Alan Johnson

Associate Professor
Forestry and Environmental Conservation Department

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


 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
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 Tenure, Promotion and Retention (TPR) Committee and the Assessment Committee. He is also a member of the university Sustainability Minor Oversight Committee.

 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. in press. Biodiversity requirements for self-sustaining space colonies. Futures,
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.