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
Estimates of population change in selected species of tropical birds using mark-recapture data Estimates of population change in selected species of tropical birds using mark-recapture data
The population biology of tropical birds is known for a only small sample of species; especially in the Neotropics. Robust estimates of parameters such as survival rate and finite rate of population change (A) are crucial for conservation purposes and useful for studies of avian life histories. We used methods developed by Pradel (1996, Biometrics 52:703-709) to estimate A for 10 species...
Authors
J. Brawn, J.D. Nichols, J.E. Hines, J. Nesbitt
Simultaneous use of mark-recapture and radiotelemetry to estimate survival, movement, and capture rates Simultaneous use of mark-recapture and radiotelemetry to estimate survival, movement, and capture rates
Biologists often estimate separate survival and movement rates from radio-telemetry and mark-recapture data from the same study population. We describe a method for combining these data types in a single model to obtain joint, potentially less biased estimates of survival and movement that use all available data. We furnish an example using wood thrushes (Hylocichla mustelina) captured...
Authors
L.A. Powell, M.J. Conroy, J.E. Hines, J.D. Nichols, D.G. Krementz
A double-observer approach for estimating detection probability and abundance from point counts A double-observer approach for estimating detection probability and abundance from point counts
Although point counts are frequently used in ornithological studies, basic assumptions about detection probabilities often are untested. We apply a double-observer approach developed to estimate detection probabilities for aerial surveys (Cook and Jacobson 1979) to avian point counts. At each point count, a designated 'primary' observer indicates to another ('secondary') observer all...
Authors
J.D. Nichols, J.E. Hines, J.R. Sauer, F.W. Fallon, J.E. Fallon, P.J. Heglund
Relative species richness and community completeness: avian communities and urbanization in the mid-Atlantic states Relative species richness and community completeness: avian communities and urbanization in the mid-Atlantic states
The idea that local factors govern local richness has been dominant for years, but recent theoretical and empirical studies have stressed the influence of regional factors on local richness. Fewer species at a site could reflect not only the influence of local factors, but also a smaller regional pool. The possible dependency of local richness on the regional pool should be taken into...
Authors
E. Cam, J.D. Nichols, J.R. Sauer, J.E. Hines, C.H. Flather
Geographic analysis of species richness and community attributes of forest birds from survey data in the mid-Atlantic integrated assessment region Geographic analysis of species richness and community attributes of forest birds from survey data in the mid-Atlantic integrated assessment region
Species richness of local communities is a state variable commonly used in community ecology and conservation biology. Investigation of spatial and temporal variations in richness and identification of factors associated with these variations form a basis for specifying management plans, evaluating these plans, and for testing hypotheses of theoretical interest. However, estimation of...
Authors
Emmanuelle Cam, John R. Sauer, James D. Nichols, James E. Hines, Curtis H. Flather
The AOU Conservation Committee Review of the biology, status, and management of Cape Sable Seaside Sparrows: Final report The AOU Conservation Committee Review of the biology, status, and management of Cape Sable Seaside Sparrows: Final report
The Cape Sable Seaside Sparrow (Ammodramus maritimus mirabilis) was listed as an original member of the federal list of endangered species in 1968. It is restricted to seasonally flooded prairies of extreme southern Florida and is disjunct from all other conspecific breeding populations (Kushlan et al 1982, McDonald 1988). Since the subspecies was described in 1919, its populations have...
Authors
J. R. Walters, S.R. Beissenger, J.W. Fitzpatrick, R. Greenberg, J.D. Nichols, H.R. Pulliam, D.W. Winkler
Science and Products
Filter Total Items: 418
Estimates of population change in selected species of tropical birds using mark-recapture data Estimates of population change in selected species of tropical birds using mark-recapture data
The population biology of tropical birds is known for a only small sample of species; especially in the Neotropics. Robust estimates of parameters such as survival rate and finite rate of population change (A) are crucial for conservation purposes and useful for studies of avian life histories. We used methods developed by Pradel (1996, Biometrics 52:703-709) to estimate A for 10 species...
Authors
J. Brawn, J.D. Nichols, J.E. Hines, J. Nesbitt
Simultaneous use of mark-recapture and radiotelemetry to estimate survival, movement, and capture rates Simultaneous use of mark-recapture and radiotelemetry to estimate survival, movement, and capture rates
Biologists often estimate separate survival and movement rates from radio-telemetry and mark-recapture data from the same study population. We describe a method for combining these data types in a single model to obtain joint, potentially less biased estimates of survival and movement that use all available data. We furnish an example using wood thrushes (Hylocichla mustelina) captured...
Authors
L.A. Powell, M.J. Conroy, J.E. Hines, J.D. Nichols, D.G. Krementz
A double-observer approach for estimating detection probability and abundance from point counts A double-observer approach for estimating detection probability and abundance from point counts
Although point counts are frequently used in ornithological studies, basic assumptions about detection probabilities often are untested. We apply a double-observer approach developed to estimate detection probabilities for aerial surveys (Cook and Jacobson 1979) to avian point counts. At each point count, a designated 'primary' observer indicates to another ('secondary') observer all...
Authors
J.D. Nichols, J.E. Hines, J.R. Sauer, F.W. Fallon, J.E. Fallon, P.J. Heglund
Relative species richness and community completeness: avian communities and urbanization in the mid-Atlantic states Relative species richness and community completeness: avian communities and urbanization in the mid-Atlantic states
The idea that local factors govern local richness has been dominant for years, but recent theoretical and empirical studies have stressed the influence of regional factors on local richness. Fewer species at a site could reflect not only the influence of local factors, but also a smaller regional pool. The possible dependency of local richness on the regional pool should be taken into...
Authors
E. Cam, J.D. Nichols, J.R. Sauer, J.E. Hines, C.H. Flather
Geographic analysis of species richness and community attributes of forest birds from survey data in the mid-Atlantic integrated assessment region Geographic analysis of species richness and community attributes of forest birds from survey data in the mid-Atlantic integrated assessment region
Species richness of local communities is a state variable commonly used in community ecology and conservation biology. Investigation of spatial and temporal variations in richness and identification of factors associated with these variations form a basis for specifying management plans, evaluating these plans, and for testing hypotheses of theoretical interest. However, estimation of...
Authors
Emmanuelle Cam, John R. Sauer, James D. Nichols, James E. Hines, Curtis H. Flather
The AOU Conservation Committee Review of the biology, status, and management of Cape Sable Seaside Sparrows: Final report The AOU Conservation Committee Review of the biology, status, and management of Cape Sable Seaside Sparrows: Final report
The Cape Sable Seaside Sparrow (Ammodramus maritimus mirabilis) was listed as an original member of the federal list of endangered species in 1968. It is restricted to seasonally flooded prairies of extreme southern Florida and is disjunct from all other conspecific breeding populations (Kushlan et al 1982, McDonald 1988). Since the subspecies was described in 1919, its populations have...
Authors
J. R. Walters, S.R. Beissenger, J.W. Fitzpatrick, R. Greenberg, J.D. Nichols, H.R. Pulliam, D.W. Winkler