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
Juvenile survival and natal vs. non-natal colony size recruitment of breeding roseate terns at Falkner Island, Connecticut
No abstract available.
Authors
J. A. Spendelow, J. D. Nichols
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
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 variation for
Authors
J. D. Nichols, H.H. Obrecht, J. E. Hines
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 negligible.
Authors
A.R. Woodward, T.C. Hines, C.L. Abercrombie, J. D. Nichols
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 estimation metho
Authors
David A. Jett, J. D. Nichols
Density fluctuations in a meadow vole population at the Patuxent Wildlife Research Center
No abstract available.
Authors
David A. Jett, J. D. Nichols
The need for experiments to understand population dynamics of American black ducks
No abstract available.
Authors
D.R. Anderson, K.P. Burnham, J. D. Nichols, M.J. Conroy
Parasitization of meadow voles, Microtus pennsylvanicus (ORD), by American dog ticks, Dermacentor variabilis (Say), and adult tick movement during high host density
The numbers of host-seeking adult American dog ticks, Dermacentor variabilis (Say), in a sweet gum field in Maryland reflected changes in the population density of a host species, the meadow vole, Microtus pennsylvanicus (Ord), which within 1.5 yr fell from an estimated 157 to 8 voles on a 0.8 ha grid. During high vole density, there was no significant difference (P > 0.05) in tick burdens between
Authors
J. F. Carroll, J. D. Nichols
Science and Products
Filter Total Items: 409
Juvenile survival and natal vs. non-natal colony size recruitment of breeding roseate terns at Falkner Island, Connecticut
No abstract available.
Authors
J. A. Spendelow, J. D. Nichols
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
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 variation for
Authors
J. D. Nichols, H.H. Obrecht, J. E. Hines
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 negligible.
Authors
A.R. Woodward, T.C. Hines, C.L. Abercrombie, J. D. Nichols
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 estimation metho
Authors
David A. Jett, J. D. Nichols
Density fluctuations in a meadow vole population at the Patuxent Wildlife Research Center
No abstract available.
Authors
David A. Jett, J. D. Nichols
The need for experiments to understand population dynamics of American black ducks
No abstract available.
Authors
D.R. Anderson, K.P. Burnham, J. D. Nichols, M.J. Conroy
Parasitization of meadow voles, Microtus pennsylvanicus (ORD), by American dog ticks, Dermacentor variabilis (Say), and adult tick movement during high host density
The numbers of host-seeking adult American dog ticks, Dermacentor variabilis (Say), in a sweet gum field in Maryland reflected changes in the population density of a host species, the meadow vole, Microtus pennsylvanicus (Ord), which within 1.5 yr fell from an estimated 157 to 8 voles on a 0.8 ha grid. During high vole density, there was no significant difference (P > 0.05) in tick burdens between
Authors
J. F. Carroll, J. D. Nichols