James Nichols, Ph.D.
Dr. Jim Nichols conducts research on animal population dynamics and management
Recent Accomplishments
Education
- B.S. Wake Forest University, Biology, 1971
- M.S. Louisiana State University, Wildlife Management, 1973
- Ph.D. Michigan State University, Wildlife Ecology, 1976
Professional Studies/Experience
- Adaptive management and assessment of habitat changes on migratory birds
- Development of models of mallard population dynamics for adaptive harvest management
- Development of methods to estimate parameters associated with animal population dynamics
- Statistical methods for species richness estimation
- Technical Assistance -Tiger Monitoring and Population Research
- Development of methods for estimating patch occupancy and patch-dynamic parameters from detection-nondetection survey data
- Development of methods to estimate species richness and community-dynamic parameters from species list data
Mentorship/Outreach
Professional societies/affiliations/committees/editorial boardsScientific/Oral Presentations, Abstracts
Honors, awards, recognition, elected offices
- 2005 - U.S. Presidential Rank Award (Meritorious Senior Professional)
- 2004 - U.S. Geological Survey Meritorious Service Award
- 2004 - IFAS Scholar Award, University of Florida
- 1998 - Promoted to Senior Scientist, U.S. Geological Survey
- 1991 - The George W. Snedecor Award of the American Statistical Association
- 1991 - The Wildlife Society's Wildlife Publication Award for Monograph
- 1984 - Southeastern Section of the Wildlife Society, Outstanding Publication Award
Scientific/Oral Presentations, Abstracts
Science and Products
Filter Total Items: 401
Workshop summary: Species and population status and distribution
No abstract available.
Authors
J. D. Nichols, D.V. Derksen, R. L. Jarvis, John T. Ratti
Some considerations in modeling the mallard life cycle
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos). Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed relative to mallard population dynamics. Compensatory mortality is a poor
Authors
D. H. Johnson, J. D. Nichols, M.J. Conroy, L.M. Cowardin
Some considerations in modeling the mallard life cycle
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos}. Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed relative to mallard population dynamics. Compensatory mortality is a poor
Authors
D. H. Johnson, J. D. Nichols, M.J. Conroy, L.M. Cowardin
Sex specificity of behavioral dominance and fasting endurance in wintering canvasbacks: Experimental results
Hand-reared canvasbacks (Aythya valisineria) of varying sex ratios were maintained in pens during winter 1980-81 (3M-3F, 6M-0F, 0M-6F) and winter 1981-82 (4M-2F, 2M-4F) and fed two diets (control and stress). They were observed during feeding trials to determine intrasexual and intersexual aggressive activity. There was little evidence that either diet or sex ratio affected the total number of agg
Authors
M. C. Perry, J. D. Nichols, M.J. Conroy, H.H. Obrecht, B.K. Williams
Migration, Harvest, and Population Characteristics of Mourning Doves Banded in the Western Management Unit, 1964-1977
No abstract available.
Authors
R. E. Tomlinson, D.D. Dolton, H.M. Reeves, J. D. Nichols, L.A. McKibben
Distribution patterns during winter and fidelity to wintering areas of American black ducks
The distribution patterns during winter of American black ducks (Anas rubripes) were compared among age – sex classes using band recovery data. In addition, fidelity to wintering areas was compared between sexes and between coastal and inland wintering sites. We did not find evidence of age- or sex-specific differences in distribution patterns (P > 0.10). Black ducks exhibited a stronger fidelity
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines
Distribution patterns of American black duck and mallard winter band recoveries
We compared the distribution patterns of winter band recoveries of American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding areas. Young black ducks wintered northeast of young mallards but no differences in distribution patterns were detected between adult birds of the 2 species. Mallards exhibited greater temporal variation in distribution patterns and les
Authors
D.R. Diefenbach, J. D. Nichols, J. E. Hines
Postfledging survival of European starlings exposed as nestlings to an organophosphorus insecticide
To test the hypothesis that exposure to organophosphorus (OP) insecticides reduces postfledging survival of altricial birds, 16—d—old European Starlings (Sturnus vulgaris) were weighed and orally dosed with corn oil containing 6.0 mg of dicrotophos per kilogram of body mass or an equivalent exposure of pure corn oil (controls). Two days later, each survivor was weighed again and patagially tagged
Authors
K. L. Stromborg, C. E. Grue, J. D. Nichols, G. R. Hepp, J. E. Hines, H. C. Bourne
Age-specificity of black-capped chickadee survival rates: Analysis of capture-recapture data
The ornithological literature indicates a widespread belief in two generalizations about the age—specificity of avian survival rates: (1) survival rates of young birds for some period following fledging are lower than those of adults, and (2) after reaching adulthood survival rates are constant for birds of all ages. There is a growing body of evidence in support of the first generalization, altho
Authors
G. Loery, James D. Nichols, Kenneth H. Pollock, James E. Hines
The Husting dilemma: A methodological note
Recently, Gill (1985) discussed the interpretation of capture history data resulting from his own studies on the red-spotted newt, Notophthalmus viridescens , and work by Husting (1965) on spotted salamanders, Ambystoma maculatum. Gill (1985) noted that gaps in capture histories (years in which individuals were not captured, preceded and followed by years in which they were) could result from eit
Authors
James D. Nichols, G. R. Hepp, Kenneth H. Pollock, James E. Hines
Population ecology of the mallard VIII: Winter distribution patterns and survival rates of winter-banded mallards
In the present report we address questions about winter distribution patterns and survival rates of North American mallards Anas platyrhynchos. Inferences are based on analyses of banding and recovery data from both winter and preseason banding period. The primary wintering range of the mallard was dividded into 45 minor reference areas and 15 major reference areas which were used to summarize w
Authors
James D. Nichols, James E. Hines
Mallard mortality rates on key breeding and wintering areas
No abstract available.
