Paul Evangelista

Ethiopia desert plants
mountain nylalla in ethiopia
High Mountian Stream
desert cactus in bloom
High mountain homes in Ethiopia


Nicholas Young, Research Associate IV / Lab Manager

Nick’s interest and expertise are in spatial ecology with an emphasis in species distribution modeling, invasive species and mountain systems. He has worked on numerous domestic and international research projects supported by the U.S. Fish and Wildlife Service, the National Science Foundation and U.S. Geological Survey. Nick has worked in Paul’s lab since 2011 and supports the lab in various capacities including administration, data collection, analysis and publication.

Robert Sturtevant, Research Associate III /Forester

Bob is a forester with 43 years of experience in forest management and forestry extension. After retiring from the Colorado State Forest Service, he served as a conservation specialist in the Peace Corps Ethiopia 2010-2013. He continues to work in international forestry as well as private land management, forestry education and forest research through Colorado State University.

Peder Engelstad

Peder is a spatial data scientist (and amateur baker!) who contributes to a number of research projects with his expertise in statistical modeling and programming. He enjoys working closely with researchers at the USGS to harness the power of high-performance computing systems to map the distribution of invasive plant species and is dedicated to finding effective ways of communicating those data to agency scientists and land managers.

TONY VORSTER, PhD, Post-Doctoral Fellow

Tony recently completed his PhD in the Graduate Degree Program in Ecology studying landscape-scale impacts of bark beetles on forest stand structure, above-ground biomass, carbon stocks and regeneration natural resource management questions related to managing bark beetle impacts on forests and forest carbon, mapping invasive species. He utilizes GIS and remote sensing to study these issues at landscape scales and mentors the next generation of geospatial analysts as a science advisor for the NASA DEVELOP program. Tony is also an instructor and researcher in the Western Ranch Management and Ecosystem Stewardship program.

Bethlehem Astella

Bethlehem is a Ph.D. candidate in the department of Human Dimensions of Natural Resources. Her current research focuses on evaluating social equity and conservation outcomes of a community-based wildlife management program in the Bale Mountains, Ethiopia. She was formerly an instructor in Wondo Genet College of Forestry and Natural Resources where she worked on community capacity building, conflict management, monitoring and evaluation of community-based conservation initiatives in Southern Ethiopia.


Brian is a PhD candidate and NSF Graduate Research Fellow in the Graduate Degree Program in Ecology. He has worked in the Evangelista Lab since 2014 on a wide variety of topics ranging from GIS and remote sensing training to invasive species mapping. His current research interests include fire and forest ecology, natural history, and geospatial modeling, and his graduate work is focused on the ecology and distribution of coast redwood forests.


Kristen Dennis

Kristen serves as the Center Lead for the NASA DEVELOP Program at Colorado State University and supports the program’s national geoinformatics needs. Her interests and expertise lie in remote sensing, GIS, and environmental problem-solving. Kristen has a M.S. in Geological Sciences and B.S. in Mathematics and Geology.


David Keyes

David is a Restoration Ecology major with the Warner College of Natural Resources.  His interests are in low-cost restoration techniques for landowners and managers. Among these, he focuses on erosion restoration, resiliency development, and aspen regeneration. David’s professional experiences include team leadership and communication, management plan drafting, and he is currently a member of the 2020 NIFA REEU Fellowship.

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