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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
• Comparative Invertebrate Anatomy
• Entomology
• General Biology
• People and the Environment
• Graduate Seminar
• 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 - June 2006) and the American Society of Limnology and Oceanography (Copenhagen, Denmark and Santiago de Compostela, Spain).

Recent publications include:

Guelda, D., R. Koch and P. Bukaveckas. Zooplankton sources, sinks, and system-wide variability in the Ohio River basin. In review: The Journal of Plankton Research.

P. Bukaveckas, D. Guelda, J. Jack, R. Koch, T. Sellers and J. Shostell. 2005. Effects of point source inputs, sub-basin delivery and longitudinal variation in material retention on C, N and P fluxes within the Ohio River Basin. In Press: Ecosystems.

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.