Marie Noele Croteau, Ph.D.
Marie came to the USGS in September 2002 as a postdoctoral fellow to study the bioavailability and bioaccumulation of metals in freshwater food webs. Her work focused on understanding how metals are transferred through food webs and how trophic position in a food web influences exposure to metals.
Marie used nitrogen and carbon stable isotopes to show that cadmium, in contrast to copper, could be magnified along certain freshwater food webs. This suggests that processes that drive Cd trophic transfer are more complex than that of organo-metals, metalloids and organic contaminants.
In addition to her work on metal trophic transfer, she refined an approach that involves the use stable metal isotopes (rather than radioisotopes) to describe accumulation and loss dynamics in freshwater invertebrates. Characterization of bioaccumulation dynamics is critical to understanding risks associated with contaminant exposure in organisms. For instance, this tracing technique allowed showing that a slow rate constant of loss for Cu likely explains the elevated levels of this toxic trace metal found in molluscs in nature, and that diet is an important bioaccumulation pathway for metals for several aquatic species.
She used biodynamic modeling and the enriched stable isotope tracers in novel ways to understand the fate and effects of nanosized metals in aquatic organisms as well as to investigate how the geochemical properties of mineral particles consumed by organisms affect their bioavailability.
Education and Certifications
PhD. 2002. Water and Environmental Sciences, University of Quebec (INRS-ETE), Canada
M.Sc. 1997. Water and Environmental Sciences, University of Quebec (INRS-ETE), Canada
Science and Products
Isotopically modified silver nanoparticles to assess nanosilver bioavailability and toxicity at environmentally relevant exposures
Does water chemistry affect the dietary uptake and toxicity of silver nanoparticles by the freshwater snail Lymnaea stagnalis?
Toxicity and accumulation of silver nanoparticles during development of the marine polychaete Platynereis dumerilii
In vivo retention of ingested Au NPs by Daphnia magna: No evidence for trans-epithelial alimentary uptake
Bioavailability and bioaccumulation of metal-based engineered nanomaterials in aquatic environments: Concepts and processes
Dietary bioavailability of Cu adsorbed to colloidal hydrous ferric oxide
Isotopically modified nanoparticles for enhanced detection in bioaccumulation studies
Silver bioaccumulation dynamics in a freshwater invertebrate after aqueous and dietary exposures to nanosized and ionic Ag
Synthesis of isotopically modified ZnO nanoparticles and their potential as nanotoxicity tracers
A novel approach reveals that zinc oxide nanoparticles are bioavailable and toxic after dietary exposures
Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment
Predicting dietborne metal toxicity from metal influxes
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Isotopically modified silver nanoparticles to assess nanosilver bioavailability and toxicity at environmentally relevant exposures
Does water chemistry affect the dietary uptake and toxicity of silver nanoparticles by the freshwater snail Lymnaea stagnalis?
Toxicity and accumulation of silver nanoparticles during development of the marine polychaete Platynereis dumerilii
In vivo retention of ingested Au NPs by Daphnia magna: No evidence for trans-epithelial alimentary uptake
Bioavailability and bioaccumulation of metal-based engineered nanomaterials in aquatic environments: Concepts and processes
Dietary bioavailability of Cu adsorbed to colloidal hydrous ferric oxide
Isotopically modified nanoparticles for enhanced detection in bioaccumulation studies
Silver bioaccumulation dynamics in a freshwater invertebrate after aqueous and dietary exposures to nanosized and ionic Ag
Synthesis of isotopically modified ZnO nanoparticles and their potential as nanotoxicity tracers
A novel approach reveals that zinc oxide nanoparticles are bioavailable and toxic after dietary exposures
Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment
Predicting dietborne metal toxicity from metal influxes
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.