Nutritional and physiological ecology of large mammals, with a focus on extrinsic and intrinsic factors affecting population performance.
My research has concentrated on examining nutrition as a mechanistic thread between environmental variation (e.g., winter severity, habitat composition) and population variation of large ungulates, as well as of wolves. In an effort to expand the biologist's and manager's understanding of habitat requirements and enhance conservation efforts, I have employed experimental and natural comparison designs, often in long-term studies, to examine the effects of seasonal weather conditions, habitat alteration, nutritional restriction and recovery on physiological indices, body condition, food habits, movements, habitat use, age-specific survival and reproduction. Specifically, my collaborative research has involved white-tailed deer and wolves in northern Minnesota; elk and bison in Yellowstone National Park, before and after the historic fires of 1988; moose on Isle Royale and in northern Minnesota; and elk and mule deer in Arizona.
DelGiudice, G. D., J. R. Fieberg, and B. A. Sampson. 2013. A long-term assessment of the variability in winter use of dense conifer cover by female white-tailed deer. PLoS ONE 8(6): e65368. Doi: 10.1371/journal.pone.0065368
DelGiudice, G. D., B. A. Sampson, and J. H. Giudice. 2013. A long-term assessment of the effect of winter severity on the food habits of white-tailed deer. Journal of Wildlife Management. 77:1664-1675.
DelGiudice, G. D., B. A. Sampson, M. S. Lenarz, M. W. Schrage, and A. J. Edwards. 2011. Winter body condition of moose (Alces alces) in a declining population in northeastern Minnesota. Journal of Wildlife Diseases 47: 30-40.
DelGiudice, G. D., K. R. McCaffery, D. E. Beyer, Jr., and M. E. Nelson. 2009. Prey of wolves in the Great Lakes region. Pages 155-173 in A. P. Wydeven,T. R. Van Deelen, and E. J. Heske, editors. Recovery of gray wolves in the Great Lakes Region of the United States: an endangered species success story. Springer. New York, New York.
Fieberg, J., and G. D. DelGiudice. 2009. What time is it? Importance of time origin and scale in of extended proportional hazards models. Ecology 90:1687-1697.
Carstensen, M., G. D. DelGiudice, B. A. Sampson, and D. W. Kuehn. 2009. Survival, birth characteristics, and cause-specific mortality of white-tailed deer neonates. Journal of Wildlife Management 73:175-183.
DelGiudice, G. D., M. S. Lenarz, and M. Carstensen Powell. 2007. Age-specific fertility and fecundity in northern free-ranging white-tailed deer: evidence for reproductive senescence? Journal of Mammalogy 88:427-435.
DelGiuduce, G. D., J. Fieberg, M. R. Riggs, M. Carstensen Powell, and W. Pan. 2006. A long-term age-specific survival analysis of female white-tailed deer. Journal of Wildlife Management 70:1556-1568.
FWCB | 135 Skok Hall | 2003 Upper Buford Circle | St. Paul, MN 55108 (612) 624-3600 | Fax: (612) 301-1852 | Email: email@example.com