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The effects of three levels of range improvements on Roosevelt elk nutrition

Creator:: Mereszczak, Ihor Myroslaw
Resource Type:: Masters Thesis
Full Text:: restricting the level of protein and energy in the diets of beef heifers (Bos taursus), Bond et al. (1958

Grazing behavior and distribution of cattle on mountain rangelands

Creator:: Gillen, Robert L.
Abstract:: Several aspects of cattle grazing behavior and distribution were studied on mountain rangeland dominated by ponderosa pine- Douglas fir, mixed conifer, and white fir forest communities in northeastern Oregon. The association between upland distribution, determined by forage utilization and by direct cattle observation, and several habitat factors was studied through...
Resource Type:: Dissertation
Full Text:: and this differ- ence must be recognized in management planning (Platts 1979). The special features

An evaluation of understory vegetation dynamics, ecosystem resilience and state and transition ecological theory in an eastern Oregon ponderosa pine forest

Creator:: Carr, Craig A.
Abstract:: Relatively recent increases in ponderosa pine abundance have effected unprecedented changes to ecosystem structure and function. Efforts to restore ponderosa pine systems are often focused on the manipulation of tree structure and the re-introduction of a more natural fire regime. Successful restoration should also incorporate understory components but information addressing...
Resource Type:: Dissertation
Full Text:: was appreciated. I thank Bob Gillaspy of the NRCS for his interest in this research and for

Use of livestock to improve the quality of elk winter range forage in northeastern Oregon

Creator:: Clark, Patrick Eugene
Abstract:: The effects of late spring defoliation on the winter forage quality of bluebunch wheatgrass (Agropyron spicatum [Pursh] Scribn. & Smith), Idaho fescue (Festuca idahoensis Elmer) and elk sedge (Carex geyeri Boott) and the response of wintering Rocky Mountain elk (Cervus elaphus nelsoni Bailey) to changes in winter range forage quality...
Resource Type:: Dissertation
Full Text:: the region report sightings and evidence ofnumerous elk. In 1812, Robert Stuart, leader of John

Ecological relationships between cervid herbivory and understory vegetation in old-growth Sitka spruce-western hemlock forests in western Washington

Creator:: Happe, Patricia Jenkins
Abstract:: The relationships between black-tailed deer (Odocoileus hemionus columbianus) and Roosevelt elk (Cervus elaphus roosevelti) herbivory and understory vegetation in unmanaged forests in Olympic National Park were studied from 1985 - 1989. From 1985 to 1986 I studied the impact of cervid exclusion on shrub, fern, and forb forage quality, tannin...
Resource Type:: Dissertation
Full Text:: ecosystem stability (Smart et al. 1985, Frank and McNaughton 1992). In his research on the ungulate

Quality of bluebunch wheatgrass (Agropyron spicatum) as a winter range forage for Rocky Mountain Elk (Cervus elaphus nelsoni) in the Blue Mountains of Oregon

Creator:: Bryant, Larry Duane
Abstract:: This research was conducted on three study areas on elk winter ranges in Northeast Oregon. One was on the Starkey Experimental Forest and Range and the others were in the same vicinity. Plant appendages, spring and fall defoliation and fall growth of bluebunch wheatgrass were evaluated in terms of quality...
Resource Type:: Dissertation
Full Text:: . 1979). 6 PROBLEM STATEMENT Deer, elk, and cattle all graze on publicly owned lands in the Blue

Conditioning bunchgrass on elk winter range

Creator:: Westenskow, Kathy Jo
Abstract:: Research was conducted near the Starkey Experimental Forest and Range in northeastern Oregon. Effects of defoliating bluebunch wheatgrass (Agropyron spicatum (Pursh) Scribn. and Smith) to increase the quality of regrowth available on elk (Cervus elaphus nelsoni) winter range were studied from 1988 through 1990. Clipping treatments were implemented to condition...
Resource Type:: Masters Thesis
Full Text:: Mountains were 5.4% for early winter and 12.0% in late winter (Skov lin and Vavra 1979). A cattle grazing

Responses of vegetation and sheep to three grazing pressures

Creator:: Thetford, Frank Oren
Abstract:: A study was conducted over a two year period, 1973 through 1974, on perennial ryegrass-subclover pastures with stocking rates of 7.4 (moderate), 9. 9 (heavy), and 12.4 (overstocked) ewes per hectare to establish guidelines on stocking intensity for dryland improved pastures in western Oregon. Climatic conditions varied annually and caused...
Resource Type:: Dissertation
Full Text:: demands in the future the management of our lands and livestock must become more efficient in the

Residual leaf area as a measure of shrub use

Creator:: Reynolds, Mark P.
Abstract:: Leaf surface area present on black cottonwood (Populus trichocarpa) and Douglas hawthorn (Crataegus douglasi) was measured indirectly using a point frame, photographs, and a canopy analyzer. Each was compared to directly measured leaf surface area. Six black cottonwood and 3 Douglas hawthorn shrubs were selected in 1996 and 9 black...
Resource Type:: Masters Thesis
Full Text:: lacking advanced scientific training and working in a profession that is not research oriented

ScholarsArchive@OSU

The effects of three levels of range improvements on Roosevelt elk nutrition

Grazing behavior and distribution of cattle on mountain rangelands

An evaluation of understory vegetation dynamics, ecosystem resilience and state and transition ecological theory in an eastern Oregon ponderosa pine forest

Use of livestock to improve the quality of elk winter range forage in northeastern Oregon

Ecological relationships between cervid herbivory and understory vegetation in old-growth Sitka spruce-western hemlock forests in western Washington

Quality of bluebunch wheatgrass (Agropyron spicatum) as a winter range forage for Rocky Mountain Elk (Cervus elaphus nelsoni) in the Blue Mountains of Oregon

Conditioning bunchgrass on elk winter range

Responses of vegetation and sheep to three grazing pressures

Residual leaf area as a measure of shrub use

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