Solutions for Progress 

Ellen Preece, Ph.D.

Ellen Preece, Ph. D.

Senior Limnologist

Ellen earned her Ph.D. from Washington State University where she studied limnology and fisheries biology, with a focus on salmonids and algal toxins.  She has extensive experience working with blue-green algae toxins (microcystins) and is co-author of four peer-reviewed journal articles on microcystin accumulation in nearshore marine ecosystems and shellfish that humans consume. Most recently, Ellen has worked with other RBI staff to lead Toxicity Reduction Evaluations for several Central valley wastewater treatment plants. She also worked on Biological Assessments and Environmental Impact Reports to determine how projects within the Sacramento-San Joaquin Delta will affect water quality and fisheries. Ellen brings diverse expertise and experience to RBI’s Water Quality and Fisheries Departments.