Mary Freeman, Research Ecologist, U.S. Geological Survey

« Please Note: Mary Freeman is no longer active on the CWT-LTER Project so contact information may not be accurate (see the CWT Personnel page for an up-to-date list of participants) »

Mary Freeman

Research Emphasis:

River ecology and management; effects of altering streamflow and instream habitat on biological processes that sustain the diversity and abundances of native riverine fauna.

Contact Information:

Primary Organization:  U.S. Geological Survey

Mailing Address:

Mary C. Freeman
USGS Patuxent Wildlife Research Center
Institute of Ecology
University of Georgia
Athens, GA 30602-2202

Office Phone:  706-543-0978

FAX Number:  706-542-1235


Web Page:

CWT Publications and Presentations: (custom bibliography)

Journal Articles

Freeman, M.C., Pringle, C.M., Jackson, C.R. 2007. Hydrologic Connectivity and the Contribution of Stream Headwaters to Ecological integrity at Regional Scales. Journal of the American Water Resources Association 43(1): 5-14.

Grossman, G.D., R.E. Ratajczak Jr., M.K. Crawford, and M.C. Freeman. 1998. Assemblage of organization in stream fishes: effects of environmental variation and interspecific interactions. Ecological Monographs. 68(3): 395-420.

Freeman, M.C., and G.D. Grossman. 1993. Effects of habitat availability on dispersion of a stream cyprinid. Environmental Biology of Fishes. 37: 121-130.

Freeman, M.C., and G.D.Grossman. 1992. Group foraging by a stream minnow: sho als or aggregations? Animal Behaviour. 44: 393-403.

Freeman, M.C., G.D. Grossman. 1992. A field test for competitive interactions among foraging stream fishes. Copeia 3: 898-902.

Grossman, G.D., Nickerson, D.M., Freeman, M.C. 1991. Principal Component Analyses of Assemblage Structure Data: Utility of Tests Based on Eigenvalues. Ecology, 72(1): 341-347.

Freeman, M.C., and D.J. Stouder. 1989. Intraspecific interactions influence size specific depth distribution in Cottus bairdi. Environmental Biology of Fishes 24(3): 231-236.

Freeman, M.C., M.K. Crawford, J.C. Barrett, D.E. Facey, M.G. Flood, J. Hill, D.J. Stouder, and G.D. Grossman. 1988. Fish assemblage stability in a Southern Appalachian stream. Canadian Journal of Fisheries and Aquatic Sciences 45: 1949-1958.

Grossman, G.D., and M.C. Freeman. 1987. Microhabitat use in a stream fish assemblage. The Journal of the Zoological Society of London 212: 151-176.

Grossman, G.D., Freeman, M.C., Moyle, P.B., Whitaker, J.O. 1985. Stochasticity and Assemblage Organization in an Indiana Stream Fish Assemblage.The American Naturalist, 126(3): 275-285.

Theses and Dissertations

Freeman, Mary C.. 1990. Foraging behavior of the rosyside dace, Clinostomus funduloides: the importance of social interactions. Ph.D. Dissertation. Athens, GA: University of Georgia