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Barbara A. Dowell

USGS Patuxent Wildlife Research Center
11410 American Holly Drive
Laurel, MD 20708


Telephone: 301-497-5643

Fax: 301-497-5624



Primary Responsibilities: 
Assisting senior biologists with designing and conducting research on problems relating to the population ecology and conservation of migratory birds and the endangered Delmarva fox squirrel. 

B.S., Zoology, University of Maryland, College Park, 1977.

Areas of Expertise/Interest: Neotropical migrant birds, non-native invasive plants, habitat requirements, landscape ecology
Special achievement awards for Superior Service, U. S. Fish and Wildlife Service. March 1, 1984 and October 29, 1985. 
On-the-sport award, U. S. Fish and Wildlife Service, for assisting Deputy Branch Chief in the presentation of a special international course entitled, “Monitoring Biodiversity.” August 2, 1993.

Active Projects: 

50-year changes in breeding bird populations 

Tropical forest conservation plan (Cerro San Gil Ecological Reserve, Guatemala) 

Impacts of selective tree harvesting on the Delmarva fox squirrel

Population dynamics of the Black-footed and Laysan Albatrosses


Dowell B. A., J. E. Fallon, C. S. Robbins, D. K. Dawson, and F. W. Fallon.  2000. Impacts of Cowbird parasitism on wood thrushes and other neotropical migrants in suburban Maryland forests.  Pages 244-254 in J. N. M. Smith, T. Cook, S. Rothstein, S. Robinson, and S. Sealy.  Ecology and management of cowbirds and their hosts:  studies in the conservation of North American passerine birds.  University of Texas Press, Austin, TX. ix, 388 pp. 

Robbins C. S., D. K. Dawson, and B. A. Dowell.  1995. Changing land use:  Problems  and opportunities.  Pages 1-14 in M. H. Wilson and S. A. Sader, Conservation and neotropical migratory birds in Mexico.  Misc. Pub. 727, Maine
agricultural and Forest Experiment Sation, Orono. 288 pp. 

Robbins, C. S., B. A. Dowell, and D. K. Dawson. 1994.  Habitat constraints on the distribution of passerine residents and neotropical migrants in Latin America.  EL Pitirre 7(1):  5. 

Spruce, J. P., B. A. Dowell, C. S. Robbins, and S. A. Sader.  1992.  Forest to agriculture conversion in southern Belize:  implications for migrant land birds.  Page 101 in Proceedings:  Forest Remnants in the Tropical Landscape.  The Smithsonian Migratory Bird Center, Washington, DC. 

Robbins, C. S., B. A. Dowell, D. K. Dawson, J. A. Colon, R. Estrada, A. Sutton, R. Sutton, and D. Weyer.  1992.  Comparison of neotropical migrant landbird populations wintering in tropical forest, isolated forest fragments, and agricultural habitats.  Pages 207-220 in John M. Hagan III and David W. Johnston, editors.  Ecology and Conservation of Neotropical Migrant Landbirds.  Smithsonian Institution Press, Washington, D.C. xiii, 609 pp.

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