Modeling of PCB trophic transfer in the Gulf of Lions; 3D coupled model application

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 g...

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Bibliographic Details
Published in:Marine pollution bulletin 2018-03, Vol.128, p.140-155
Main Authors: Alekseenko, E., Thouvenin, B., Tronczyński, J., Carlotti, F., Garreau, P., Tixier, C., Baklouti, M.
Format: Article
Language:English
Subjects:
3D coupled model
Animals
Atmospheric models
Bacteria
Biodiversity and Ecology
Biogeochemistry
Biomass
CB153 fluxes
Coastal zone
Coastal zones
Contaminants
Contamination
Data processing
Earth Sciences
Environmental Monitoring - methods
Environmental Sciences
Excretion
Fluxes
Food Chain
France
Grazing
Gulf of Lions
Mineralization
Modelling
Models, Theoretical
Oceanography
Offshore
PCB
PCB compounds
PCBs
Phytoplankton
Phytoplankton - chemistry
Phytoplankton - growth & development
Plankton
Planktonic food web
Polychlorinated biphenyls
Polychlorinated Biphenyls - analysis
Rivers
Rivers - chemistry
Sciences of the Universe
Seawater - chemistry
Sorption
Spatio-Temporal Analysis
Three dimensional models
Volatilization
Water column
Water Pollutants, Chemical - analysis
Zooplankton
Zooplankton - chemistry
Zooplankton - growth & development
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Summary: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.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2018.01.008