A modeling study on methylmercury bioaccumulation and its controlling factors

Eunhee Kim, Robert P. Mason and Christine M. Bergeron

Ecological Modelling, 2008, vol. 218, issue 3, 267-289

Abstract: The objectives of this study were: (1) to develop a methylmercury (MeHg) bioaccumulation model using data from STORM (high bottom Shear realistic water column Turbulence Resuspension Mesocosms) experiments; and (2) to use the model as a diagnostic tool to examine an effect of sediment resuspension and other important factors on MeHg bioaccumulation. There were four mesocosm experiments (1–4) conducted both in summer and fall. Tidal resuspension (4h on- and 2h off-cycles) was simulated using the STORM facility at CBL, UMCES (Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science). The model results showed that changes in clam biomass had a great effect on phytoplankton and zooplankton biomass, and consequently MeHg accumulation. In addition, it appeared that sediment resuspension played a role in transferring the enhanced sediment MeHg into organisms inhabiting both water column and sediment.

Keywords: Mercury; Methylmercury; Bioaccumulation model; Sediment resuspension; Mercury methylation; Methylmercury demethylation (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:218:y:2008:i:3:p:267-289

DOI: 10.1016/j.ecolmodel.2008.07.008

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