Mary Freeman, Ph.D.
Mary Freeman is a research ecologist with the Eastern Ecological Science Center at Athens, GA.
She received a B.S. in biology (1979), a M.S. in entomology (1982) and a Ph.D. in forest resources (1990) from the University of Georgia. Before joining Patuxent, Mary conducted research for the U.S. Fish and Wildlife Service and the National Biological Service in Auburn, AL (1992-1996). Mary serves as affiliate faculty at the Odum School of Ecology, University of Georgia, and on the graduate faculties at the University of Georgia and Auburn University.
Science and Products
Filter Total Items: 108
Geomorphology and fish assemblages in a Piedmont river basin, U.S.A.
1. We investigated linkages between fishes and fluvial geomorphology in 31 wadeable streams in the Etowah River basin in northern Georgia, U.S.A. Streams were stratified into three catchment sizes of approximately 15, 50 and 100 km2, and fishes and geomorphology were sampled at the reach scale (i.e. 20–40 times stream width).2. Non-metric multidimensional scaling (NMDS) identified 85% of the among
Authors
D.M. Walters, D.S. Leigh, Mary C. Freeman, B. J. Freeman, C. M. Pringle
Proposal for adaptive management to conserve biotic integrity in a regulated segment of the Tallapoosa River, Alabama, U.S.A
Conserving river biota will require innovative approaches that foster and utilize scientific understanding of ecosystem responses to alternative river-management scenarios. We describe ecological and societal issues involved in flow management of a section of the Tallapoosa River (Alabama, U.S.A.) in which a species-rich native fauna is adversely affected by flow alteration by an upstream hydropo
Authors
Elise R. Irwin, Mary C. Freeman
Flow and habitat effects on juvenile fish abundance in natural and altered flow regimes
Conserving biological resources native to large river systems increasingly depends on how flow-regulated segments of these rivers are managed. Improving management will require a better understanding of linkages between river biota and temporal variability of flow and instream habitat. However, few studies have quantified responses of native fish populations to multiyear (>2 yr) patterns of hydr
Authors
Mary C. Freeman, Z.H. Bowen, K.D. Bovee, E.R. Irwin
Bed texture and turbidity as indicators of fish biotic integrity in the Etowah River system
No abstract available.
Authors
D.M. Walters, Mary C. Freeman, D.S. Leigh, B. J. Freeman, M.J. Paul, C. M. Pringle
Stream loss and fragmentation due to impoundments in the upper Oconee watershed
No abstract available.
Authors
M.D. Merrill, Mary C. Freeman, B. J. Freeman, E.A. Kramer, L.M. Hartle
Overview of land cover and geomorphic indicators of biotic integrity in the Etowah River basin, GA
No abstract available.
Authors
D.S. Leigh, Mary C. Freeman, B. J. Freeman, E.A. Kramer, C. M. Pringle, A.D. Rosemond, M.J. Paul, D.M. Walters, A. Roy, C.P. Lo
Ecological considerations for reservoir planning in north Georgia
No abstract available.
Authors
Mary C. Freeman, M.D. Merrill, B. J. Freeman
Regional effects of hydrologic alterations on riverine macrobiota in the New World: Tropical-temperate comparisons
This article has two main objectives: to examine what is known about regional effects of hydrologic modifications in temperate and tropical areas of the New World (i.e., North and South America and the Caribbean), with an emphasis on fishes and molluscs; and to discuss research needs regarding regional effects of hydrologic alterations in temperate and tropical regions. A better understanding of
Authors
C. M. Pringle, Mary C. Freeman, B. J. Freeman
Habitat use by juvenile channel catfish and flathead catfish in lotic systems in Alabama
No abstract available.
Authors
E.R. Irwin, Mary C. Freeman, K.M. Costley
The Okefenokee Swamp: Invertebrate communities and foodwebs
No abstract available.
Authors
K.G. Porter, A. Bergstedt, Mary C. Freeman
Transferability of habitat suitability criteria: Response to comment
Response to comment by Williams, et al., 1999. North American Journal of Fisheries Management 19:623-625.
