Index Catalog // ScholarsArchive@OSU

Silvicultural impacts of sheep grazing in Oregon's Coast Range

Creator:: Leininger, Wayne C.
Abstract:: A three-year investigation was conducted during 1980-1982 to evaluate the potential of using herded sheep as a silvicultural tool to suppress brush in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range. Sheep browsing of Douglas-fir was highest in May soon after bud break. Averaged over the 2 years of grazing,...
Resource Type:: Dissertation

Influence of cow age/experience and landscape thermal regimes on distribution and grazing patterns of cattle in northeastern Oregon mixed conifer forested rangelands

Creator:: Wells, Micah
Abstract:: Two studies were conducted to determine the factors influencing distribution of cattle on northeastern Oregon mixed-conifer forested rangelands. The objective of the first study was the quantification of differences in distribution of cattle of different ages. Beginning in 1991, and continuing through 2001, radio telemetry collars were placed on a...
Resource Type:: Masters Thesis
Full Text:: native cattle. Philippine Agriculturist 48, 463-474. Miller, Richard F. and Krueger William C. (1976

Western juniper encroachment into aspen communities in the Northwest Great Basin

Creator:: Wall, Travis G.
Abstract:: In the Northwest Great Basin, aspen (Populus tremuloides) communities uniquely contribute to the biodiversity of a semi-arid, sagebrush-dominated landscape. In this same region, western juniper (Juniperus occidentalis) is encroaching into aspen stands. This study determined the timing, extent, and some of the effects of this expansion. Aspen stands below 2,133...
Resource Type:: Masters Thesis

The influence of environmental attributes on temporal and structural dynamics of western juniper woodland development and associated fuel loading characteristics

Creator:: Johnson, Dustin D.
Abstract:: Since European American settlement of the Intermountain Region, dramatic changes in vegetation composition and structure have occurred in the sagebrush steppe ecosystem. Western juniper (Juniperus occidentalis spp. occidentalis Vasek), although indigenous to the Intermountain Region, has increased since the late 1800s. Considerable work has been done documenting juniper woodland expansion...
Resource Type:: Masters Thesis

"The Island" Research Natural Area : a vegetation study with time and location comparisons

Creator:: Fox, M. Anne, 1939-
Abstract:: The purpose of this study was to document vegetation on "The Island", a Research Natural Area at the confluence of the Crooked River and the Deschutes River in central Oregon's Juniperus occidentalis Zone and to compare the results with an earlier study reported in 1964 from 1960-'61 data. Present-day comparisons...
Resource Type:: Masters Thesis

Community structure of old-growth Juniperus occidentalis woodlands

Creator:: Waichler, Wendy Sims
Abstract:: Knowledge of old-growth Juniperus occidentalis woodlands, which occur in central and eastern Oregon, is limited. Wise management of these woodlands necessitates a better understanding of the community ecology. The community structure of woodlands at seven sites in three areas of central Oregon was studied. Measurements taken at nine plots per...
Resource Type:: Masters Thesis

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

Understory vegetation response and nitrogen cycling following cutting of western juniper

Creator:: Bates, Jonathan D.
Abstract:: Since the late 1880's western juniper has expanded in range and increased in density in sagebrush-bunchgrass, riparian, and forested plant communities of the Pacific Northwest. Succession to western juniper woodland has been shown to reduce the productivity and diversity of the understory component, result in concentration of soil nutrients beneath...
Resource Type:: Dissertation

Re-establishment of native perennial bunchgrasses in juniper/medusahead rangelands

Creator:: Washington, Joseph P.
Resource Type:: Masters Thesis

The use of remote sensing and Geographic Information Systems (GIS) in assessing changes in stream morphology and vegetation

Creator:: Laliberte, Andrea S.
Abstract:: Remote sensing and Geographic Information Systems (GIS) are well known tools for the study of time change analysis in natural systems. However, long-term studies of riparian systems using large-scale aerial photography are less common. The purpose of this project was to combine large scale aerial photography, GIS, Global Positioning Systems...
Resource Type:: Masters Thesis
Full Text:: :467-474. Swanson, S. and I. Kamyab. 1996. Simulated stream bank erosion of surface and subsurface

