Towards an Integrated Ecosystem- Based Bioaccumulation and Metal Speciation Model

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Title Towards an Integrated Ecosystem- Based Bioaccumulation and Metal Speciation Model
Author Richards, Russell; Chaloupka, Milani; Tomlinson, Rodger Benson
Journal Name Ecosystems
Editor M.G. Turner; S.R. Carpenter
Year Published 2010
Place of publication United States
Publisher Springer
Abstract Heavy metal bioaccumulation models are important for interpreting water quality data, predicting bioaccumulation in organisms, and investigating the provenance of contaminants. To date they have been predominantly used as single-issue models, under steady-state conditions and in isolation of the biogeochemical processes that control metal bioaccumulation. Models that incorporate these processes would allow a more holistic approach to bioaccumulation modeling and contaminant assessment; however, this has been rarely undertaken, probably because it requires the integration of inter-disciplinary areas. In this study, we have developed such a model that integrates three key multi-disciplinary areas (biological, metal speciation, and bioaccumulation processes) and responds to variations in temporal external and internal forcing. Furthermore, spatial context is provided by developing the model within a simple hydrodynamic box-modeling framework. The calibrated model was able to predict with reasonable accuracy the temporal and spatial trends of soft-tissue copper bioaccumulation in a coastal oyster. This exploratory model was also used to highlight the impor- tance of phytoplankton as an important vector of copper uptake dynamics by an oyster, therefore reinforcing the importance of the integrated approach. Finally, our model provides a framework for greater application beyond this specific example such as in the areas of waterway restoration, which has been shown to be an important area of ecological and environmental research.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1007/s10021-010-9392-8
Copyright Statement Copyright 2010 Springer New York. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. The original publication is available at www.springerlink.com
Volume 13
Issue Number 8
Page from 1303
Page to 1318
ISSN 1432-9840
Date Accessioned 2010-11-26
Language en_AU
Research Centre Griffith Centre for Coastal Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Ecosystem Function; Environmental Impact Assessment; Environmental Monitoring
URI http://hdl.handle.net/10072/36846
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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