Dr. Jack Hopkins
Jack uses a variety of sampling methods and quantitative approaches to investigate the relationship between people and wildlife. He is particularly interested in understanding the behavioral and ecological responses of carnivores to changes in their foraging opportunities, primarily due to human-induced environmental change or modifications in human-wildlife management practices. He is also active in advancing the use of stable isotope analysis in wildlife research. For example, he and Jake Ferguson have been on the forefront of advancing statistical models used to estimate the diets of animals using stable isotopes. Although he is often motivated by his basic research interests, he identifies as an applied wildlife ecologist. As such, informing wildlife conservation, management, and policy is often the main goal of his work.
Ferguson, J.M., J.B. Hopkins III, & B.H. Witteveen. 2018. Integrating population abundance and diet data to improve inferences on food web dynamics. Methods in Ecology and Evolution 9:1581–1591. PDF
Hopkins, J.B. III, J.M. Ferguson, D. Tyers, & C.M. Kurle. 2017. Selecting the best stable isotope mixing model to estimate grizzly bear diets in the Greater Yellowstone Ecosystem. PLoS ONE 12(5): e0174903.
Hopkins, J.B. III, & C.M. Kurle. 2015. Measuring the realized niches of animals using stable isotopes: from rats to bears. Methods in Ecology and Evolution 7:210–221. PDF
Hopkins, J.B. III, P.L. Koch, J.M. Ferguson, & S.T. Kalinowski. 2014. The changing anthropogenic diets of American black bears over the past century in Yosemite National Park. Frontiers in Ecology and the Environment 12:107–114. PDF (cover)
Hopkins, J.B. III, T. Clevenger, M. Sawaya, S. Nielsen, & C.C. St. Clair. 2014. Stable isotopes reveal railway-associated behaviour in a threatened carnivore. Isotopes in Environmental and Health Studies 50:322–331. (Special issue: Applications of stable isotope analysis in mammalian ecology). PDF
Hopkins, J.B. III. 2013. Use of genetics to investigate socially learned foraging behavior in free-ranging black bears. Journal of Mammalogy 94:1214–1222. PDF
Hopkins, J.B. III, & S.T. Kalinowski. 2013. The fate of transported American black bears in Yosemite National Park. Ursus 24:120–126. PDF (cover)
Hopkins, J.B. III, & J.M. Ferguson. 2012. Estimating the diets of animals using stable isotopes and a comprehensive Bayesian mixing model. PLoS ONE 7: e28478.
Hopkins, J.B. III, P.L. Koch, C.C. Schwartz, J.M. Ferguson, S.S. Greenleaf, & S.T. Kalinowski. 2012. Stable isotopes to detect food-conditioned bears and evaluate human-bear management. Journal of Wildlife Management 76:703–713. PDF
Hopkins, J.B. III, S. Herrero, R.T. Shideler, K.A. Gunther, C.C. Schwartz, & S.T. Kalinowski. 2010. A proposed lexicon of terms and concepts for human-bear management in North America. Ursus 21:154-168. PDF