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: 409
The estimation of exchanges among populations or subpopulations
Capture-recapture methods for estimating rates of immigration, emigration, and movement among geographic strata are reviewed. We discuss likelihood-based estimation methods under models incorporating Markovian and non-Markovian movement. We briefly describe a computer program developed by Brownie et al. (1992) to carry out the necessary estimation and testing.
Authors
J. D. Nichols, C. Brownie, J. E. Hines, K. H. Pollock, J.B. Hestbeck
[Book review] Techniques for Wildlife Investigations: Design and Analysis of Capture Data, by J. R. Skalski and D. S. Robson
No abstract available.
Authors
J. D. Nichols
Capture-recapture studies for multiple strata including non-markovian transitions
We consider capture-recapture studies where release and recapture data are available from each of a number of strata on every capture occasion. Strata may, for example, be geographic locations or physiological states. Movement of animals among strata occurs with unknown probabilities, and estimation of these unknown transition probabilities is the objective. We describe a computer routine for c
Authors
C. Brownie, J. E. Hines, J. D. Nichols, K. H. Pollock, J.B. Hestbeck
Estimating transition probabilities for stage-based population projection matrices using capture-recapture data
In stage—based demography, animals are often categorized into size (or mass) classes, and size—based probabilities of surviving and changing mass classes must be estimated before demographic analyses can be conducted. In this paper, we develop two procedures for the estimation of mass transition probabilities from capture—recapture data. The first approach uses a multistate capture—recapture model
Authors
James D. Nichols, John R. Sauer, Kenneth H. Pollock, Jay B. Hestbeck
A stochastic population model of mid-continental mallards
We developed a simulation model that integrates infonnation on factors affecting the population dynamics of mallards in the mid-continental region of the United States. In the model we vary age, body mass, and reproductive and molt status of simulated females. Females use several types of nesting and foraging habitat in 15 geographic areas. Deterministic and stochastic events cause mortality or at
Authors
Rolf R. Koford, J.R. Sauer, D. H. Johnson, J. D. Nichols, M. D. Samuel
Population dynamics of breeding waterfowl
No abstract available.
Authors
D. H. Johnson, J. D. Nichols, M.D. Schwartz
A stochastic population model of mid-continental mallards
No abstract available.
Authors
Rolf R. Koford, J.R. Sauer, D. H. Johnson, J. D. Nichols, M. D. Samuel
Population dynamics of breeding waterfowl
No abstract available.
Authors
D. H. Johnson, J. D. Nichols, M.D. Schwartz
Capture-recapture models: Using marked animals to study population dynamics
No abstract available.
Authors
J. D. Nichols
Annual survival rates of adult and immature eastern population tundra swans
Tundra swans (Cygnus columbianus ) of the eastern population were neckbanded in Maryland, North Carolina, and Alaska from 1966 through 1990. These swans were resighted and recaptured during autumn, winter, and spring, 1966-1990. Although the original motivation for this study involved swan movements, we wanted to use the resulting data to test hypotheses about sources of variation in swan surviv
Authors
J. D. Nichols, J. Bart, R.J. Limpert, William J. L. Sladen, J. E. Hines
Science and Products
Filter Total Items: 409
The estimation of exchanges among populations or subpopulations
Capture-recapture methods for estimating rates of immigration, emigration, and movement among geographic strata are reviewed. We discuss likelihood-based estimation methods under models incorporating Markovian and non-Markovian movement. We briefly describe a computer program developed by Brownie et al. (1992) to carry out the necessary estimation and testing.
Authors
J. D. Nichols, C. Brownie, J. E. Hines, K. H. Pollock, J.B. Hestbeck
[Book review] Techniques for Wildlife Investigations: Design and Analysis of Capture Data, by J. R. Skalski and D. S. Robson
No abstract available.
Authors
J. D. Nichols
Capture-recapture studies for multiple strata including non-markovian transitions
We consider capture-recapture studies where release and recapture data are available from each of a number of strata on every capture occasion. Strata may, for example, be geographic locations or physiological states. Movement of animals among strata occurs with unknown probabilities, and estimation of these unknown transition probabilities is the objective. We describe a computer routine for c
Authors
C. Brownie, J. E. Hines, J. D. Nichols, K. H. Pollock, J.B. Hestbeck
Estimating transition probabilities for stage-based population projection matrices using capture-recapture data
In stage—based demography, animals are often categorized into size (or mass) classes, and size—based probabilities of surviving and changing mass classes must be estimated before demographic analyses can be conducted. In this paper, we develop two procedures for the estimation of mass transition probabilities from capture—recapture data. The first approach uses a multistate capture—recapture model
Authors
James D. Nichols, John R. Sauer, Kenneth H. Pollock, Jay B. Hestbeck
A stochastic population model of mid-continental mallards
We developed a simulation model that integrates infonnation on factors affecting the population dynamics of mallards in the mid-continental region of the United States. In the model we vary age, body mass, and reproductive and molt status of simulated females. Females use several types of nesting and foraging habitat in 15 geographic areas. Deterministic and stochastic events cause mortality or at
Authors
Rolf R. Koford, J.R. Sauer, D. H. Johnson, J. D. Nichols, M. D. Samuel
Population dynamics of breeding waterfowl
No abstract available.
Authors
D. H. Johnson, J. D. Nichols, M.D. Schwartz
A stochastic population model of mid-continental mallards
No abstract available.
Authors
Rolf R. Koford, J.R. Sauer, D. H. Johnson, J. D. Nichols, M. D. Samuel
Population dynamics of breeding waterfowl
No abstract available.
Authors
D. H. Johnson, J. D. Nichols, M.D. Schwartz
Capture-recapture models: Using marked animals to study population dynamics
No abstract available.
Authors
J. D. Nichols
Annual survival rates of adult and immature eastern population tundra swans
Tundra swans (Cygnus columbianus ) of the eastern population were neckbanded in Maryland, North Carolina, and Alaska from 1966 through 1990. These swans were resighted and recaptured during autumn, winter, and spring, 1966-1990. Although the original motivation for this study involved swan movements, we wanted to use the resulting data to test hypotheses about sources of variation in swan surviv
Authors
J. D. Nichols, J. Bart, R.J. Limpert, William J. L. Sladen, J. E. Hines