Authors
R.J. Blohm, R. E. Reynolds, J.P. Bladen, J. D. Nichols, J. E. Hines, K. H. Pollock, R.T. Eberhardt
Science and Products
Filter Total Items: 401
Workshop summary: Species and population status and distribution
No abstract available.
Authors
J. D. Nichols, D.V. Derksen, R. L. Jarvis, John T. Ratti
Some considerations in modeling the mallard life cycle
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos). Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed relative to mallard population dynamics. Compensatory mortality is a poor
Authors
D. H. Johnson, J. D. Nichols, M.J. Conroy, L.M. Cowardin
Some considerations in modeling the mallard life cycle
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos}. Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed relative to mallard population dynamics. Compensatory mortality is a poor
Authors
D. H. Johnson, J. D. Nichols, M.J. Conroy, L.M. Cowardin
Sex specificity of behavioral dominance and fasting endurance in wintering canvasbacks: Experimental results
Hand-reared canvasbacks (Aythya valisineria) of varying sex ratios were maintained in pens during winter 1980-81 (3M-3F, 6M-0F, 0M-6F) and winter 1981-82 (4M-2F, 2M-4F) and fed two diets (control and stress). They were observed during feeding trials to determine intrasexual and intersexual aggressive activity. There was little evidence that either diet or sex ratio affected the total number of agg
Authors
M. C. Perry, J. D. Nichols, M.J. Conroy, H.H. Obrecht, B.K. Williams
Migration, Harvest, and Population Characteristics of Mourning Doves Banded in the Western Management Unit, 1964-1977
No abstract available.
Authors
R. E. Tomlinson, D.D. Dolton, H.M. Reeves, J. D. Nichols, L.A. McKibben
Distribution patterns during winter and fidelity to wintering areas of American black ducks
The distribution patterns during winter of American black ducks (Anas rubripes) were compared among age – sex classes using band recovery data. In addition, fidelity to wintering areas was compared between sexes and between coastal and inland wintering sites. We did not find evidence of age- or sex-specific differences in distribution patterns (P > 0.10). Black ducks exhibited a stronger fidelity
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines
Distribution patterns of American black duck and mallard winter band recoveries
We compared the distribution patterns of winter band recoveries of American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding areas. Young black ducks wintered northeast of young mallards but no differences in distribution patterns were detected between adult birds of the 2 species. Mallards exhibited greater temporal variation in distribution patterns and les
Authors
D.R. Diefenbach, J. D. Nichols, J. E. Hines
Postfledging survival of European starlings exposed as nestlings to an organophosphorus insecticide
To test the hypothesis that exposure to organophosphorus (OP) insecticides reduces postfledging survival of altricial birds, 16—d—old European Starlings (Sturnus vulgaris) were weighed and orally dosed with corn oil containing 6.0 mg of dicrotophos per kilogram of body mass or an equivalent exposure of pure corn oil (controls). Two days later, each survivor was weighed again and patagially tagged
Authors
K. L. Stromborg, C. E. Grue, J. D. Nichols, G. R. Hepp, J. E. Hines, H. C. Bourne
Age-specificity of black-capped chickadee survival rates: Analysis of capture-recapture data
The ornithological literature indicates a widespread belief in two generalizations about the age—specificity of avian survival rates: (1) survival rates of young birds for some period following fledging are lower than those of adults, and (2) after reaching adulthood survival rates are constant for birds of all ages. There is a growing body of evidence in support of the first generalization, altho
Authors
G. Loery, James D. Nichols, Kenneth H. Pollock, James E. Hines
The Husting dilemma: A methodological note
Recently, Gill (1985) discussed the interpretation of capture history data resulting from his own studies on the red-spotted newt, Notophthalmus viridescens , and work by Husting (1965) on spotted salamanders, Ambystoma maculatum. Gill (1985) noted that gaps in capture histories (years in which individuals were not captured, preceded and followed by years in which they were) could result from eit
Authors
James D. Nichols, G. R. Hepp, Kenneth H. Pollock, James E. Hines
Population ecology of the mallard VIII: Winter distribution patterns and survival rates of winter-banded mallards
In the present report we address questions about winter distribution patterns and survival rates of North American mallards Anas platyrhynchos. Inferences are based on analyses of banding and recovery data from both winter and preseason banding period. The primary wintering range of the mallard was dividded into 45 minor reference areas and 15 major reference areas which were used to summarize w
Authors
James D. Nichols, James E. Hines
Mallard mortality rates on key breeding and wintering areas
No abstract available.
Authors
R.J. Blohm, R. E. Reynolds, J.P. Bladen, J. D. Nichols, J. E. Hines, K. H. Pollock, R.T. Eberhardt