Influence of particulate organic carbon on bioavailability and remobilization of sediment-associated contaminants in Swedish coastal benthic communities


Project leader


Funding source

Formas - The Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning


Project Details

Start date: 01/06/2003
End date: 01/12/2008
Funding: 2020000 SEK


Description

This project aims at studying essential processes involved in the accumulation of commonly occurring anthropogenic contaminants (trace metals and organic contaminants) in coastal Swedish benthic invertebrate communities, as well as to determine the risk of remobilization of contaminants from sediments to higher trophic levels. The project has five main objectives:(1) use a biomimetic amino acid assay (EHAA) to characterize the nutritional quality of sedimentary organic matter in natural benthic communities, (2) evaluate the role of sedimentary organic matter quality on the bioavailability of contaminants to deposit-feeding invertebrates in natural benthic communities, (3) assess "Digestive Fluid extractions* (DFE), a new rapid screening tool for bioavailability, done in vitro using isolated digestive fluids from polychaetes and newly developed synthetic mimics of natural digestive fluids, (4) evaluate the remobilization of contaminants from polluted sediments following bioturbation, and (5) use our results to establish bioaccumulation models and bioturbation-driven release models in order to assess the exposure risk posed by contaminated sediments in Swedish coastal benthic systems.

Last updated on 2017-24-03 at 12:58