1
|
Alekseenko E, Thouvenin B, Tronczyński J, Carlotti F, Garreau P, Tixier C, Baklouti M. Modeling of PCB trophic transfer in the Gulf of Lions; 3D coupled model application. MARINE POLLUTION BULLETIN 2018; 128:140-155. [PMID: 29571357 DOI: 10.1016/j.marpolbul.2018.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/05/2018] [Indexed: 06/08/2023]
Abstract
3D coupled modeling approach is used for the PCB dispersion assessment in the Gulf of Lion and its transfer to zooplankton via biogeochemical processes. PCB budgets and fluxes between the different species of PCB: dissolved, particulate, biosorbed on plankton, assimilated by zooplankton, which are governed by different processes: adsorption/desorption, bacteria and plankton mortality, zooplankton excretion, grazing, mineralization, volatilization have been estimated. Model outputs were compared with the available in situ data. It was found that the Rhone River outflows play an important role in the organism contamination in the coastal zone, whereas the atmospheric depositions are rather more important in the offshore zones. The transfer of the available contaminant to bacteria and phytoplankton species is mainly related to the biomass present in the water column. Absorption fluxes (grazing) to zooplankton are rather higher than the passive sorption fluxes, which are themselves also linked to the sorption coefficient.
Collapse
Affiliation(s)
- E Alekseenko
- P.P. Shirshov Institute of Oceanography, Russian Academy of Sciences (SIO RAS), Nakhimosvskiy 36, 117218 Moscow, Russia; Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), CEA Saclay, Gif-sur-Yvette 91191, France.
| | - B Thouvenin
- IFREMER, Dynamiques des Ecosystèmes Côtiers, Z.I. Pointe du Diable, BP70, Plouzané 29280, France
| | - J Tronczyński
- IFREMER, RBE/BE/LBCO, B.P. 21105, Nantes 44311, France
| | - F Carlotti
- Aix-Marseille Université, Université de Toulon, CNRS/INSU, IRD, MIO, UM 110, Marseille, Cedex 09 13288, France
| | - P Garreau
- IFREMER, Univ. Brest, CNRS UMR 6523, IRD, Laboratoire d'Océanographie Physique et Spatiale (LOPS), IUEM, 29280 Brest, France
| | - C Tixier
- IFREMER, RBE/BE/LBCO, B.P. 21105, Nantes 44311, France
| | - M Baklouti
- Aix-Marseille Université, Université de Toulon, CNRS/INSU, IRD, MIO, UM 110, Marseille, Cedex 09 13288, France
| |
Collapse
|