FN Archimer Export Format
PT J
TI Comparative study of potential transfer of natural and anthropogenic cadmium to plankton communities in the North-West African upwelling
BT 
AF AUGER, Pierre-Amael
   MACHU, Eric
   GORGUES, Thomas
   GRIMA, Nicolas
   WAELES, Mathieu
AS 1:1;2:1,4;3:1,4;4:3,4;5:2,4;
FF 1:;2:;3:;4:;5:;
C1 UBO, IRD, IFREMER, LPO,UMR 6523,CNRS, F-29280 Plouzane, France.
   UBO, IRD, Lab Environm Mario LEMAR, UMR 6539,CNRS, F-29280 Plouzane, France.
   CNRS, France
   Ifremer, France
C2 IRD, FRANCE
   UBO, FRANCE
   CNRS, FRANCE
   Ifremer, France
UM LOPS
   LEMAR
IF 3.976
TC 38
UR https://archimer.ifremer.fr/doc/00252/36310/35200.pdf
LA English
DT Article
DE ;Cadmium;North-West African upwelling;Phosphate industry;Dispersion;Bioaccumulation;Plankton ecosystem
AB A Lagrangian approach based on a physical-biogeochemical modeling was used to compare the potential transfer of cadmium (Cd) from natural and anthropogenic sources to plankton communities (Cd-uptake) in the NorthWest African upwelling. In this region, coastal upwelling was estimated to be the main natural source of Cd while the most significant anthropogenic source for marine ecosystem is provided by phosphate industry. In our model experiment, Cd-uptake (natural or anthropogenic) in the North-West African upwelling is the result of an interplay between the Cd dispersion (by advection processes) and the simulated biological productivity. In the Moroccan waters, advection processes limit the residence time of water masses resulting in a low natural Cd-uptake by plankton communities while anthropogenic Cd-uptake is high. As expected, the situation is reversed in the Senegalo-Mauritanian upwelling where natural Cd-uptake is higher than anthropogenic Cd-uptake. Based upon an estimate of Cd sources, our modeling study shows, unexpectedly, that the anthropogenic signal of potential Cd-bioaccumulation in the Moroccan upwelling is of the same order of magnitude as the natural signal mainly present in the Senegalo-Mauritanian upwelling region. A comparison with observed Cd levels in mollusk and fishes, which shows overall agreement with our simulations, is confirming our estimates.
PY 2015
PD FEB
SO Science Of The Total Environment
SN 0048-9697
PU Elsevier Science Bv
VL 505
UT 000347654900088
BP 870
EP 888
DI 10.1016/j.scitotenv.2014.10.045
ID 36310
ER

EF