Mary Freeman, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 110
The Okefenokee Swamp: Invertebrate communities and foodwebs The Okefenokee Swamp: Invertebrate communities and foodwebs
No abstract available.
Authors
K.G. Porter, A. Bergstedt, Mary Freeman
Transferability of habitat suitability criteria: Response to comment Transferability of habitat suitability criteria: Response to comment
No abstract available.
Authors
Mary Freeman, Z.H. Bowen, K.D. Bovee
Assemblage organization in stream fishes: Effects of environmental variation and interspecific interactions 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...
Authors
Gary D. Grossman, R. E. Ratajczak, M. Crawford, Mary Freeman
Evaluation of generalized habitat criteria for assessing impacts of altered flow regimes on warmwater fishes Evaluation of generalized habitat criteria for assessing impacts of altered flow regimes on warmwater fishes
Assessing potential effects of flow regulation on southeastern warmwater fish assemblages is problematic because of high species richness and our poor knowledge of habitat requirements for most species. A previous attempt to reduce the complexity of describing habitat requirements for diverse assemblages defined five 'key habitat' types based on quantitative descriptions of depth...
Authors
Z.H. Bowen, Mary Freeman, K.D. Bovee
Transferability of habitat suitability criteria for fishes in warmwater streams Transferability of habitat suitability criteria for fishes in warmwater streams
We developed habitat suitability criteria and tested their transferability for nine fishes inhabiting unregulated Piedmont and Coastal Plain streams in Alabama. Criteria for optimal habitat were defined as those ranges of depth, velocity, substrate type, and cover type for which a species' suitability index (proportional abundance divided by proportional habitat availability, scaled from...
Authors
Mary Freeman, Zachary Bowen, Johnie Crance
Riverine resources: water needs and environmental effects analyses in the Alabama- Coosa- Tallapoosa and Apalachicola- Chattahoochee- Flint River basins Riverine resources: water needs and environmental effects analyses in the Alabama- Coosa- Tallapoosa and Apalachicola- Chattahoochee- Flint River basins
No abstract available.
Authors
Mary Freeman, J.M. Nestler, P.N. Johnson
Index of biotic integrity applied to a flow-regulated river system Index of biotic integrity applied to a flow-regulated river system
No abstract available.
Authors
Z.H. Bowen, Mary Freeman, D.L. Watson
Movements by two small fishes in a large stream Movements by two small fishes in a large stream
Movements by adult Percina nigrojasciata and juvenile Lepomis auritus were examined in a large Coastal Plain stream in the southeastern United States. I marked fishes with subcutaneous injections of acrylic paints to indicate capture location within a 550-m long study site. Recaptures over an 18-month period primarily occurred within 33m of the original capture location, suggesting long...
Authors
Mary Freeman
Habitat use by an endangered riverine fish and implications for species protection Habitat use by an endangered riverine fish and implications for species protection
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas 20 cm deep and with velocity 10 cm. s−1 near the substrate, occupying areas with cobble or gravel...
Authors
B. Freeman, Mary Freeman
Habitat use by an endangered riverine fish and implications for species protection Habitat use by an endangered riverine fish and implications for species protection
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas 20 cm deep and with velocity 10 cm. s−1 near the substrate, occupying areas with cobble or gravel...
Authors
B. Freeman, Mary Freeman
Evaluating impacts of stream flow alteration on warmwater fishes Evaluating impacts of stream flow alteration on warmwater fishes
No abstract available.
Authors
Mary Freeman, J.H. Crance
Effects of habitat availability on dispersion of a stream cyprinid Effects of habitat availability on dispersion of a stream cyprinid
We analyzed temporal changes in the dispersion of the rosyside dace,Clinostomus funduloides, (family Cyprinidae) in a headwater stream, to assess the role of habitat availability in promoting fish aggregation. The dace foraged alone and in groups of up to about 25 individuals, and dispersion varied significantly among monthly censuses conducted from May through December. In two of three...
