Dr. de Mutsert is an Assistant Professor in the Department of Environmental Science and Policy at George Mason University, and Associate Director of Research at the Potomac Environmental Research and Education Center. Her research is focused on tidal freshwater, coastal and estuarine fish ecology. She studies the effects of environmental and anthropogenic stressors on nekton abundance, community structure, and foodweb dynamics. Examples of stressors included in her studies are eutrophication, oil pollution, habitat alteration, hypoxia, fisheries, and changes in freshwater discharge. She uses a combination of field monitoring, community analysis, stable isotope analysis, and ecosystem modeling in her projects.