http://hdl.handle.net/10150/635676 Mon, 20 Apr 2026 07:36:55 GMT 2026-04-20T07:36:55Z http://hdl.handle.net/10150/650422 Journal of Range Management, Volume 26, Number 5 (September 1973) Complete digitized issue. Sat, 01 Sep 1973 00:00:00 GMT http://hdl.handle.net/10150/650422 1973-09-01T00:00:00Z http://hdl.handle.net/10150/647368 Water Repellency of Soils under Burned Sagebrush Salih, M. S. A.; Taha, F. K.; Payne, G. F. Burning of sagebrush produces water repellency in soils. Maximum repellency occurs at soil temperatures between 1400 and 1800 degrees F. The field test indicated that repellency is produced as a result of the burning of the sagebrush leaf mulch under the shrub rather than the burning of the live plant material. Sat, 01 Sep 1973 00:00:00 GMT http://hdl.handle.net/10150/647368 1973-09-01T00:00:00Z http://hdl.handle.net/10150/647361 Use of a Crested Wheatgrass Seeding by Black-tailed Jackrabbits Westoby, M.; Wagner, F. H. Black-tailed jackrabbit grazing pressure on a seeding of crested wheatgrass surrounded by native shrub vegetation has been estimated by the use of pellet counts. Grazing pressure falls off rapidly away from the edge of the field, 70% of the total being concentrated in a 300-m band around the edge of the field. By calibrating the pellet counts against others taken in an area of known jackrabbit density, and by using values available in the literature for forage consumption of jackrabbits, an estimate has been made of the absolute grazing pressure on the field in the 300-m band which is predominantly used. The forage removed by jackrabbits in this zone is estimated to be in the order of 60 kg/ha/yr. This is less than 10% of nearly all the yield values found, including those in poor years, in comparable seedings in this area. Apparently jackrabbits do not cause serious damage to established seedings of wheatgrass even when jackrabbit densities are high, as they were at the time of this study. Sat, 01 Sep 1973 00:00:00 GMT http://hdl.handle.net/10150/647361 1973-09-01T00:00:00Z http://hdl.handle.net/10150/647360 Ungulate Diets in the Lower Grand Canyon Hansen, R. M.; Martin, P. S. Plant fragments were identified and quantified by a microscopic examination of the dung of the burro, cattle, and bighorn in the western end of the Grand Canyon, Arizona. Genera of plants common to the diets of all three ungulates were: Sphaeralcea, Bromus, Tridens, Muhlenbergia, Acacia, Ephedra, Opuntia and Tidestromia. Wherever free ranging large herbivores occur, as in the Lake Mead National Recreation Area, it is possible to study their diets by analysis of their dung. The diet of modern large herbivores can be compared with the unique Pleistocene record of ground sloth and extinct mountain goat dung preserved for over 11,000 years in adjacent caves. Sat, 01 Sep 1973 00:00:00 GMT http://hdl.handle.net/10150/647360 1973-09-01T00:00:00Z