Wild and Free-Roaming Horses and Burros: Current Knowledge and Recommended Research. (1980)

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230 Brookshire, F. (l974) The Burro. Norman: University of Oklahoma Press. Brown, D.G. and F.H. Cross (l969) Hematologic values of burros from birth to maturity: Cellular elements of peripheral blood. Am. J. Vet. Sci. 30:l92l-l927. Brown, J.W. and J.L. Schuster (l969) Effects of grazing on hardland site in the souther High Plains. J. Range Mgt. 22:4l8-423. Brown, W.S., F.H. Nawas, and J.B. Stevens (l973) The Oregon Big Game Resource: An Economic Evaluation. Oregon Agricultural Experiment Station Special Report 379. Corvallis, Oreg. Browning, B. (l960) Preliminary report of the food habits of the wild burro in the Death Valley National Monument. Desert Bighorn Council Trans. 78:88-90. Buckhouse, J.C. and G.F. Gifford (l976a) Water quality implications of cattle grazing on a semi-arid watershed in southwestern Utah. J. Range Mgt. 29:l09-ll3. Buckhouse, J.C. and G.F. Gifford (l976b) Sediment production and infiltration rates as affected by grazing and debris burning on chained and seeded pinyon-juniper. J. Range Mgt. 29:83-85. Buckhouse, J.C., R.W. Knight, and J.M. Skovlin (l979) Some erosional and water quality responses to selected grazing practices in northeastern Oregon. In Proceedings of the Oregon Academy of Science Annual Meeting, Gresham, Oreg. Buechner, H.K. (l960) The Bighorn Sheep in the United States, Its Past, Present and Future. Wildlife Monograph No. 4. Burt, O.R. (l97l) A dynamic model of pasture and range improvements. Am. J. Agr. Econ. 53:l97-205. Chiu, Y.C., R.K. Tripathi, and R.D. O'Brien (l972) Differences in reactivity of four butyrlcholinesterase isozymes towards substrate and inhibitors. Biochem. Biophys. Res. Comm. 46:35-42. Cable, D.R. and R.P. Shumway (l966) Crude protein in rumen contents and in forage. J. Range Mgt. l9:l24-l28. Carothers, S.W. (l977) Biology and ecology of feral burros (Equus asinus) at Grand Canyon National Park, Arizona. Final Research Report to National Park Service, Grand Canyon National Park, Arizona. Carothers, S.W., M.E. Stit, and R.R. Johnson (l977) Feral asses on public land: An analysis of biotic impact, legal considerations and management alternatives. Trans. No. Amer. Wild, and Nat. Res. Conf. 4l:396-406. Casebeer, R.L. and G.G. Koss (l970) Food habits of wildebeest, zebra, hartebeest and cattle in Kenya Masailand. E. Afr. Wildl. J. 8:25-36. Caslick, E.A. (l937) The sexual cycle and its relation to ovulation with breeding records of the thoroughbred mare. Cornell Vet. 27:l87-206. Caughley, G. (l974) Bias in aerial survey. J. Wildl. Mgt. 38:92l-933. Caughley, G. and J. Goddard (l975) Abundance and distribution of elephants in the Luangwa Valley, Zambia. E. Afr. Wildl. J. l3:39-48. Caughley, G., R. Sinclair, and D. Scott-Kemmis (l976) Experiments in aerial survey. J. Wildl. Mgt. 40:290-30.

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232 USDA, Forest Service General Technical Report INT-l. Washington, D.C.: USDA. Cook, C.W. (l975) Wild horses and burros: A new management problem. Rangeman's J. 2:l9-2l. Cook, C.W. and L.E. Harris (l968) Nutritive Value of Seasonal ranges. Utah Agricultural Experiment Station Bulletin 472. Cook, C.W., K. Taylor, and L.E. Harris (l962) Effects of range condition and intensity of grazing upon daily intake and nutritive value of the diet on desert ranges. J. Range Mgt. l5:l-6. Cook, C.W., L.A. Stoddart, and L.E. Harris (l953) Effects of grazing intensity upon the nutritive value of range forage. J. Range Mgt. 6:5l-54. Cook, C.W., L.E. Harris, and M.C. Young (l967) Botanical and nutritive content of diets of cattle and sheep under single and common use on mountain range. J. Anim. Sci. 26:ll69-ll74. Cook, R.D. and F.B. Martin (l974) A model for quadrant sampling with "visibility bias." J. Am. Stat. Assoc. 69:345-349. Cooper, J.L. (l978) A technique for evaluating and predicting the impact of grazing on stream channels. In Transactions of the Bonneville Chapter, American Fisheries Society, Salt Lake City, Utah, Feb. 3-4. Cordingly, R.V. and W.G. Kearl (l975) Economics of range reseeding in the plains of Wyoming. Wyo. Agr. Exp. Sta. Res. J. 98. Cordova, F.J., J.D. Wallace, and R.D. Pieper (l977) Forage intake by grazing livestock: A review. J. Range Mgt. 31:430-438. Cottam, W.P. and G. Stewart (l940) Plant succession as a result of grazing and of meadow dessication before erosion since settlement in l862. J. Forest. 38:6l3-626. Crook, J.H. (l970) Social organization and the environment: Aspects of contemporary ethology. Anim. Behav. l8:l97-209. Crowell, K.L. (l973) Experimental zoogeography: Introductions of mice to small islands. Am. Nat. l07:535-558. Crowell, K.L. and S.L. Pimm (l976) Competition and niche shifts of mice introduced onto small islands. Oikos. 27:25l-258. Currie, P.O. (l975) Grazing Management of Ponderosa Pine-Bunchgrass Ranges of the Central Rocky Mountains: The Status of our Knowledge. USDA, Forest Service Research Paper RM-159. Washington, D.C.: USDA. Currie, P.O. and G. Peterson (l966) Using growing season precipitation to predict crested wheatgrass yields. J. Range Mgt. l9:284-288. Currie, P.O., D.W. Reichert, J.C. Malechek, and O.C. Wallmo (l977) Forage selection comparisons for mule deer and cattle under managed ponderosa pine. J. Range Mgt. 30:352-356. Czaplewski, N.J., G.A. Ruffner, and A.M. Phillips, III (l977) Investigations on small mammal communities in three habitat types, Grand Canyon, Arizona. Pages ll4-l29, G.A. Ruffner, A.M. Phillips, III, and N.H. Goldberg, eds., Biology and Ecology of Feral Burros (Equus asinus) at Grand Canyon National Park, Arizona. Final research report to USDI, NPS, Grand Canyon National Park. Dahl, B.E. (l963) Soil moisture as a predictive index to forage yield for the Sandhills range type. J. Range Mgt. l6:l28-l32.

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