Alan Johnson

Associate Professor
Forestry and Environmental Conservation Department

Office: G-08C Lehotsky
Phone: 864-656-4390


 Educational Background

Ph.D. Environmental Toxicology
The University of Tennessee, Knoxville 1988

B.S. Chemistry
Colorado State University 1980

 Courses Taught

ENR 1020 - Introduction to Environmental and Natural Resources II
ENR 3120 - Environmental Risks and Society
ENR 4290/6290 - Environmental Law and Policy
ENR 4500/6500 - Conservation Issues
FNR 4990 - Senior Seminar
ETOX 8410 - Ecological Risk Assessment


Dr. Johnson's research interests include ecological modeling, risk assessment, and science-based environmental policy and decision-making. His teaching focuses on introductory and policy-related courses for undergraduates, and a graduate-level course on ecological risk assessment.

Currently, Dr. Johnson serves on the Departmental Assessment Committee, the College Committee on Teaching and Learning, the Clemson University Sustainability Commission, and committees overseeing the Sustainability and the Astrobiology minors. He is also Chair of an ad hoc committee to re-write the College bylaws.

 Research Interests

Ecological modeling, environmental toxicology, and ecological risk assessment, with particular focus on:
* risk assessment and management decisions under uncertainty
* the water-energy nexus
* conceptual issues in astrobiology, including space colonization, terraforming, wilderness and conservation planning beyond planet Earth


Johnson, A.R. 2020. Extending the concept of wilderness beyond planet Earth. Ethics & the Environment 25(1): 69-83.
Johnson, A.R. 2019. Biodiversity requirements for self-sustaining space colonies. Futures 110: 24-27,
Mhatre, S.S., A. Johnson and M. Wolf. 2015. Presence of Alasmidonta varicosa (Brook Floater) nursery in Turkey Creek, Savannah River basin: New information on brook floater in the Slate belt region of South Carolina, USA. Ellipsaria (newsletter of the Freshwater Mollusk Conservation Society), Dec 2015, pp. 17-18.
Allen, C.R., D.R. Uden, A.R. Johnson and D. Angeler. 2015. Spatial modeling approaches for understanding and predicting the impacts of invasive alien species on native species and ecosystems. Pages 162-170 in Venette, R.C. (ed.), Pest Risk Modelling and Mapping for Invasive Alien Species. CABI, Oxfordshire, UK.
Johnson, A.R. 2012. Avoiding environmental catastrophes: varieties of principled precaution. Ecology and Society 17(3): 9.
Johnson, A.R. and S.J. Turner. 2010. Relevance of spatial and temporal scales to ecological risk assessment. In: L.A. Kapustka and W.G. Landis (eds.), Environmental Risk Assessment and Management from a Landscape Perspective. Wiley, Hoboken, NJ, USA. pp.55-74.