Category	Citation
Publication	Riggs, R. A., J. G. Cook, L. L. Irwin, and J. L. Spicer. 1993. Relating timber management to cover for big game on interior northwest winter range: some thoughts on reducing conflict. Pages 18-36 in R. L. Callas, E. B. Koch, and E. R. Loft, editors. Proceedings of the Western States and Provinces Elk Workshop. Cali
Publication	Irwin, L. L., J. G. Cook, R. A. Riggs, and J. M. Skovlin. 1994. Effects of long-term grazing by big game and livestock in the Blue Mountains forest ecosystems. U.S. Forest Service General Technical Report PNW-GTR-325.
Publication	Cook, J. G., R. A. Riggs, A. R. Tiedemann, L. L. Irwin, and L. D. Bryant. 1994. Large herbivore-vegetative feedback relations in the Blue Mountains ecoregion. Pages 155-159 in W. D. Edge and S. L. Olson-Edge, editors. Proceedings of a symposium on sustaining rangeland ecosystems. Oregon State University Extension Service Special Re
Publication	Riggs, R. A., J. G. Cook, A. Tiedemann, and L. Bryant. 1995. Twenty-seven years of succession in grand fir forests of the Blue Mountains: influences of wild herbivores. Proceedings of the Western States and Provinces 1995 Joint Deer and Elk Workshop, Sun Valley, Idaho. Idaho Department of Fish and Game.
Publication	Vales, D. J., R. A. Riggs, and L. Bryant. 1995. A model to estimate elk vulnerability as influenced by hunter density, roads, cover, and topography. Proceedings of the Western States and Provinces 1995 Joint Deer and Elk Workshop, Sun Valley, Idaho.
Publication	Cook, J. G., L. J. Quinlan-Murphy, L. L. Irwin, L. D. Bryant, R. A. Riggs, and J. W. Thomas. 1996. Nutrition-growth relations of elk calves during late summer and fall. Journal of Wildlife Management 60:528-541.
Publication	Cook, J. G.; Irwin, L. L.; Bryant, L. D.; Riggs, R. A.; Thomas, J. W. 1998. Relations of forest cover and condition of elk: a test of the thermal cover hypothesis in summer and winter. Wildlife Monographs No. 141:1- 61p.
Publication	Riggs, R. A.; Tiedemann, A. R.; Cook, J. G.; Ballard, T. M.; Edgeton, P. J.; Vavra, M.; Krueger, W. C.; Hall, F. C.; Bryant, L. D.; Irwin, L. L.; DelCurto, T. 2000. Modification of mixed-conifer forests by ruminant herbivores in the Blue Mountains Ecological Province. USDA Forest Service, Pacific Northwest Research Station Research Paper PNW-RP-527.
Publication	Noyes, J. H., B. K. Johnson, R. A. Riggs, M. W. Schlegel, and V. L. Coggins. 2000. Assessing aerial survey methods to estimate elk populations: a case study. Wildlife Society Bulletin 28:636-642.
Publication	Vavra, M., A. Ager, B. Johnson, M. Wisdom, M. Hemstrom, and R. Riggs. 2004. Modeling the effects of large herbivores. In Hayes, J., A. Ager, & B. James, Ed. Methods for integrated modeling of landscape change: Interior NW Landscape Analysis Sys. Gen. Tech. Rep. PNW-GTR-610. USDA FS, PNW, Portland, OR. Pg 82-103.
Publication	Cook, J. G., B. K. Johnson, R. C. Cook, R. A. Riggs, T. DelCurto, L. D. Bryant, L. L. Irwin 2004. Effects of summer-autumn nutrition and parturition date on reproduction and survival of elk. Wildlife Monographs 155:1-61
Publication	Cook, J. G., B. K. Johnson, R. C. Cook, R. A. Riggs, T. DelCurto, L. D. Bryant, and L. L. Irwin 2005. Nutrition and parturition date effects elk: Potential implications for research and management. March 20, 2004. Transactions of the North American Wildlife and Natural Resources Conference 69.
Publication	Cook, J. G., L. L. Irwin, L. D. Bryant, R. A. Riggs, and J. W. Thomas 2005. Thermal cover needs of large ungulates: A review of hypothesis tests. March 20, 2004. Transactions of the North American Wildlife and Natural Resources Conference 69.
Publication	Riggs, R. A., J. G. Cook, and L. L. Irwin 2005. Management implications of ungulate herbivory in Northwest forest ecosystems. March 20, 2004. Transactions of the North American Wildlife and Natural Resources Conference 69.
Publication	Vavra, M., M. J. Wisdom, J. G. Kie, J. G. Cook, and R. A. Riggs 2005. The role of ungulate herbivory and management on ecosystem patterns and processes: future direction for the Starkey Project. March 20, 2004. Transactions of the North American Wildlife and Natural Resources Conference 69.
Published Abstract	Cook, John G.; Riggs, Robert A.; Kie, John G. 1998. Role of large herbivores in management in restoration of disturbance-adapted forest ecosystems. In: Reig, Santiago, ed. Abstracts: Euro-American mammal congress; 1998 July 19-24; Santiago de Compostela, Spain. Santiago de Compostela, Spain: Universid
Published Abstract	Riggs, Robert A., John G. Cook, and John G. Kie. 1998. The role of large ruminant herbivores in management and restoration of disturbance-adapted forest ecosystems. Euro-American Mammal Congress, Santiago de Compostela, Spain, 19-24 July 1998.