Donald Hagan

Associate Professor of Forest Ecology
Forestry and Environmental Conservation Department

Office: 202 Lehotsky Hall
Phone: 864-656-7333


 Educational Background

Ph.D. Forest Ecology
University of Florida 2012

M.S. Forest Ecology
University of Florida 2008

B.S. Environmental Studies/Policy
University of West Florida 2002

 Courses Taught

FOR2050/2051 Dendrology
FOR2060/2061 Forest Ecology
FOR2210 Forest Biology
FOR2510 Forest Communities
FNR4700 Vegetative Succession in Restored Wetland and Stream Ecosystems (Creative Inquiry)
FNR4700 Japanese Stiltgrass Invasion in a Multi-Use Forest: Patterns, Mechanisms and Perceptions (Creative Inquiry)
FNR4700 Appalachian Fire Ecology (Creative Inquiry)
FOR4930 Wildland and Prescribed Fire Training
FOR4930 Winter Tree ID
FOR7070 Trees of the Southeastern US
FOR8050 Forest Landscape Ecosystems


Dr. Hagan is an ecologist who studies the effects of fire and plant invasions on population, community and ecosystem-level processes in forest ecosystems. He conducts most of his research in the southern Appalachian and Piedmont regions, but he has also worked extensively in the SE Coastal Plain, Florida, and in the tropical dry forests of coastal Ecuador. Current research projects are supported by the Joint Fire Science Program, the US Forest Service, the National Park Service, and the USDA Conservation Innovation Grant program. Hagan is passionate about teaching and mentoring and is heavily involved with Clemson's Creative Inquiry undergraduate research program. He serves as faculty advisor for the Student Association for Fire Ecology, and works closely with the "Fire Tigers" -- Clemson's wildland and prescribed fire crew. Since 2015 he has served on the board of the Consortium of Appalachian Fire Managers and Scientists.

Dr. Hagan was the recipient of the Delta Alpha Phi Extraordinary Educator Award (2018), the Society of American Foresters Young Forester Leadership Award (2017), the Ansel E. Miller Faculty Teaching Award (2022, 2017 and 2015) and the CAFLS Teaching Award of Excellence (2014).

 Research Interests

Forest ecology, invasion ecology, fire ecology, forest soils



Hagan D.L., Malone R.H., and Strickland C.R. (2019). Winter Tree ID for the Southern Appalachians and Piedmont: A Photographic Guide. Clemson University Press.


For a full list of publications please see my Google Scholar or ResearchGate pages (links below).


Google Scholar
Forest Ecology and Fire Science Lab on Instagram
Clemson Newsroom
The Fire Tigers