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: 417
Workshop summary: Species and population status and distribution 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 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
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
Survival and band recovery rates of sympatric American black ducks and mallards Survival and band recovery rates of sympatric American black ducks and mallards
Banding and recovery data from American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding or wintering areas over the same time periods were used to estimate annual survival and band recovery rates. Recovery rates, based on preseason bandings, were very similar for sympatric black ducks and mallards and exhibited similar patterns of year-to-year...
Authors
James D. Nichols, Holliday H. Obrecht, James E. Hines
Survival of young American alligators on a Florida lake Survival of young American alligators on a Florida lake
A capture-recapture study was conducted on Orange Lake, Florida, from 1979 through 1984 to estimate survival rates of young in an American alligator (Alligator mississippiensis) populations. Hatchlings remained together in sibling groups (pods) for at least their 1st year and then began to disperse during their 2nd spring and summer. Mortality through mid-November of their 1st year was...
Authors
Allan R. Woodward, Tommy C. Hines, C.L. Abercrombie, James D. Nichols
Age-specificity of black-capped chickadee survival rates: Analysis of capture-recapture data 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...
Authors
G. Loery, James D. Nichols, Kenneth H. Pollock, James E. Hines
The Husting dilemma: A methodological note 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...
Authors
James D. Nichols, Gary R. Hepp, Kenneth H. Pollock, James E. Hines
Density fluctuations in a meadow vole population at the Patuxent Wildlife Research Center Density fluctuations in a meadow vole population at the Patuxent Wildlife Research Center
No abstract available.
Authors
David A. Jett, J.D. Nichols
Population ecology of the mallard VIII: Winter distribution patterns and survival rates of winter-banded mallards 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...
Authors
James D. Nichols, James E. Hines
Population models and crocodile management Population models and crocodile management
No abstract available.
Authors
J.D. Nichols
The need for experiments to understand population dynamics of American black ducks The need for experiments to understand population dynamics of American black ducks
No abstract available.
Authors
David R. Anderson, K.P. Burnham, J.D. Nichols, M.J. Conroy
A field comparison of nested grid and trapping web density estimators A field comparison of nested grid and trapping web density estimators
The usefulness of capture-recapture estimators in any field study will depend largely on underlying model assumptions and on how closely these assumptions approximate the actual field situation. Evaluation of estimator performance under real-world field conditions is often a difficult matter, although several approaches are possible. Perhaps the best approach involves use of the...
Authors
David A. Jett, J.D. Nichols
Science and Products
Filter Total Items: 417
Workshop summary: Species and population status and distribution 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 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
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
Survival and band recovery rates of sympatric American black ducks and mallards Survival and band recovery rates of sympatric American black ducks and mallards
Banding and recovery data from American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding or wintering areas over the same time periods were used to estimate annual survival and band recovery rates. Recovery rates, based on preseason bandings, were very similar for sympatric black ducks and mallards and exhibited similar patterns of year-to-year...
Authors
James D. Nichols, Holliday H. Obrecht, James E. Hines
Survival of young American alligators on a Florida lake Survival of young American alligators on a Florida lake
A capture-recapture study was conducted on Orange Lake, Florida, from 1979 through 1984 to estimate survival rates of young in an American alligator (Alligator mississippiensis) populations. Hatchlings remained together in sibling groups (pods) for at least their 1st year and then began to disperse during their 2nd spring and summer. Mortality through mid-November of their 1st year was...
Authors
Allan R. Woodward, Tommy C. Hines, C.L. Abercrombie, James D. Nichols
Age-specificity of black-capped chickadee survival rates: Analysis of capture-recapture data 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...
Authors
G. Loery, James D. Nichols, Kenneth H. Pollock, James E. Hines
The Husting dilemma: A methodological note 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...
Authors
James D. Nichols, Gary R. Hepp, Kenneth H. Pollock, James E. Hines
Density fluctuations in a meadow vole population at the Patuxent Wildlife Research Center Density fluctuations in a meadow vole population at the Patuxent Wildlife Research Center
No abstract available.
Authors
David A. Jett, J.D. Nichols
Population ecology of the mallard VIII: Winter distribution patterns and survival rates of winter-banded mallards 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...
Authors
James D. Nichols, James E. Hines
Population models and crocodile management Population models and crocodile management
No abstract available.
Authors
J.D. Nichols
The need for experiments to understand population dynamics of American black ducks The need for experiments to understand population dynamics of American black ducks
No abstract available.
Authors
David R. Anderson, K.P. Burnham, J.D. Nichols, M.J. Conroy
A field comparison of nested grid and trapping web density estimators A field comparison of nested grid and trapping web density estimators
The usefulness of capture-recapture estimators in any field study will depend largely on underlying model assumptions and on how closely these assumptions approximate the actual field situation. Evaluation of estimator performance under real-world field conditions is often a difficult matter, although several approaches are possible. Perhaps the best approach involves use of the...
Authors
David A. Jett, J.D. Nichols