Authors
Mary C. Freeman, Z.H. Bowen, K.D. Bovee
Assemblage organization in stream fishes: Effects of environmental variation and interspecific interactions
We assessed the relative importance of environmental variation, interspecific competition for space, and predator abundance on assemblage structure and microhabitat use in a stream fish assemblage inhabiting Coweeta Creek, North Carolina, USA. Our study encompassed a 10–yr time span (1983–1992) and included some of the highest and lowest flows in the last 58 years. We collected 16 seasonal samples
Authors
Gary D. Grossman, R. E. Ratajczak, M. M. Crawford, Mary C. Freeman
Science and Products
Filter Total Items: 108
Geomorphology and fish assemblages in a Piedmont river basin, U.S.A.
1. We investigated linkages between fishes and fluvial geomorphology in 31 wadeable streams in the Etowah River basin in northern Georgia, U.S.A. Streams were stratified into three catchment sizes of approximately 15, 50 and 100 km2, and fishes and geomorphology were sampled at the reach scale (i.e. 20–40 times stream width).2. Non-metric multidimensional scaling (NMDS) identified 85% of the among
Authors
D.M. Walters, D.S. Leigh, Mary C. Freeman, B. J. Freeman, C. M. Pringle
Proposal for adaptive management to conserve biotic integrity in a regulated segment of the Tallapoosa River, Alabama, U.S.A
Conserving river biota will require innovative approaches that foster and utilize scientific understanding of ecosystem responses to alternative river-management scenarios. We describe ecological and societal issues involved in flow management of a section of the Tallapoosa River (Alabama, U.S.A.) in which a species-rich native fauna is adversely affected by flow alteration by an upstream hydropo
Authors
Elise R. Irwin, Mary C. Freeman
Flow and habitat effects on juvenile fish abundance in natural and altered flow regimes
Conserving biological resources native to large river systems increasingly depends on how flow-regulated segments of these rivers are managed. Improving management will require a better understanding of linkages between river biota and temporal variability of flow and instream habitat. However, few studies have quantified responses of native fish populations to multiyear (>2 yr) patterns of hydr
Authors
Mary C. Freeman, Z.H. Bowen, K.D. Bovee, E.R. Irwin
Bed texture and turbidity as indicators of fish biotic integrity in the Etowah River system
No abstract available.
Authors
D.M. Walters, Mary C. Freeman, D.S. Leigh, B. J. Freeman, M.J. Paul, C. M. Pringle
Stream loss and fragmentation due to impoundments in the upper Oconee watershed
No abstract available.
Authors
M.D. Merrill, Mary C. Freeman, B. J. Freeman, E.A. Kramer, L.M. Hartle
Overview of land cover and geomorphic indicators of biotic integrity in the Etowah River basin, GA
No abstract available.
Authors
D.S. Leigh, Mary C. Freeman, B. J. Freeman, E.A. Kramer, C. M. Pringle, A.D. Rosemond, M.J. Paul, D.M. Walters, A. Roy, C.P. Lo
Ecological considerations for reservoir planning in north Georgia
No abstract available.
Authors
Mary C. Freeman, M.D. Merrill, B. J. Freeman
Regional effects of hydrologic alterations on riverine macrobiota in the New World: Tropical-temperate comparisons
This article has two main objectives: to examine what is known about regional effects of hydrologic modifications in temperate and tropical areas of the New World (i.e., North and South America and the Caribbean), with an emphasis on fishes and molluscs; and to discuss research needs regarding regional effects of hydrologic alterations in temperate and tropical regions. A better understanding of
Authors
C. M. Pringle, Mary C. Freeman, B. J. Freeman
Habitat use by juvenile channel catfish and flathead catfish in lotic systems in Alabama
No abstract available.
Authors
E.R. Irwin, Mary C. Freeman, K.M. Costley
The Okefenokee Swamp: Invertebrate communities and foodwebs
No abstract available.
Authors
K.G. Porter, A. Bergstedt, Mary C. Freeman
Transferability of habitat suitability criteria: Response to comment
Response to comment by Williams, et al., 1999. North American Journal of Fisheries Management 19:623-625.
Authors
Mary C. Freeman, Z.H. Bowen, K.D. Bovee
Assemblage organization in stream fishes: Effects of environmental variation and interspecific interactions
We assessed the relative importance of environmental variation, interspecific competition for space, and predator abundance on assemblage structure and microhabitat use in a stream fish assemblage inhabiting Coweeta Creek, North Carolina, USA. Our study encompassed a 10–yr time span (1983–1992) and included some of the highest and lowest flows in the last 58 years. We collected 16 seasonal samples
Authors
Gary D. Grossman, R. E. Ratajczak, M. M. Crawford, Mary C. Freeman