Index Catalog // ScholarsArchive@OSU

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

Cattle grazing habits and movements related to riparian habitats and forested ranges with inference to acute dietary bovine pulmonary emphysema (ADBPE)

Creator:: Roath, Leonard Roy
Abstract:: Grazing on the mountainous forested ranges of the Camp Creek Unit, Malhuer National Forest, was typified by irregular distribution of free-ranging cattle. A combination of management and physical, topographic constraints caused cattle to concentrate on the riparian zone early in the grazing season in 1977 and 1978. A large percentage...
Resource Type:: Dissertation
Full Text:: as affected by several factors. Johnstone-Wallace and Kennedy (1944) found that livestock were very

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

Creator:: Mereszczak, Ihor Myroslaw
Resource Type:: Masters Thesis
Full Text:: Bentgrass (Bentgrass-T): These pastures were tilled in the past. They most likely were once grain fields

Quantifying the impacts of riparian cattle grazing at Soap Creek Ranch near Corvallis, Oregon

Creator:: McArthur, Cynthia
Abstract:: A documented case history of riparian grazing at Oregon State University's Soap Creek Ranch was conducted from 1999 to 2001. Impacts of four different riparian grazing treatments were evaluated. Emphasis was placed on investigating the relationship between riparian cattle use and water quality. Through a series of carefully designed and...
Resource Type:: Masters Thesis
Full Text:: ) and Terminal Restriction Fragment Length Polymorphism ( T-RFLP). This method is not dependent upon

Modeling riparian zone processes : biomass production and grazing

Creator:: Korpela, Edwin J.
Abstract:: Seasonal trends in forage production and environmental parameters for five plant community types within a northeastern Oregon riparian zone were described and modeled using correlation and path analysis. Wet meadows produced the greatest amount of herbage biomass, followed by moist bluegrass meadows, gravel bars, forests and dry bluegrass meadows. Trends...
Resource Type:: Dissertation
Full Text:: D-- 120 E 0 t 100 % 3: 2 ao- A: 'EL 0 CI 60-- -44'P- MB 20 WM 0 May 10 June 22 July 13

A comparison of four methods used in determining the diets of large herbivores

Creator:: McInnis, Michael Lindsay
Abstract:: Esophageal fistulation, stomach content analysis, fecal analysis, and ocular-estimate-by-plot are four of the most publicized methods of determining the diets of large herbivores. The principal objective of this study was to compare the relative values of each of these methods based upon information collected from bi-fistulated (esophageal and rumen) sheep...
Resource Type:: Masters Thesis
Full Text:: the researcher, but the basic design of the device is "T" shaped. A flanged end is seated in the

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:: ). Numerous investigators (Wallace et al. 1966, Duvall 1970, Hanson and Smith 1970, Skovlin et al. 1983

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

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

ScholarsArchive@OSU

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

Cattle grazing habits and movements related to riparian habitats and forested ranges with inference to acute dietary bovine pulmonary emphysema (ADBPE)

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

Quantifying the impacts of riparian cattle grazing at Soap Creek Ranch near Corvallis, Oregon

Modeling riparian zone processes : biomass production and grazing

A comparison of four methods used in determining the diets of large herbivores

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

Grazing behavior and distribution of cattle on mountain rangelands

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

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