Dean Horton
Biosciences 2411

Anna is a Postdoc/Research Scientist with the CMU Institute for Great Lakes Research


  • Ph.D., University of Michigan, 2018
  • M.S., State University of New York - College of Environmental Science & Forestry, 2011
  • B.S., University of Michigan, 2018

Research Interests

  • Stream Ecology
  • Ecosystem Ecology
  • Exotoxicology
  • Environmental Stressors

Current Research Projects

My research investigates the influence of groundwater-surface water interactions on contaminant bioavailability and toxicity in freshwater sediments. The mixing of surface water and groundwater within the hyporheic zone can affect reach-scale sediment geochemistry and redox conditions in sediments. Redox conditions can subsequently influence the toxicity of metal-contaminated sediments, as metals can bind to various redox-sensitive ligands in sediments, decreasing their bioavailability to benthic organisms. Using field, mesocosm and laboratory experiments, I investigate the influences of hyporheic flows on sediment geochemistry, and ultimately assess effects on benthic macroinvertebrate communities and biofilm structure and function.