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

The influence of grazing systems on the performance and diet of yearling cattle

Creator:: Berry, Timothy James
Abstract:: Research was conducted at the Starkey Experimental Forest and Range in northeastern Oregon to determine cattle performance, diet quality, botanical composition of forage ingested, and production and utilization among rest-rotation, season-long, and deferred rotation grazing systems. The grazing season lasted from June 20 to October 10 of each year. Cows...
Resource Type:: Masters Thesis

Describing the thermal regimes of two northeastern Oregon streams

Creator:: Raven, Sonja E.
Abstract:: Two tributaries of the south fork of the Burnt River, near Unity Oregon were studied during the summers of 2000 and 2001 to determine water heating and cooling patterns. Hourly temperature data were recorded for air, water, and soil parameters at four elevations 150m apart on Barney and Stevens Creeks....
Resource Type:: Masters Thesis

Overland flow and sediment production potentials in logged and nonlogged sites of a ponderosa pine forest in northeastern Oregon

Creator:: Williams, John Dana
Abstract:: The purpose of this research was to determine if overland flow and sediment production were different in logged (on snow, frozen soil, and prescribed skid trails) and nonlogged sites in a Pinus ponderosa Laws.! Symohoricaroos albus Laws. community in the foothills of the Wallowa Mountains in northeastern Oregon. To determine...
Resource Type:: Masters Thesis

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

Grazing relationships of elk, deer and cattle on seasonal rangelands in northeastern Oregon

Creator:: Sheehy, Dennis Patrick
Resource Type:: Dissertation

The effects of vegetation type and grazing system on the performance, diet and intake of yearling cattle

Creator:: Holechek, Jerry Lee
Resource Type:: Dissertation

A landscape-scale assessment of plant communities, hydrologic processes, and state-and-transition theory in a Western juniper dominated ecosystem

Creator:: Petersen, Steven Lawrence
Abstract:: Western juniper has rapidly expanded into sagebrush steppe communities in the Intermountain West during the past 120 years. This expansion has occurred across a wide range of soil types and topographic positions. These plant communities, however, are typically treated in current peer-reviewed literature generically. The focus of this research is...
Resource Type:: Dissertation

An interpretation of synecologic relationships in the Billy Meadows area of the Wallowa-Whitman National Forest

Creator:: Johnson, Charles G.
Resource Type:: Dissertation

ScholarsArchive@OSU

Silvicultural impacts of sheep grazing in Oregon's Coast Range

Influence of cow age/experience and landscape thermal regimes on distribution and grazing patterns of cattle in northeastern Oregon mixed conifer forested rangelands

Western juniper encroachment into aspen communities in the Northwest Great Basin

The influence of environmental attributes on temporal and structural dynamics of western juniper woodland development and associated fuel loading characteristics

"The Island" Research Natural Area : a vegetation study with time and location comparisons

Community structure of old-growth Juniperus occidentalis woodlands

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

Understory vegetation response and nitrogen cycling following cutting of western juniper

Re-establishment of native perennial bunchgrasses in juniper/medusahead rangelands

The use of remote sensing and Geographic Information Systems (GIS) in assessing changes in stream morphology and vegetation

Grazing behavior and distribution of cattle on mountain rangelands

The influence of grazing systems on the performance and diet of yearling cattle

Describing the thermal regimes of two northeastern Oregon streams

Overland flow and sediment production potentials in logged and nonlogged sites of a ponderosa pine forest in northeastern Oregon

Conditioning bunchgrass on elk winter range

Grazing relationships of elk, deer and cattle on seasonal rangelands in northeastern Oregon

The effects of vegetation type and grazing system on the performance, diet and intake of yearling cattle

A landscape-scale assessment of plant communities, hydrologic processes, and state-and-transition theory in a Western juniper dominated ecosystem

An interpretation of synecologic relationships in the Billy Meadows area of the Wallowa-Whitman National Forest

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