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
Status and trends in demography of northern spotted owls, 1985-2003 Status and trends in demography of northern spotted owls, 1985-2003
We analyzed demographic data from northern spotted owls (Strix occidentalis caurina) from 14 study areas in Washington, Oregon, and California for 1985-2003. The purpose of our analyses was to provide an assessment of the status and trends of northern spotted owl populations throughout most of their geographic range. The 14 study areas made up approximately 12% of the range of the...
Authors
R.G. Anthony, E.D. Forsman, A.B. Franklin, David R. Anderson, K.P. Burnham, Gary C. White, C.J. Schwarz, J.D. Nichols, J.E. Hines, G.S. Olson, S.H. Ackers, L.S. Andrews, B.L. Biswell, P.C. Carlson, L.V. Diller, K.M. Dugger, K.E. Fehring, T.L. Fleming, R.P. Gerhardt, S.A. Gremel, R. J. Gutierrez, P.J. Happe, D.R. Herter, J.M. Higley, R.B. Horn, L.L. Irwin, P.J. Loschl, J.A. Reid, S.G. Sovern
Comparative dynamics of avian communities across edges and interiors of North American ecoregions Comparative dynamics of avian communities across edges and interiors of North American ecoregions
Aim Based on a priori hypotheses, we developed predictions about how avian communities might differ at the edges vs. interiors of ecoregions. Specifically, we predicted lower species richness and greater local turnover and extinction probabilities for regional edges. We tested these predictions using North American Breeding Bird Survey (BBS) data across nine ecoregions over a 20-year...
Authors
K.K. Karanth, J.D. Nichols, J.R. Sauer, J.E. Hines
Individual quality, survival variation and patterns of phenotypic selection on body condition and timing of nesting in birds Individual quality, survival variation and patterns of phenotypic selection on body condition and timing of nesting in birds
Questions about individual variation in “quality” and fitness are of great interest to evolutionary and population ecologists. Such variation can be investigated using either a random effects approach or an approach that relies on identifying observable traits that are themselves correlated with fitness components. We used the latter approach with data from 1,925 individual females of...
Authors
Peter Blums, James D. Nichols, James E. Hines, Mark S. Lindberg, Aivars Mednis
Improving inferences in population studies of rare species that are detected imperfectly Improving inferences in population studies of rare species that are detected imperfectly
For the vast majority of cases, it is highly unlikely that all the individuals of a population will be encountered during a study. Furthermore, it is unlikely that a constant fraction of the population is encountered over times, locations, or species to be compared. Hence, simple counts usually will not be good indices of population size. We recommend that detection probabilities (the...
Authors
Darry I. MacKenzie, James D. Nichols, N. Sutton, K. Kawanishi, Larissa Bailey
Assessing spatial coupling in complex population dynamics using mutual prediction and continuity statistics Assessing spatial coupling in complex population dynamics using mutual prediction and continuity statistics
A number of important questions in ecology involve the possibility of interactions or ?coupling? among potential components of ecological systems. The basic question of whether two components are coupled (exhibit dynamical interdependence) is relevant to investigations of movement of animals over space, population regulation, food webs and trophic interactions, and is also useful in the...
Authors
J.M. Nichols, L. Moniz, J.D. Nichols, L.M. Pecora, E. Cooch
Modern open-population capture-recapture models Modern open-population capture-recapture models
No abstract available.
Authors
J.D. Nichols
Science and Products
Filter Total Items: 418
Status and trends in demography of northern spotted owls, 1985-2003 Status and trends in demography of northern spotted owls, 1985-2003
We analyzed demographic data from northern spotted owls (Strix occidentalis caurina) from 14 study areas in Washington, Oregon, and California for 1985-2003. The purpose of our analyses was to provide an assessment of the status and trends of northern spotted owl populations throughout most of their geographic range. The 14 study areas made up approximately 12% of the range of the...
Authors
R.G. Anthony, E.D. Forsman, A.B. Franklin, David R. Anderson, K.P. Burnham, Gary C. White, C.J. Schwarz, J.D. Nichols, J.E. Hines, G.S. Olson, S.H. Ackers, L.S. Andrews, B.L. Biswell, P.C. Carlson, L.V. Diller, K.M. Dugger, K.E. Fehring, T.L. Fleming, R.P. Gerhardt, S.A. Gremel, R. J. Gutierrez, P.J. Happe, D.R. Herter, J.M. Higley, R.B. Horn, L.L. Irwin, P.J. Loschl, J.A. Reid, S.G. Sovern
Comparative dynamics of avian communities across edges and interiors of North American ecoregions Comparative dynamics of avian communities across edges and interiors of North American ecoregions
Aim Based on a priori hypotheses, we developed predictions about how avian communities might differ at the edges vs. interiors of ecoregions. Specifically, we predicted lower species richness and greater local turnover and extinction probabilities for regional edges. We tested these predictions using North American Breeding Bird Survey (BBS) data across nine ecoregions over a 20-year...
Authors
K.K. Karanth, J.D. Nichols, J.R. Sauer, J.E. Hines
Individual quality, survival variation and patterns of phenotypic selection on body condition and timing of nesting in birds Individual quality, survival variation and patterns of phenotypic selection on body condition and timing of nesting in birds
Questions about individual variation in “quality” and fitness are of great interest to evolutionary and population ecologists. Such variation can be investigated using either a random effects approach or an approach that relies on identifying observable traits that are themselves correlated with fitness components. We used the latter approach with data from 1,925 individual females of...
Authors
Peter Blums, James D. Nichols, James E. Hines, Mark S. Lindberg, Aivars Mednis
Improving inferences in population studies of rare species that are detected imperfectly Improving inferences in population studies of rare species that are detected imperfectly
For the vast majority of cases, it is highly unlikely that all the individuals of a population will be encountered during a study. Furthermore, it is unlikely that a constant fraction of the population is encountered over times, locations, or species to be compared. Hence, simple counts usually will not be good indices of population size. We recommend that detection probabilities (the...
Authors
Darry I. MacKenzie, James D. Nichols, N. Sutton, K. Kawanishi, Larissa Bailey
Assessing spatial coupling in complex population dynamics using mutual prediction and continuity statistics Assessing spatial coupling in complex population dynamics using mutual prediction and continuity statistics
A number of important questions in ecology involve the possibility of interactions or ?coupling? among potential components of ecological systems. The basic question of whether two components are coupled (exhibit dynamical interdependence) is relevant to investigations of movement of animals over space, population regulation, food webs and trophic interactions, and is also useful in the...
Authors
J.M. Nichols, L. Moniz, J.D. Nichols, L.M. Pecora, E. Cooch
Modern open-population capture-recapture models Modern open-population capture-recapture models
No abstract available.
Authors
J.D. Nichols