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
The relationship between harvest and survival rates of mallards: A straightforward approach with partitioned data sets The relationship between harvest and survival rates of mallards: A straightforward approach with partitioned data sets
We randomly partitioned mallard (Anas platyrhynchos) bandings and recoveries from each of a number of selected reference areas into 2 groups and estimated survival and harvest rates for each area and group. This procedure produced independent vectors of survival- and harvest-rate estimates, which were used to test the general hypothesis that mallard survival and harvest rates were...
Authors
James D. Nichols, James E. Hines
Estimating taxonomic diversity, extinction rates, and speciation rates from fossil data using capture-recapture models Estimating taxonomic diversity, extinction rates, and speciation rates from fossil data using capture-recapture models
Methods currently used to estimate taxonomic extinction probabilities from fossil data generally assume that the probability of encountering a specimen in a particular stratum, given that the taxon was extant in the time period and location represented by the stratum, either equals 1.0 or else is a constant for all strata. Methods used to estimate taxonomic diversity (number of taxa) and
Authors
J.D. Nichols, K. H. Pollock
Estimation methodology in contemporary small mammal capture-recapture studies Estimation methodology in contemporary small mammal capture-recapture studies
Estimators of population size and survival rate based on the Jolly-Seber capture-recapture model and the “enumeration method” are described. Enumeration estimators are shown to estimate complicated functions of capture and survival probabilities and, in the case of the population size estimator, population size. Frequently-listed reasons for preferring enumeration estimators are...
Authors
J.D. Nichols, K. H. Pollock
Sample size estimates: A preliminary analysis of sample sizes required for mark-recovery and mark-resighting studies of manatees (Trichechus manatus) in Florida Sample size estimates: A preliminary analysis of sample sizes required for mark-recovery and mark-resighting studies of manatees (Trichechus manatus) in Florida
No abstract available.
Authors
J.M. Packard, J.D. Nichols
Afternoon closure of hunting and recovery rates of mallards banded in Minnesota Afternoon closure of hunting and recovery rates of mallards banded in Minnesota
No abstract available.
Authors
Ronald E. Kirby, James E. Hines, James D. Nichols
Factors affecting the distribution of mallards wintering in the Mississippi alluvial valley Factors affecting the distribution of mallards wintering in the Mississippi alluvial valley
The Mississippi Alluvial Valley (MAV) is the principal wintering area for Mallards (Anas platyrhynchos) in the Mississippi Flyway. Here, we consider it a distinct habitat (sensu Fretwell 1972), i.e. fitness is relatively homogeneous among ducks within the MAV but different from that of ducks in other such habitats. We analyzed recovery distributions of Mallards banded preseason (July...
Authors
James D. Nichols, Kenneth J. Reinecke, James E. Hines
Science and Products
Filter Total Items: 417
The relationship between harvest and survival rates of mallards: A straightforward approach with partitioned data sets The relationship between harvest and survival rates of mallards: A straightforward approach with partitioned data sets
We randomly partitioned mallard (Anas platyrhynchos) bandings and recoveries from each of a number of selected reference areas into 2 groups and estimated survival and harvest rates for each area and group. This procedure produced independent vectors of survival- and harvest-rate estimates, which were used to test the general hypothesis that mallard survival and harvest rates were...
Authors
James D. Nichols, James E. Hines
Estimating taxonomic diversity, extinction rates, and speciation rates from fossil data using capture-recapture models Estimating taxonomic diversity, extinction rates, and speciation rates from fossil data using capture-recapture models
Methods currently used to estimate taxonomic extinction probabilities from fossil data generally assume that the probability of encountering a specimen in a particular stratum, given that the taxon was extant in the time period and location represented by the stratum, either equals 1.0 or else is a constant for all strata. Methods used to estimate taxonomic diversity (number of taxa) and
Authors
J.D. Nichols, K. H. Pollock
Estimation methodology in contemporary small mammal capture-recapture studies Estimation methodology in contemporary small mammal capture-recapture studies
Estimators of population size and survival rate based on the Jolly-Seber capture-recapture model and the “enumeration method” are described. Enumeration estimators are shown to estimate complicated functions of capture and survival probabilities and, in the case of the population size estimator, population size. Frequently-listed reasons for preferring enumeration estimators are...
Authors
J.D. Nichols, K. H. Pollock
Sample size estimates: A preliminary analysis of sample sizes required for mark-recovery and mark-resighting studies of manatees (Trichechus manatus) in Florida Sample size estimates: A preliminary analysis of sample sizes required for mark-recovery and mark-resighting studies of manatees (Trichechus manatus) in Florida
No abstract available.
Authors
J.M. Packard, J.D. Nichols
Afternoon closure of hunting and recovery rates of mallards banded in Minnesota Afternoon closure of hunting and recovery rates of mallards banded in Minnesota
No abstract available.
Authors
Ronald E. Kirby, James E. Hines, James D. Nichols
Factors affecting the distribution of mallards wintering in the Mississippi alluvial valley Factors affecting the distribution of mallards wintering in the Mississippi alluvial valley
The Mississippi Alluvial Valley (MAV) is the principal wintering area for Mallards (Anas platyrhynchos) in the Mississippi Flyway. Here, we consider it a distinct habitat (sensu Fretwell 1972), i.e. fitness is relatively homogeneous among ducks within the MAV but different from that of ducks in other such habitats. We analyzed recovery distributions of Mallards banded preseason (July...
Authors
James D. Nichols, Kenneth J. Reinecke, James E. Hines