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: 418
Evaluation and experimentation with duck management strategies Evaluation and experimentation with duck management strategies
Our knowledge of the effects of hunting regulations on duck populations has been based largely on retrospective studies of historical data. We have reached the limits of what can be learned in this way. Future knowledge gains will likely come about only through experimentation and adaptive management.
Authors
J.D. Nichols, Fred A. Johnson
Model-based estimates of annual survival rate are preferable to observed maximum lifespan statistics for use in comparative life-history studies Model-based estimates of annual survival rate are preferable to observed maximum lifespan statistics for use in comparative life-history studies
Estimates of longevity are available for many animals, and are commonly used in comparative life-history analyses. We suggest that annual survival rate is a more appropriate life history parameter for most comparative life history analyses. Observed maximum lifespans estimate complicated functions of survival and sampling probabilities. Annual survival rate estimates derived from modern...
Authors
D.G. Krementz, J.R. Sauer, J.D. Nichols
Distribution patterns of American black duck and mallard winter band recoveries 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...
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines
Some considerations in modeling the mallard life cycle 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...
Authors
Douglas H. Johnson, J.D. Nichols, M.J. Conroy, L.M. Cowardin
Postfledging survival of European starlings exposed as nestlings to an organophosphorus insecticide 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...
Authors
K. L. Stromborg, C.E. Grue, J.D. Nichols, Gary R. Hepp, J.E. Hines, H. C. Bourne
Distribution patterns during winter and fidelity to wintering areas of American black ducks 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...
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines
Science and Products
Filter Total Items: 418
Evaluation and experimentation with duck management strategies Evaluation and experimentation with duck management strategies
Our knowledge of the effects of hunting regulations on duck populations has been based largely on retrospective studies of historical data. We have reached the limits of what can be learned in this way. Future knowledge gains will likely come about only through experimentation and adaptive management.
Authors
J.D. Nichols, Fred A. Johnson
Model-based estimates of annual survival rate are preferable to observed maximum lifespan statistics for use in comparative life-history studies Model-based estimates of annual survival rate are preferable to observed maximum lifespan statistics for use in comparative life-history studies
Estimates of longevity are available for many animals, and are commonly used in comparative life-history analyses. We suggest that annual survival rate is a more appropriate life history parameter for most comparative life history analyses. Observed maximum lifespans estimate complicated functions of survival and sampling probabilities. Annual survival rate estimates derived from modern...
Authors
D.G. Krementz, J.R. Sauer, J.D. Nichols
Distribution patterns of American black duck and mallard winter band recoveries 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...
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines
Some considerations in modeling the mallard life cycle 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...
Authors
Douglas H. Johnson, J.D. Nichols, M.J. Conroy, L.M. Cowardin
Postfledging survival of European starlings exposed as nestlings to an organophosphorus insecticide 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...
Authors
K. L. Stromborg, C.E. Grue, J.D. Nichols, Gary R. Hepp, J.E. Hines, H. C. Bourne
Distribution patterns during winter and fidelity to wintering areas of American black ducks 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...
Authors
Duane R. Diefenbach, James D. Nichols, James E. Hines