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
Estimating breeding proportions and testing hypotheses about costs of reproduction with capture-recapture data Estimating breeding proportions and testing hypotheses about costs of reproduction with capture-recapture data
The proportion of animals in a population that breeds is an important determinant of population growth rate. Usual estimates of this quantity from field sampling data assume that the probability of appearing in the capture or count statistic is the same for animals that do and do not breed. A similar assumption is required by most existing methods used to test ecologically interesting...
Authors
James D. Nichols, James E. Hines, Kenneth H. Pollock, Robert L. Hinz, William A. Link
Retention of web tags and plasticine-filled leg bands applied to day-old ducklings Retention of web tags and plasticine-filled leg bands applied to day-old ducklings
A new plasticine-filled leg band was developed for use in banding dayold ducklings. These bands permit inference about early survival that is not possible from banding of older young in standard operations. Two double-marking experiments with web tags and the new leg bands indicated a high retention rate for the leg bands. In contrast, several web tags were lost, permitting an analysis...
Authors
Peter Blums, Aivars Mednis, James D. Nichols
On the importance of sampling variance to investigations of temporal variation in animal population size On the importance of sampling variance to investigations of temporal variation in animal population size
Our purpose here is to emphasize the need to properly deal with sampling variance when studying population variability and to present a means of doing so. We present an estimator for temporal variance of population size for the general case in which there are both sampling variances and covariances associated with estimates of population size. We illustrate the estimation approach with a...
Authors
W.A. Link, J.D. Nichols
Sources of variation in loss rates of color bands applied to adult roseate terns (Sterna dougallii) in the western North Atlantic Sources of variation in loss rates of color bands applied to adult roseate terns (Sterna dougallii) in the western North Atlantic
A model-based analysis was done to test several hypotheses concerning the rates of loss of butt-ended color bands placed on adult Roseate Terns (Sterna dougallii) in the western North Atlantic. These birds were captured and color banded from 1987-1991 at four colony sites, and recaptured from 1989-1992 as part of a study of the population dynamics of this species. Two types of color...
Authors
J. A. Spendelow, J. Burger, I.C.T. Nisbet, J.D. Nichols, J.E. Hines, H. Hays, G.D. Cormons, M. Gochfeld
Estimating the number of animals in wildlife populations Estimating the number of animals in wildlife populations
No abstract available.
Authors
R.A. Lancia, J.D. Nichols, K. H. Pollock
Science and Products
Filter Total Items: 418
Estimating breeding proportions and testing hypotheses about costs of reproduction with capture-recapture data Estimating breeding proportions and testing hypotheses about costs of reproduction with capture-recapture data
The proportion of animals in a population that breeds is an important determinant of population growth rate. Usual estimates of this quantity from field sampling data assume that the probability of appearing in the capture or count statistic is the same for animals that do and do not breed. A similar assumption is required by most existing methods used to test ecologically interesting...
Authors
James D. Nichols, James E. Hines, Kenneth H. Pollock, Robert L. Hinz, William A. Link
Retention of web tags and plasticine-filled leg bands applied to day-old ducklings Retention of web tags and plasticine-filled leg bands applied to day-old ducklings
A new plasticine-filled leg band was developed for use in banding dayold ducklings. These bands permit inference about early survival that is not possible from banding of older young in standard operations. Two double-marking experiments with web tags and the new leg bands indicated a high retention rate for the leg bands. In contrast, several web tags were lost, permitting an analysis...
Authors
Peter Blums, Aivars Mednis, James D. Nichols
On the importance of sampling variance to investigations of temporal variation in animal population size On the importance of sampling variance to investigations of temporal variation in animal population size
Our purpose here is to emphasize the need to properly deal with sampling variance when studying population variability and to present a means of doing so. We present an estimator for temporal variance of population size for the general case in which there are both sampling variances and covariances associated with estimates of population size. We illustrate the estimation approach with a...
Authors
W.A. Link, J.D. Nichols
Sources of variation in loss rates of color bands applied to adult roseate terns (Sterna dougallii) in the western North Atlantic Sources of variation in loss rates of color bands applied to adult roseate terns (Sterna dougallii) in the western North Atlantic
A model-based analysis was done to test several hypotheses concerning the rates of loss of butt-ended color bands placed on adult Roseate Terns (Sterna dougallii) in the western North Atlantic. These birds were captured and color banded from 1987-1991 at four colony sites, and recaptured from 1989-1992 as part of a study of the population dynamics of this species. Two types of color...
Authors
J. A. Spendelow, J. Burger, I.C.T. Nisbet, J.D. Nichols, J.E. Hines, H. Hays, G.D. Cormons, M. Gochfeld
Estimating the number of animals in wildlife populations Estimating the number of animals in wildlife populations
No abstract available.
Authors
R.A. Lancia, J.D. Nichols, K. H. Pollock