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Faculty member in the Biology Department since 2001.
Aquatic Biology

More Information
Presentations
Publications

Courses Regularly Taught

• Limnology
• Freshwater Invertebrate Zoology
• Entomology
• Introductory Biology II
  
• Animal Behavior
• Advanced Projects

Education

• University of Louisville, B.A. Biology
• University of Louisville, M.S. Aquatic Ecology
• University of Louisville, Ph.D. Environmental Science

Research

Dr. Debbie Guelda is an aquatic ecologist and specifically a river researcher at heart. Her graduate research concentrated on invertebrates in the lower Ohio watershed, particularly zooplankton. She is interested in how populations of plankton change in a river continuum both temporally and spatially. She brought this research to northern Minnesota where she is interested in how zooplankton communities change while traveling through Mississippi river-lake sequences. She is also interested in how planktonic (open water) invertebrates are energetically linked to benthic (bottom-dwelling) invertebrates in these systems. Her research has been presented both nationally and internationally at meetings of the North American Benthological Society (Vancouver, BC, Anchorage, Alaska) and the American Society of Limnology and Oceanography (Copenhagen, Denmark and Santiago de Compostela, Spain).

Recent publications include:

* Koch, R.W., D.L. Guelda, B.P. Palik, and J.D. Kragthorpe.In review.Importance of large woody debris dams on nutrient retention and organic matter processing in forest streams.Journal of North American Benthological Society

* Koch, R.W., D.L. Guelda and P.A. Bukaveckas.2007.Importance of phytoplankton carbon to heterotrophic bacteria in the Ohio, Cumberland and Tennessee Rivers.Hydrobiologia.

* Koch, R., P. Bukaveckas, and D. Guelda. 2005. Importance of phytoplankton carbon to heterotrophic bacteria in the Ohio, Cumberland and Tennessee rivers. In press. Hydrobiologia.