Patuxent Wildlife Research Center

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Endangered Species - current studies

Sarah Converse

Email: sconverse@usgs.gov

Areas of Study

Ecology and Management of Wild and Captive Whooping Cranes

Population Viability of the Eastern Migratory Population of Whooping Cranes (Grus americana)

Publications

Servanty, S., S. J. Converse, and L. L. Bailey. 2014. Demography of a reintroduced population: moving toward management models for an endangered species, the whooping crane. Ecological Applications Online Early January 2 Abstract

Converse, S. J., C. T. Moore, and D. P. Armstrong. 2013. Demographics of reintroduced populations: Estimation, modeling, and decision analysis. Journal of Wildlife Management 77(6):1081-1093. Abstract

Converse, S. J., C. T. Moore, M. J. Folk, and M. C. Runge. 2013. A matter of tradeoffs: Reintroduction as a multiple objective decision. Journal of Wildlife Management 77(6):1145–1156. Abstract

Converse, S. J., J. A. Royle, P. H. Adler, R. P. Urbanek, and J. A. Barzen. 2013. A hierarchical nest survival model integrating incomplete temporally varying covariates. Ecology and Evolution 3 (13):4439-4447. Abstract

Mueller, T., R. B. O'Hara, S. J. Converse, R. P. Urbanek, and W. F. Fagan. 2013. Social learning of migratory performance. Science 341(6149):999-1002. Abstract

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Evan Grant

Email: ehgrant@usgs.gov

Website: http://www.pwrc.usgs.gov/nearmi/

Areas of Study

Managing the Extinction risk of the Shenandoah Salamander under predicted climate change

Publications

Grant, E. H. C. 2011. Structural complexity, movement bias, and metapopulation extinction risk in dendritic ecological networks. Journal of the North American Benthological Society 30(1):252-258. Abstract

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Jeff Hatfield

Email: jhatfield@usgs.gov

Areas of Study

Range-wide Metapopulation Viability Analysis for the Golden-cheeked Warbler

Survival and Reintroduction of the Laysan Teal

Publications

Reynolds, M. H., E. Weiser, I. Jamieson, and J. S. Hatfield. 2013. Demographic variation, reintroduction, and persistence of an island duck (Anas laysanensis). Journal of Wildlife Management 77(6):1094-1103. Abstract

Hatfield, J. S., F. W. Weckerly, and A. Duarte. 2012. Shifting foundations and metrics for golden-cheeked warbler recovery. Wildlife Society Bulletin 36(3):415-422. Abstract

Reynolds, M. H., J. S. Hatfield, L. P. Laniawe, M. S. Vekasy, J. L. Klavitter, P. Berkowitz, L. H. Crampton, and J. R. Walters. 2012. Influence of space use on fitness and the reintroduction success of the Laysan teal. Animal Conservation 15(3):305-317. Abstract

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Paula Henry

Email: phenry@usgs.gov

Areas of Study

Biology and Monitoring of Diamondback Terrapins in the Chesapeake Bay

Publications

Haramis, G. M., P. F. P. Henry, and D. D. Day. 2011. Using scrape fishing to document terrapins in hibernacula in Chesapeake Bay. Herpetological Review 42(2):170-177.

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Jim Nichols

Email: jnichols@usgs.gov

Areas of Study

Inferences about Bat Populations: Mitigation Monitoring

Development of Patch Occupancy Models for Assessing the Spatial Distribution of Organisms

Estimation of Wind Farm Mortality for Golden Eagles

Publications

Fernandez-Chacón, A., C. Stefanescu, M. Genovart, J. D. Nichols, J. E. Hines, F. Paramo, M. Turco, and D. Oro. 2014. Determinants of extinction-colonization dynamics in Mediterranean butterflies: the role of landscape, climate and local habitat features. Journal of Animal Ecology 83(1):276-285. Abstract

Miller, D. A. W., C. S. Brehme, J. E. Hines, J. D. Nichols, and R. N. Fisher. 2012. Joint estimation of habitat dynamics and species interactions: Disturbance reduces co-occurrence of non-native predators with an endangered toad. Journal of Animal Ecology 81(6):1288-1297. Abstract

Eaton, M. J., P. T. Hughes, J. D. Nichols, A. Morkill, and C. Anderson. 2011. Spatial patch occupancy patterns of the Lower Keys marsh rabbit. Journal of Wildlife Management 75(5):1186-1193. Abstract

Johnson, F. A., D. R. Breininger, B. W. Duncan, J. D. Nichols, M. C. Runge, and B. K. Williams. 2011. A Markov decision process for managing habitat for Florida scrub-jays. Journal of Fish and Wildlife Management 2(2):234-246. Abstract , PDF

