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Faculty and Staff

Wildlife, Sustainability, and Ecosystem Sciences
Dr. T. Wayne SchwertnerDr. T. Wayne Schwertner
Assistant Professor, Department Head
Email: schwertner@tarleton.edu
Office: Autry, 201
Phone: (254) 968-9219
Kay McAfeeKay McAfee
Administrative Associate
Email: kmcafee@tarleton.edu
Office: Autry, 201
Phone: (254) 968-9221
Dr. Barbara BellowsDr. Barbara Bellows
Assistant Professor, Coordinator for The Center of Environmental Studies
Email: bellows@tarleton.edu
Office: Autry, 201B
Phone: (254) 968-1742
Dr. Jeff BradyDr. Jeff Brady
Assistant Professor
Email: j-brady@tamu.edu
Office: Autry, 201
Phone: (254) 968-4144
Dr. Jeff BreedenDr. Jeff Breeden
Associate Professor, Graduate Program Coordinator
Email: breeden@tarleton.edu
Office: Autry, 204D
Phone: (254) 968-1950
Dr. Don CawthonDr. Don Cawthon
Professor
Email: cawthon@tarleton.edu
Office: Autry, 201
Phone: (254) 968-9221

Dr. Cawthon has a BS ('73), MS ('77) and Ph.D. ('82) in Horticulture, Horticultural Food Science and Food Science respectively from the University of Arkansas. He has held various horticultural teaching, research, industry and administrative positions and currently serves as a faculty member in the Department of Wildlife, Sustainability and Ecosystem Sciences at Tarleton State University and as Director of the Texas A&M AgriLife Research and Extension Center in Stephenville.

Teaching interests are in the areas of horticulture, food science and sustainable agriculture. Research interests include effects of pre- and post-harvest variables on production and quality of horticultural food crops; composting, stabilization and utilization of agricultural and food wastes; and issues pertaining to agricultural sustainability and conservation of our natural resources. Ongoing activities include a USDA-funded project entitled “Green Thumbs, Green Plates and Green Attitudes for a Well Fed Future” that will increase campus and regional awareness of the health benefits associated with the use of fresh food; call attention to the importance of reducing food waste; introduce students and local communities to the benefits of life-long gardening through on-campus and community vegetable and fruit plots; and recruit undergraduate and graduate students into food-related careers. He has authored or co-authored 150 refereed and non-refereed research publications.

Dr. Hennen CummingsDr. Hennen Cummings
Associate Professor, Internship Coordinator
Email: hcummings@tarleton.edu
Office: Autry, 203C
Phone: (254) 968-9223

Dr. Hennen Cummings is a Professor of Aquaponics and Turfgrass Management and Director of the Hydrotron and Turfgrass Field Laboratory at Tarleton. The Hydrotron is a greenhouse that has an aquaponics system and several hydroponics systems. The aquaponics system has a 1750 gallon tank with Mozambique tilapia, a 350 gallon tank with Channel catfish, and a 50 gallon tank with tilapia brood and fingerings. The fish water is recirculated under three 4 ft x 8 ft rafts and several towers where leafy plants use the nutrients in the fish water before the water is returned to the fish tanks. Solid waste filtered from the fish tanks is used to nourish freshwater Tiger prawns in a 950 gallon tank. Tomatoes, peppers, cucumbers, and strawberries are grown in coco fiber (without soil) in hydroponics systems. Strawberries are grown in vertical towers. Herbs in hanging baskets are fertilized with fish water. Outside the Hydrotron are several composters and media-based aquaponics systems built by students using IBC totes. The Turfgrass Field Laboratory has 12 species of irrigated cool and warm-season turfgrasses maintained at various mowing heights and levels of intensity. His doctoral work examined pesticide movement in row crop and turfgrass systems.

Website: Dr. Hennen Cummings

Jim EidsonJim Eidson
Adjunct
Email: arthureidson.55@gmail.com
Office: 203B Autry
Phone: 254-968-1740
Dr. Hemanta KafleyDr. Hemanta Kafley
Visiting Assistant Professor
Email: kafley@tarleton.edu
Office: Autry, 203B
Phone: 254-968-1740
Dr. Eunsung KanDr. Eunsung Kan
Associate Research Professor
Email: KAN@tarleton.edu
Office: Autry 201
Phone: (254) 968-4144

AgriLife Website: Dr. Eunsung Kan

Tarleton Website: Dr. Eunsung Kan

Dr. David KattesDr. David Kattes
Professor
Email: kattes@tarleton.edu
Office: Autry, 210
Phone: (254) 968-9214

David Kattes is a Professor in WSES at Tarleton and is engaged in both agronomy and entomology. His research interests include arthropods of veterinary and wildlife importance and is currently studying the biology and ecology of the spinose ear tick at the Fossil Rim Wildlife Center in Glenrose, Texas. Dr. Kattes is also interested in native pollinator diversity and conservation in the Cross Timbers region of Texas.

