Patuxent Wildlife Research Center

whiteshadow
Patuxent Intranet | Patuxent Home | Staff | Contact Us  

Endangered Species - current studies

Sarah Converse

Email: sconverse@usgs.gov

USGS Professional Page: https://profile.usgs.gov/sconverse

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

Brown, M., S. Converse, J. Chandler, A. Crosier, W. Lynch, D. Wildt, C. Keefer, and N. Songsasen. 2015. Time within reproductive season, but not age or inbreeding coefficient, influences seminal and sperm quality in the whooping crane (Grus americana). Reproduction, Fertility and Development Online Early January 19 Abstract

Lunn, N. J., S. Servanty, E. V. Regehr, S. J. Converse, E. Richardson, and I. Stirling. 2014. Demography and population status of polar bears in western Hudson Bay. Research Report . Environment Canada. 55 pp. Abstract

See more | back to top

Evan Grant

Email: ehgrant@usgs.gov

USGS Professional Page: https://profile.usgs.gov/ehgrant

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

Areas of Study

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

Publications

Brand, A. B., A. N. M. Wiewel, and E. H. C. Grant. 2014. Potential reduction in terrestrial salamander ranges associated with Marcellus shale development. Biodiversity and Conservation 180:233-240. Abstract

See more | back to top

Jeff Hatfield

Email: jhatfield@usgs.gov

USGS Professional Page: http://www.pwrc.usgs.gov/staff/profiles/documents/hatfield.htm

Areas of Study

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

Survival and Reintroduction of the Laysan Teal

Publications

Duarte, A., J. E. Hines, J. D. Nichols, J. S. Hatfield, and F. W. Weckerly. 2014. Age-specific survival of male golden-cheeked warblers on the Fort Hood Military Reservation, Texas. Avian Conservation and Ecology 9(2):Article 4. Abstract ; PDF

Reynolds, M. H., K. N. Courtot, K. W. Brinck, C. L. Rehkemper, and J. Hatfield. 2014. Long-term monitoring of endangered Laysan Ducks: Index validation and population estimates 1998-2012. Journal of Fish and Wildlife Management Online Early December 3 Abstract

See more | back to top

Jim Nichols

Email: jnichols@usgs.gov

USGS Professional Page: https://profile.usgs.gov/jnichols

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

Eaton, M. J., P. T. Hughes, J. E. Hines, and J. D. Nichols. 2014. Testing metapopulation concepts: Effects of patch characteristics and neighborhood occupancy on the dynamics of an endangered lagomorph. Oikos 123(6):662-676. Abstract

See more | back to top

Allan O’Connell

Email: aoconnell@usgs.gov

USGS Professional Page: https://profile.usgs.gov/aoconnell

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

See more | back to top

Glenn Olsen

Email: golsen@usgs.gov

USGS Professional Page: http://www.pwrc.usgs.gov/staff/profiles/documents/olsen.htm

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

Porter, M. L., A. C. N. Kingston, R. McCready, E. G. Cameron, C. M. Hofmann, L. Suarez, G. H. Olsen, T. W. Cronin, and P. R. Robinson. 2014. Visual pigments, oil droplets, lens, and cornea characterization in the whooping crane (Grus americana) . Journal of Experimental Biology 217:3883-3890. Abstract

See more | back to top

J. Andy Royle

Email: aroyle@usgs.gov

USGS Professional Page: https://profile.usgs.gov/aroyle

Areas of Study

Estimation of Population Densities for the Florida Panther

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

Publications

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

See more | back to top

Michael Runge

Email: mrunge@usgs.gov

USGS Professional Page: https://profile.usgs.gov/mrunge

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

Runge, M. C., C. A. Langtimm, J. Martin, and C. J. Fonnesbeck. 2015. Status and threats analysis for the Florida manatee (Trichechus manatus latirostris), 2012. Open-File Report 201-1083. U.S. Geological Survey. 33 pp. Abstract

See more | back to top

Last Updated: June 2015

Programs

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.pwrc.usgs.gov
Page Contact Information: Webmaster