Johanna Kraus, Ph.D.


Johanna M. Kraus, Ph.D. is a Research Ecologist with the U.S. Geological Survey Columbia Environmental Research Center where she studies effects of anthropogenic stressors on food webs, biodiversity and environmental health in aquatic and terrestrial ecosystems. She began her career with the USGS in 2011 researching how trace metals from acid rock drainage impact adult aquatic insect emergence and contaminant flux to terrestrial insectivores near mountain streams. Since then, her research has uncovered when and where contaminants may impact aquatic and terrestrial food webs using large empirical field studies, laboratory manipulations and conceptual modelling. Dr. Kraus received her B.A. in Biology from Brown University and Ph.D. in Biology from the University of Virginia.  


  • Ph.D., Biology, University of Virginia, 2006
  • B.A., Biology, Brown University, honors, magna cum laude, 1998

Professional Appointments

  • Research Ecologist, U.S. Geological Survey, 2016 - present
  • Mendenhall Research Fellow, U.S. Geological Survey 2011- 2015
  • Post-doctoral Researcher, Biology, Virginia Commonwealth University, 2007-2010  
  • Visiting Assistant Professor, Biology, Washington and Lee University, 2006-2007
  • National Science Foundation EAPSI Fellow, Japan, 2006