Authors
Mary Freeman, Gary D. Grossman
Science and Products
Filter Total Items: 110
The Okefenokee Swamp: Invertebrate communities and foodwebs The Okefenokee Swamp: Invertebrate communities and foodwebs
No abstract available.
Authors
K.G. Porter, A. Bergstedt, Mary Freeman
Transferability of habitat suitability criteria: Response to comment Transferability of habitat suitability criteria: Response to comment
No abstract available.
Authors
Mary Freeman, Z.H. Bowen, K.D. Bovee
Assemblage organization in stream fishes: Effects of environmental variation and interspecific interactions 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...
Authors
Gary D. Grossman, R. E. Ratajczak, M. Crawford, Mary Freeman
Evaluation of generalized habitat criteria for assessing impacts of altered flow regimes on warmwater fishes Evaluation of generalized habitat criteria for assessing impacts of altered flow regimes on warmwater fishes
Assessing potential effects of flow regulation on southeastern warmwater fish assemblages is problematic because of high species richness and our poor knowledge of habitat requirements for most species. A previous attempt to reduce the complexity of describing habitat requirements for diverse assemblages defined five 'key habitat' types based on quantitative descriptions of depth...
Authors
Z.H. Bowen, Mary Freeman, K.D. Bovee
Transferability of habitat suitability criteria for fishes in warmwater streams Transferability of habitat suitability criteria for fishes in warmwater streams
We developed habitat suitability criteria and tested their transferability for nine fishes inhabiting unregulated Piedmont and Coastal Plain streams in Alabama. Criteria for optimal habitat were defined as those ranges of depth, velocity, substrate type, and cover type for which a species' suitability index (proportional abundance divided by proportional habitat availability, scaled from...
Authors
Mary Freeman, Zachary Bowen, Johnie Crance
Riverine resources: water needs and environmental effects analyses in the Alabama- Coosa- Tallapoosa and Apalachicola- Chattahoochee- Flint River basins Riverine resources: water needs and environmental effects analyses in the Alabama- Coosa- Tallapoosa and Apalachicola- Chattahoochee- Flint River basins
No abstract available.
Authors
Mary Freeman, J.M. Nestler, P.N. Johnson
Index of biotic integrity applied to a flow-regulated river system Index of biotic integrity applied to a flow-regulated river system
No abstract available.
Authors
Z.H. Bowen, Mary Freeman, D.L. Watson
Movements by two small fishes in a large stream Movements by two small fishes in a large stream
Movements by adult Percina nigrojasciata and juvenile Lepomis auritus were examined in a large Coastal Plain stream in the southeastern United States. I marked fishes with subcutaneous injections of acrylic paints to indicate capture location within a 550-m long study site. Recaptures over an 18-month period primarily occurred within 33m of the original capture location, suggesting long...
Authors
Mary Freeman
Habitat use by an endangered riverine fish and implications for species protection Habitat use by an endangered riverine fish and implications for species protection
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas 20 cm deep and with velocity 10 cm. s−1 near the substrate, occupying areas with cobble or gravel...
Authors
B. Freeman, Mary Freeman
Habitat use by an endangered riverine fish and implications for species protection Habitat use by an endangered riverine fish and implications for species protection
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas 20 cm deep and with velocity 10 cm. s−1 near the substrate, occupying areas with cobble or gravel...
Authors
B. Freeman, Mary Freeman
Evaluating impacts of stream flow alteration on warmwater fishes Evaluating impacts of stream flow alteration on warmwater fishes
No abstract available.
Authors
Mary Freeman, J.H. Crance
Effects of habitat availability on dispersion of a stream cyprinid Effects of habitat availability on dispersion of a stream cyprinid
We analyzed temporal changes in the dispersion of the rosyside dace,Clinostomus funduloides, (family Cyprinidae) in a headwater stream, to assess the role of habitat availability in promoting fish aggregation. The dace foraged alone and in groups of up to about 25 individuals, and dispersion varied significantly among monthly censuses conducted from May through December. In two of three...
Authors
Mary Freeman, Gary D. Grossman