, respectively; community respiration rates were 3-and 18-fold higher during immersion, respectively. The Z. noltii bed was autotrophic during the 2 study periods, with a mean (+/- 95% probability limit) daily net community production of 71.3 +/- 58.6 mmol C m(-2) d(-1). Conversely, net community production was always negative in intertidal regions and subtidal bare sediments (average -7.3 +/- 46.7 mmol C m(-2) d(-1) and -47.0 +/- 38.9 mmol C m(-2) d(-1), respectively); the C. nodosa bed was negative in November (-96.2 +/- 85.1 mmol C m(-2) d(-1)) and positive in January (33.4 +/- 82.6 mmol C m(-2) d(-1)). Community respiration was highest in subtidal communities, indicating active mineralization of organic matter and demonstrating that Z. noltii beds are likely to increase the bio logical richness of the Banc d'Arguin by exporting energy. Our results confirm the ecological importance of seagrass beds in the net coastal carbon fluxes and justify their protection.
PY 2014
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 501
UT 000333958800002
BP 11
EP 23
DI 10.3354/meps10683
ID 29987
ER

EF