Website: Dr. David Kattes

Dr. Heather MathewsonDr. Heather Mathewson
Assistant Professor, Undergraduate Advising Coordinator
Email: mathewson@tarleton.edu
Office: Autry, 203 A
Phone: (254) 968-1892
Website: Dr. Heather Mathewson
Dr. Donald McGahanDr. Donald McGahan
Associate Professor
Email: mcgahan@tarleton.edu
Office: Autry, 204C
Phone: (254) 968-9701

Dr. McGahan is interested in identifying systematic variation in soil morphology and soil genesis using relationships with climate, vegetation and biological organisms, geomorphology, and geology. As a soil morphologist Dr. McGahan utilized multiple low and high technology tools to investigate soil and soil mineralogical alterations brought about by the soil forming factors. Mineralogical alterations are the primary cause of many important values we measure in soils. By studying the alteration of minerals and considering the evolution of soils (a very slowly renewable resource), relationships vital to addressing landscape scale issues are better understood. This knowledge of soil “in the environment” and “of the environment” is applicable to site-specific soil management(s) including both land use for agricultural, and land use for non-agricultural soils and soil uses. Furthermore, Dr. McGahan operates under the premise that understanding soil is also vital to conservation of many other natural resources.

Website: Dr. Donald McGahan

Paula McKeehanPaula McKeehan
Assistant Professor
Email: pmckeehan@tarleton.edu
Office: Autry, 204A
Phone: (254) 968-9195
Website: Ms. Paula McKeehan
Dr. Jim MuirDr. Jim Muir
Professor
Email: j-muir@tamu.edu
Office: Autry, 201
Phone: (254) 968-4144

James P. Muir, a Fellow of the American Society of Agronomy, is Regent’s Professor and Research Scientist with Tarleton and Texas A&M AgriLife Research. He is a grassland ecologist focusing on the plant/animal interface. He has research currently on-going in Brazil, Argentina and throughout Texas. His students have undertaken research or presented their data in many countries, including Argentina, South Africa and Malaysia. His long-term focus has been legumes, both cultivated and natural, and their myriad roles in pastures, rangeland, prairies and savannahs. Currently his multi-national team is looking at the many facets of legume condensed tannins as they affect plant survival, herbivory, carbon sequestration as well as animal and environment health. He is also interested in domesticating native Texas legume ecotypes for many uses, including prairie restoration and roadside revegetation.​

Website: Dr. Jim Muir

Dr. Darrel MurrayDr. Darrel Murray
Adjunct
Email: dmurray@tarleton.edu
Office: 203B Autry
Phone: 254-968-1740

My research & teaching interests include the application of ecological science toward real-world problems involving conservation of species, sustainable use of resources, land degradation, climate change, and ecosystem management. I am advisor to the plant ID team and Prescribed Burn Society at Tarleton. I welcome undergraduate & graduate research projects.

Website: Dr. Darrel Murray

Ms. Mandira SharmaMs. Mandira Sharma
Adjunct
Email: sharma@tarleton.edu
Office: 205A Autry
Phone: 254-968-1911
Dr. Justin TuggleDr. Justin Tuggle
Adjunct
Email: jtuggle@tarleton.edu
Office: 203B Autry
Phone: 254-968-1740

Dr. Justin Tuggle is a consultant of CropDocs Agricultural Consulting, LLC., an agricultural science consulting company, which focuses on farm management and planning. Methodologies for management rely on science based decision processes in the areas of soil chemistry, agronomy, plant pathology, economics, process management, and site based management in cropping systems. Clients regions serviced include Washington State, California, New Mexico, Texas, Mississippi, and Georgia, Argentina, China, Russia, and the Republic of South Africa. These clients include high value organic and conventional growers on small acreages to corporate entities. Crops include truffles and fig to vegetables, row crops, tree and bush crops, and forages for organic and conventional dairies.

Dr. Tuggle is an adjunct faculty member for Tarleton State University in the department of Wildlife, Sustainability, and Ecosystem Sciences. The focus of work is in student education including courses in Crop Production and Management, Vegetable Production, and Organic Crop Production.

Dr. Tuggle has performed the duties of staff agronomist and plant pathologist in 2006-2008 for Laboratory Management Partners, a science and technology based firm operating A&L Analytical Laboratories or currently operating as WayPoint Laboratories. Clients were serviced in Europe, Mexico, the United States, and Canada across field, vegetable, and specialty crops and environmental testing. Dr. Tuggle’s principle responsibilities included interpretation of data for clients and maintaining up to date fertility guidelines for all cropping systems available for testing.

Other past experiences include: Texas A&M University, Department of Plant Pathology and Microbiology in research and the Texas Agricultural Extension Service in field research.. Dr. Tuggle has had twenty-four years experience in breeding, pathology, consulting, and agronomics in conventional and organic agriculture. Dr. Tuggle’s education is a B.S. degree in Plant and Soil Science from Tarleton State University, M.S. in Biology from Tarleton State University, and a Ph.D. from Texas A&M University in Plant Pathology and Microbiology with an emphasis on crop breeding and statistics.

Dr. Roger WittieDr. Roger Wittie
Professor
Email: wittie@tarleton.edu
Office: Lib, 148
Phone: (254) 968-9864
Roger D. Witte, PhD
Professor - Ecology and Natural Resource Management
Retired