Dr. Doug Tolleson



Associate Professor & Rangeland Scientist


Rangeland vegetation monitoring, grazing and fire management


Ph.D. Rangeland Ecology and Management, Texas A&M University
M.S. Physiology of Reproduction, Texas A&M University
B.S. Animal Science, Texas A&M University


(325) 387 3168




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Texas A&M AgriLife Research – Sonora
P.O. Box 918
Sonora, TX 76950-0918

Doug Tolleson is associate professor and rangeland scientist at the Texas A&M Agrilife Research Sonora Research Station. Dr Tolleson was an extension specialist and research scientist at the University of Arizona V Bar V Ranch Experiment Station near Camp Verde Arizona from 2008 to 2016. Prior to obtaining his Ph.D. in Rangeland Ecology and Management at Texas A&M University in 2007, he was Director of the Grazingland Animal Nutrition Laboratory here in the Department of Ecosystem Science and Management. Dr Tolleson conducts research on rangeland vegetation monitoring with which to inform grazing and fire management efforts and employs near infrared reflectance spectroscopy to study grazing animal nutrition and physiology.

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