Martin, J., P. L. Fackler, J. D. Nichols, B. C. Lubow, M. J. Eaton, M. C. Runge, B. M. Stith, and C. A. Langtimm. 2011. Structured decision making as a proactive approach to dealing with sea level rise in Florida. Climatic Change 107(1-2):185-202. Abstract

O'Connell, A. F., J. D. Nichols, and K. U. Karanth, editors. 2011. Camera traps in animal ecology: methods and analyses. . Springer, Tokyo. xiv, 271 pp. Abstract

Blakesley, J. A., M. E. Seamans, M. M. Conner, A. B. Franklin, G. C. White, R. J. Gutierrez, J. E. Hines, J. D. Nichols, T. E. Munton, D. W. H. Shaw, J. J. Keane, G. N. Steger, and T. L. McDonald. 2010. Population dynamics of spotted owls in the Sierra Nevada, California. Wildlife Monographs No. 174:1-36. Abstract

Karanth, K. K., J. D. Nichols, K. U. Karanth, J. E. Hines, and N. L. Christensen. 2010. The shrinking ark: patterns of large mammal extinctions in India. Proceedings of the Royal Society B: Biological Sciences 277(1690):1971-1979. Abstract

Nichols, J. D. and M. D. Koneff. 2010. Wise decision making for climate change adaptation. Transactions of the North American Wildlife and Natural Resources Conference 75:169-170 (abstract).

Bailey, L. L., J. A. Reid, E. D. Forsman, and J. D. Nichols. 2009. Modeling co-occurrence of northern spotted and barred owls: Accounting for detection probability differences. Biological Conservation 142(12):2983-2989. Abstract

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Allan O’Connell

Email: aoconnell@usgs.gov

Areas of Study

Ecology of Raccoons within Cape Lookout National Seashore, North Carolina, and the Efficacy of Raccoon Removal as a Management Tool for Protecting Rare, Threatened, and Endangered Species

Estimation of Population Densities for the Florida Panther

Publications

Parsons, A. W., T. R. Simons, A. F. O'Connell, Jr., and M. K. Stoskopf. 2013. Demographics, diet, movements, and survival of an isolated, unmanaged raccoon Procyon lotor (Procyonidae, Carnivora) population on the Outer Banks of North Carolina. Mammalia 77(1):21-30. Abstract

Sollmann, R., B. Gardner, R. B. Chandler, D. B. Shindle, D. P. Onorato, J. A. Royle, and A. F. O'Connell. 2013. Using multiple data sources provides density estimates for endangered Florida panther. Journal of Applied Ecology. 50(4):961-968. Abstract

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Glenn Olsen

Email: golsen@usgs.gov

Areas of Study

The Release of Parent-Reared Whooping Crane Colts into the Eastern Migratory Population

A Vaccination Program to Protect Endangered Whooping Cranes from Encephalitis Virus

Publications

Olsen, G. H. 2012. Following migrating introduced whooping cranes with satellite telemetry. Pages 23 (abstract) in . 2012 Avian & Marine Tracking Conference March 27-30 : Taking Biotelemetry to New Horizons. Microwave Telemetry, Inc., Columbia, Maryland. 54 pp. PDF

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J. Andy Royle

Email: aroyle@usgs.gov

Areas of Study

Estimation of Population Densities for the Florida Panther

Spatial Capture-Recapture Models to Estimate Abundance and Density of Animal Populations

Publications

Royle, J. A., R. B. Chandler, R. Sollmann, and B. Gardner. 2014. Spatial Capture-Recapture. . Academic Press, Waltham, MA. xxix, 577 pp. Abstract

Sollmann, R., B. Gardner, R. B. Chandler, D. B. Shindle, D. P. Onorato, J. A. Royle, and A. F. O'Connell. 2013. Using multiple data sources provides density estimates for endangered Florida panther. Journal of Applied Ecology. 50(4):961-968. Abstract

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Michael Runge

Email: mrunge@usgs.gov

Areas of Study

Adaptive Management for Threatened and Endangered Species

Modeling, Estimation, and Adaptive Management of Florida Manatees

Modeling, Estimation, and Adaptive Management of Golden and Bald Eagle Fatalities on Wind Facilities

Publications

Regan, T. J., B. L. Taylor, G. G. Thompson, J. F. Cochran, K. Ralls, M. C. Runge, and R. Merrick. 2013. Testing decision rules for categorizing species' extinction risk to help develop quantitative listing criteria for the U.S. Endangered Species Act. Conservation Biology 27(4):821–831. Abstract

Thogmartin, W. E., C. A. Sanders-Reed, J. A. Szymanski, P. C. McKann, L. Pruitt, R. A. King, M. C. Runge, and R. E. Russell. 2013. White-nose syndrome is likely to extirpate the endangered Indiana bat over large parts of its range. Biological Conservation 160:162-172. Abstract

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Last Updated: January 2014

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