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Great Plains Natural Science Society Officers


Dr. Chadwick P. Lehman, Past President
South Dakota Department of Game, Fish and Parks
Custer, SD

  • Dr. Lehman received a B.S. in Biological Science from the University of Minnesota-Duluth, M.S. in Wildlife Science from South Dakota State University, and a Ph.D. in Biological Science from South Dakota State University. Chad is a senior wildlife biologist for South Dakota Department of Game, Fish and Parks and directs research for the management and sound stewardship of wildlife resources in Custer State Park. His professional interests include activities that promote wildlife conservation and ecological studies that model wildlife response to forest management in western landscapes.

Dr. Teresa J. Zimmerman, President
Department of Applied Sciences
Chadron State College
Chadron, NE

  • Dr. Zimmerman received her B.S. in Natural Resources from the University of Nebraska-Lincoln, her M.S. in Wildlife Science from South Dakota State University, and her Ph.D. in Wildlife Science from South Dakota State University. She is currently an Assistant Professor in the Department of Applied Sciences at Chadron State College. Her research interests include ungulate ecology, wildlife diseases, threatened and endangered species, and human dimensions.

Dr. Jayne Jonas, President-Elect
Department of Forest and Rangeland Stewardship
Colorado State University
Fort Collins, CO

  • Dr. Jonas' professional endeavors over the past 15 years have focused on plant and insect communities in Great Plains grasslands. She has been primarily involved in research and management of tall- and mixed-grass grasslands of the northern and central Great Plains, and to a lesser extent short-grass steppe. The majority of her work has centered on understanding how fire and grazing management, as well as climate, dive plant and insect communities and the interactions between them. She received a B.S. in Life Sciences at Wayne State College, a M.S. in Entomology and a Ph.D. in Biology both from Kansas Sate University. She spent three years between her M.S. and Ph.D. programs working as a land steward and scientists for The Nature Conservancy in western Nebraska. Following completion of her doctoral program, she looked at the impacts of fire, grazing, and climate on plant species richness and diversity in Great Plains grasslands with the U.S. Geological Survey. Since that time, she has been a post-doctoral fellow in the restoration lab at Colorado State University where she is working on a variety of projects in the short-grass steppe of eastern Colorado and the sagebrush steppe of western Colorado.

Dr. Jonathan A. Jenks, Secretary-Treasurer
Department of Natural Resource Management
South Dakota State University
Brookings, SD

  • Dr. Jenks is a Distinguished Professor and Coordinator of Graduate Programs in the Department of Natural Resource Management at South Dakota State University. He obtained a B.S. degree in wildlife from Unity College in Maine, M.S. degree in wildlife management from the University of Maine, and a Ph.D. degree in wildlife and fisheries ecology from Oklahoma State University. His research interests include ungulate ecology, predator-prey relationships, population dynamics, and landscape ecology.

Dr. Keith Geluso, Board Member
Department of Biology
University of Nebraska at Kearney
Kearney, NE

  • Dr. Geluso received his B.S. in biology at the University of New Mexico in 1992, M.S. in biology at the University of Nevada in 1998, and Ph.D. in biology from the University of New Mexico in 2005. Prior to his current position, he was a wildlife biologist with the USGS in Albuquerque, New Mexico, and worked on various mammal-related projects from Montana to New Mexico. Currently, he is an Associate Professor at the University of Nebraska at Kearney (UNK), where he has been on faculty since 2006. His interests are broad and he has published mainly on mammals with an emphasis on bats and rodents, but also studies birds, reptiles, amphibians, and insects. He is a field naturalist and publishes on natural history, behavior, ecology and physiology of these organisms. Since arriving at UNK, he has published over 30 publications, many co-authored by his undergraduate students.

Dr. Rick Baydack, Board Member
University of Manitoba
Clayton H. Riddell Faculty of Environment, Earth, and Resources
Department of Environment and Geography
Winnepeg, Manitoba, Canada

  • Dr. Baydack has over 30 years of research, teaching, and consulting experience in ecosystem management, wildlife biology, resources management, and biogeography. He has been on faculty with the University of Manitoba since 1979. Dr. Baydack is currently Professor in the Department of Environment and Geography in the new Faculty of Environment, Earth and Resources, and has also served the University in the capacity of Graduate Chair, Department Head, and Associate Dean. He holds a B.S. (Honors) in Zoology and Master of Natural Resource Management degrees from the University of Manitoba, and a Ph.D. in Wildlife Biology from Colorado State University. Professionally, he is active as the first Canadian Section Representative to the Executive Council of The Wildlife Society, President of the North American Grouse Partnership, a member of the North American Grasslands Conservation Management Plan Working Group, Past-Chair of the Certification Review Board of The Wildlife Society, and a member of the Manitoba Endangered Species Advisory Committee. He has been awarded the University of Manitoba President's Outreach Award, the Hamerstrom Award from the Prairie Grouse Technical Council, and has been recognized by The Wildlife Society as a Certified Wildlife Biologist.