About Tom

Tom Stohlgren, Ph.D., is a Senior Research Scientist at the Natural Resource Ecology Laboratory, where he has held an Affiliate Faculty position since 1991. Tom is recognized as one of the top ten most productive scientists in the world in the field of biological invasions. He has published over 200 scientific papers and a textbook on methods of assessing plant diversity. He received a Bachelor's degree in Forestry from the University of California, Berkeley; Master's degree in Biology from California State University, Fresno; and, Ph.D. in Ecology from the University of California, Davis. Tom enjoyed working for the U.S. Geological Survey, Fort Collins Science Center, and the Department of the Interior for 35 years. Stohlgren has won several national awards including two Partners in Conservation Awards, and the Meritorious Service Award. He teaches graduate classes on philosophy of science, invasion ecology, and technical writing. Because of his expertise on biological invasions, he is invited around the globe to lecture on harmful invasive plants, animals, and diseases. Stohlgren works with the National Ecological Observatory Network and helps on issues related to biological sampling and scaling. He also directs the National Institute of Invasive Species Science and dreams of developing a new center for Modeling Species Distributions and Ecological Forecasting.

Website CV


  • Plant ecology, patterns of plant diversity, sampling design & inventory techniques, forest ecotones, long-term monitering, landscape ecology, global change.


Ph.D., Ecology - University of California
Davis, CA, 1990

M.A., Biology - California State University
Fresno, CA, 1982

B.S., Forestry - University of California
Berkeley, CA, 1978

Awards, Honors, Grants

  • Distinguished Resident Ecologist, Graduate Degree Program in Ecology, CSU, 2012
  • US Geological Survey Special Achievement Award , 2010
  • Department of Interior Partners in Conservation Award for "Partnerships for Advanced Species Modeling," to Stohlgren and USGS and CSU colleagues, 2009
  • Stohlgren recognized as one of the top ten most productive scientists in the world in the field of biological invasions (Qui and Chen 2009; Scientometrics 81(3):601-610)., 2009
  • US Geological Survey Special Achievement Award , 2009
  • US Geological Survey Special Achievement Award , 2008

Selected Publications

Field validation of an invasive species Maxent model

  • West, A., Kumar, S., Brown, C.Stohlgren, T., & Bromberg, J.,

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling (SAHM).

  • West, A., Evangelista, P., Jarnevich, C., Young, N., Stohlgren, T., Talbert, C.,... Anderson, R.,

Severity of a mountain pine beetle outbreak across a range of stand conditions in Fraser Experimental Forest, Colorado, United States

  • Vorster, A., Evangelista, P., Stohlgren, T., Kumar, S., Rhoades, C., Hubbard, R.,... Elder, K.,