Environmental Sciences

Environmental Sciences Experts

Debra A Willard

Program Coordinator
USGS Climate Research & Development Program
The U.S. Geological Survey
United States Virgin Islands


I am a palynologist (pollen and spores) with expertise in paleoecology, paleoclimatology, and biostratigraphy. My biostratigraphic expertise extends from the Carboniferous to the Holocene, with an emphasis on Euramerica (Paleozoic) and the Northern Hemisphere. My paleoclimate expertise includes the late Paleozoic and the Paleogene to Holocene intervals.  Education: University of Illinois at Urbana-Champaign      Ph.D., Botany 1990 University of Illinois at Urbana-Champaign      M.S., Botany 1985 The Pennsylvania State University                  B.S., Botany 1982 Stephens College                                             A.A., Geology 1980

Research Interest

climate, environment, and land use affect critical habitats and ecosystems


  • Willard, D.A., 1989, Lycospora from Carboniferous Lepidostrobus compressions: American Journal of Botany, v. 76, p. 1429-1440.

  • Willard, D. A., 1989, Source plants for Carboniferous microspores: Lycospora from permineralized Lepidostrobus: American Journal of Botany, v. 76, p. 820-827.

  • DiMichele, W.A., Phillips, T.L., and Willard, D.A., 1986, Morphology and paleoecology of Pennsylvanian-age coal-swamp plants. in: Broadhead, T.W. (ed.), Land Plants, notes for a short course: Univ. Tenn. Studies in Geol., v. 15, p. 97-114.

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