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bio image of Marie-Noele  Croteau

Marie-Noele Croteau

Research Biologist

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Short Biography

PhD. 2002. Water and Environmental Sciences, University of Quebec (INRS-ETE), Canada

Influence of temperature and biological processes on Cd bioaccumulation in the aquatic insect Chaoborus

M.Sc. 1997. Water and Environmental Sciences, University of Quebec (INRS-ETE), Canada

Refining a predictive model that uses insect larvae as metal biomonitors in lakes

B.Sc. 1994. Biology, University of Quebec (Rimouski), Canada



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My Science Topics


Science Topic
Subtopic
Ecology and Environmentaquatic ecosystems
Environmental Issuescontamination and pollution
Environmental Issuesmine drainage
Environmental Issuestoxic trace elements



My USGS Science Strategy Areas

Understanding Ecosystems & Predicting Ecosystems Change

The Role of Environment and Wildlife in Human Health

Energy & Minerals for America's Future

Bioavailability and toxicity of metals

Image of Current Focus for Bioavailability and toxicity of metals

I utilize metal isotope tracers to further our understanding of the biogeochemical processes that govern the bioavailability and toxicity of metals to biota. Specifically, my research aims at linking contaminant bioavailability to toxicity, especially for aquatic organisms exposed to metals and metallo-nanomaterials through solution and diet. I am especially interested in improving our understanding of the physiological and geochemical processes that influence metal bioaccumulation. For example, I investigate how the geochemical properties of mineral particles consumed by organisms affect their bioavailability. Biodynamic modelling and enriched stable isotope tracers are the centerpiece of my work. I develop and refine biogeochemical methodologies to quantify responses of organisms to metal-stresses. Specifically, I conduct experiments where I employ biodynamic principles and isotope tracers to investigate the relationships between contaminant exposure and bioaccumulation, as well as between contaminant fluxes and toxicity. The parameterization of species-specific and metal-specific processes (e.g., feeding rates, assimilation efficiencies, loss and detoxification rates) allows predicting the risks and effects of metals and metallo-nanomaterials exposure.


Contact Information

Marie-Noele Croteau
345 Middlefield Road
Menlo Park, CA 94025
mcroteau@usgs.gov
650-329-4424
650-329-4327 - Fax
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