FN Archimer Export Format
PT J
TI Spatial and temporal variations in trace metal concentrations in surface sediments of the Marennes Oleron Bay. Relation to hydrodynamic forcing
BT 
AF STRADY, Emilie
   KERVELLA, Stephane
   BLANC, Gerard
   ROBERT, Serge
   STANISIERE, Jean-Yves
   COYNEL, Alexandra
   SCHAFER, Jörg
AS 1:1;2:2;3:1;4:2;5:3;6:1;7:1;
FF 1:;2:;3:;4:PDG-ODE-LER-LERPC;5:PDG-ODE-LER-LERMPL;6:;7:;
C1 Univ Bordeaux 1, CNRS, EPOC, GEMA Team,UMR 5805, F-33405 Talence, France.
   IFREMER, LER PC, F-17137 Lhoumeau, France.
   IFREMER, Stn Trinite Mer, F-56470 La Trinite Sur Mer, France.
C2 UNIV BORDEAUX, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI LA ROCHELLE
   LA TRINITE
SE PDG-DOP-LER-LERPC
   PDG-ODE-LER-LERPC
   PDG-ODE-LER-LERMPL
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.088
TC 21
UR https://archimer.ifremer.fr/doc/00038/14914/12241.pdf
   https://archimer.ifremer.fr/doc/00038/14914/15996.pdf
LA English
DT Article
CR GIMERCAD
   GIMERCAD
   METOGIR
BO Côtes De La Manche
DE ;Trace metal;Marennes Oleron Bay;Enrichment factor;Sediment;Hydrodynamic;Altus
AB Sediments quality assessment is of priority concern to provide a comprehensible overview of ecological and chemical state of an ecosystem. The Marennes-Oleron Bay, hosting the largest oyster production in France, is influenced by the historic polymetallic pollution of the Gironde Estuary. Despite, management efforts and decreasing emissions in the Gironde watershed, Cd levels in oysters from the bay are close to consumption limit (5 pig g(-1) dw. EC no. 466/2001). In this context, the aim of the study was to assess the priority metal (Ni, Cu, Zn, As, Ag, Cd, Hg, Pb and Th) concentrations in sediment within the Bay, by investigating spatial and temporal distribution variations and the role of hydrodynamic forcing. For that we selected three sites (east, west and south) characterizing different environments of she Bay and we observed metal concentrations, grain size distribution, bed elevation and wave activities during a year survey. The sampling strategy pointed out both spatial and temporal metal concentrations variability in sediment. In general, metal enrichments were close to geochemical background. The eastern part of the Bay, largely influenced by the Charente river particulate deposition, presented constant concentrations over the survey. In contrast, in the western part, bed elevation was strongly influenced by hydrodynamic forcing especially wave activities, and metal distribution showed constant metal concentrations except very located Cd minor enrichment related to the Gironde influence via the Antioche Strait (north). The southern part was disconnected from the rest of the Bay and showed minor to very located moderately severe Cd enrichment, related to the Gironde water discharges via the Maumusson Strait (south). Thus, the multi-disciplinary approach was relevant to characterize the interactions between hydrodynamic forcing on the environment and sediments and their metal quality state which (i) were close to geochemical background over a year for Ni, Cu, Zn, As, Ag, Ng and Pb (i) which presented enrichment of Cd in the western and southern part. (C) 2011 Elsevier Ltd. All rights reserved.
PY 2011
PD JUL
SO Continental Shelf Research
SN 0278-4343
PU Pergamon-elsevier Science Ltd
VL 31
IS 9
UT 000291379900009
BP 997
EP 1007
DI 10.1016/j.csr.2011.03.006
ID 14914
ER

EF