Index Catalog // ScholarsArchive@OSU

Interspace/under-canopy foraging patterns of beef cattle in sagebrush communities : implications to sage-grouse nesting habitat

Creator:: France, Kevin A.
Abstract:: Livestock grazing has been indirectly related to sage-grouse (centrocercus urophasianus) declines in the western United States and southern Canada; however, there is a lack of scientific research that directly relates the two. Our objective was to investigate the influence of livestock herbivory on sage-grouse nesting habitat by determining the spatial...
Resource Type:: Masters Thesis
Full Text:: the bottom and 13 being the top) of the Robel pole at Foster Flat, Oregon in 2004. 39 Life-test

Placement of felled western juniper trees over a stream channel : Effects on water temperature, streamside willow shrubs, and redband trout

Creator:: Matney, Casey A.
Abstract:: All streams in Oregon that are inhabited by salmon and trout have a statemandated water temperature standard. However, temperatures of many streams, especially during summer months, exceed the seven-day average maximum temperature parameter (200 C for redband trout inhabited streams) accepted by the Oregon Department of Environmental Quality. To date,...
Resource Type:: Masters Thesis
Full Text:: Tarlzen K. S AN ABSTRACT OF THE THESIS OF Casey A. Matney for

The effect of grazing interval on forage quality and production of meadow foxtail

Creator:: Wenick, Jess J.
Abstract:: For the last fifty years, meadow foxtail (Alopecurus pratensis L.) has been invading native flood meadows throughout the Harney Basin in southeastern Oregon. The expansion of this grass species has been the result of its broad climatic requirements and ability to withstand drought while thriving in saturated soil conditions for...
Resource Type:: Masters Thesis
Full Text:: of Burns, Oregon (43° 31' N, 1190 02' W). Burns is located in northern Harney County, 300 km (180

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
Full Text:: of the Cascades, it also extended from Trinity County California to southern Jackson County Oregon

Sediment potentials for selected ecological land units in central Oregon

Creator:: Mattison, Jeffrey L.
Abstract:: During the summers of 1975 and 1976 a sedimentation study was conducted in the Bear Creek watershed, located in the southeastern corner of Crook County, in central Oregon. The Rocky Mountain infiltrometer was used to simulate high intensity rainfall over 468 sedimentation plots. Rainfall and runoff were measured and a...
Resource Type:: Masters Thesis
Full Text:: Creek watershed, located in the south- eastern corner of Crook County, in central Oregon. The Rocky

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
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Steven L. Petersen for the

Quantification of vegetation diversity and variation on intact and degraded rangelands

Creator:: Dysart, Patricia L.
Abstract:: Vegetation diversity in the Wyoming big sagebrush/Thurber needlegrass (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young/Achnatherum thurberianum (Piper) Barkworth. syn. Stipa thurberiana Piper) plant association was studied across a condition class gradient in southeastern Oregon. All observable vascular plant species were counted during 6 seasons and 2 years and diversity...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Patricia L. Dysart for the degree

Changes in plant communities following rangeland brush control

Creator:: Findley, Roger Raymond
Abstract:: Recently, the big sagebrush taxa has been split into subspecies and forms. Four habitat types related to subspecies of big sagebrush were studied in Eastern Oregon. Response of understory vegetation was measured following three range improvement techniques implemented on the four habitat types for several ages of treatment. Crown cover,...
Resource Type:: Masters Thesis
Full Text:: CONTROL INTRODUCTION Oregon has an estimated ten million acres of sagebrush (Artemisia spp.) grass

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
Full Text:: AN ABSTRACT OF THE THESIS OF Dustin D. Johnson for the degree

Understory response to tree harvesting in pinyon-juniper woodlands

Creator:: Everett, Richard L.
Abstract:: Understory species associations and their association with tree species were examined on three intensively studied stands. We studied the chronosequence of understory species associated with different aged singleleaf pinyon (Pinus monophylla Torr. and Frem.) trees. Mid- to late pinyon-juniper understory succession was found to be more spatial than floristic in...
Resource Type:: Dissertation
Full Text:: Woodlands AN ABSTRACT OF THE THESIS OF Richard L. Everett for the degree of Doctor of Philosophy in

ScholarsArchive@OSU

Interspace/under-canopy foraging patterns of beef cattle in sagebrush communities : implications to sage-grouse nesting habitat

Placement of felled western juniper trees over a stream channel : Effects on water temperature, streamside willow shrubs, and redband trout

The effect of grazing interval on forage quality and production of meadow foxtail

Community structure of old-growth Juniperus occidentalis woodlands

Sediment potentials for selected ecological land units in central Oregon

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

Quantification of vegetation diversity and variation on intact and degraded rangelands

Changes in plant communities following rangeland brush control

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

Understory response to tree harvesting in pinyon-juniper woodlands

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