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
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
Mallard mortality rates on key breeding and wintering areas Mallard mortality rates on key breeding and wintering areas
No abstract available.
Authors
R.J. Blohm, R. E. Reynolds, Judith P. Bladen, J.D. Nichols, J.E. Hines, K. H. Pollock, R.T. Eberhardt
Parasitization of meadow voles, Microtus pennsylvanicus (ORD), by American dog ticks, Dermacentor variabilis (Say), and adult tick movement during high host density 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...
Authors
J. F. Carroll, J.D. Nichols
Physiological condition of autumn-banded mallards and its relationship to hunting vulnerability Physiological condition of autumn-banded mallards and its relationship to hunting vulnerability
An important topic of waterfowl ecology concerns the relationship between the physiological condition of ducks during the nonbreeding season and fitness, i.e., survival and future reproductive success. We investigated this subject using direct band recovery records of mallards (Anas platyrhynchos) banded in autumn (1 Oct-15 Dec) 1981-83 in the Mississippi Alluvial Valley (MAV) [USA]. A...
Authors
Gary R. Hepp, Robert J. Blohm, Robert E. Reynolds, James E. Hines, James D. Nichols
The role of heterogeneity in animal population dynamics The role of heterogeneity in animal population dynamics
No abstract available.
Authors
Douglas H. Johnson, K.P. Burnham, J.D. Nichols
Effect of Orthene on an unconfined population of the meadow vole (Microtus pennsylvanicus) Effect of Orthene on an unconfined population of the meadow vole (Microtus pennsylvanicus)
The possible impact on Microtus pennsylvanicus of ground applications of Orthene® insecticide was investigated in old-field habitats in northern Maryland during 1982 and 1983. The treatment grids in 1982 and 1983 were sprayed at 0.62 and 0.82 kg active ingredient/ha, respectively. A capture–recapture design robust to unequal capture probabilities was utilized to estimate population size...
Authors
David A. Jett, James D. Nichols, James E. Hines
Science and Products
Filter Total Items: 418
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
Mallard mortality rates on key breeding and wintering areas Mallard mortality rates on key breeding and wintering areas
No abstract available.
Authors
R.J. Blohm, R. E. Reynolds, Judith P. Bladen, J.D. Nichols, J.E. Hines, K. H. Pollock, R.T. Eberhardt
Parasitization of meadow voles, Microtus pennsylvanicus (ORD), by American dog ticks, Dermacentor variabilis (Say), and adult tick movement during high host density 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...
Authors
J. F. Carroll, J.D. Nichols
Physiological condition of autumn-banded mallards and its relationship to hunting vulnerability Physiological condition of autumn-banded mallards and its relationship to hunting vulnerability
An important topic of waterfowl ecology concerns the relationship between the physiological condition of ducks during the nonbreeding season and fitness, i.e., survival and future reproductive success. We investigated this subject using direct band recovery records of mallards (Anas platyrhynchos) banded in autumn (1 Oct-15 Dec) 1981-83 in the Mississippi Alluvial Valley (MAV) [USA]. A...
Authors
Gary R. Hepp, Robert J. Blohm, Robert E. Reynolds, James E. Hines, James D. Nichols
The role of heterogeneity in animal population dynamics The role of heterogeneity in animal population dynamics
No abstract available.
Authors
Douglas H. Johnson, K.P. Burnham, J.D. Nichols
Effect of Orthene on an unconfined population of the meadow vole (Microtus pennsylvanicus) Effect of Orthene on an unconfined population of the meadow vole (Microtus pennsylvanicus)
The possible impact on Microtus pennsylvanicus of ground applications of Orthene® insecticide was investigated in old-field habitats in northern Maryland during 1982 and 1983. The treatment grids in 1982 and 1983 were sprayed at 0.62 and 0.82 kg active ingredient/ha, respectively. A capture–recapture design robust to unequal capture probabilities was utilized to estimate population size...
Authors
David A. Jett, James D. Nichols, James E. Hines