Index Catalog // ScholarsArchive@OSU

Geographic variation in distribution and cover of principle native and non-native plant species along gradients of topography, climate, and disturbance in protected-area sagebrush steppe communities of the Columbia Plateau

Creator:: Esposito, Daniel M.
Abstract:: The sagebrush steppe ecosystem of the Columbia Plateau has become degraded by a long history of alternative land use and associated perturbations. Protection of remnant stands of intact sagebrush steppe currently relies upon their preservation within the nation's network of parks and protected-areas. The John Day Fossil Beds National Monument,...
Resource Type:: Masters Thesis
Full Text:: Species along Gradients of Topography, Climate, and Disturbance in Protected-area Sagebrush Steppe

Effects of plant community characteristics on insect abundance : implications for sage-grouse brood-rearing habitat

Creator:: Ersch, Erica A.
Abstract:: A causative factor in declining greater sage-grouse (Centrocercus urophasianus) populations is reduced annual recruitment due to poor habitat quality. Sage-grouse population decline is concurrent with a decline in the extent and quality of the sagebrush (Artemisia sp.) biome. However, current research has shown a positive relationship between sage-grouse brood and...
Resource Type:: Masters Thesis
Full Text:: characteristics in sagebrush steppe ecosystems, in anticipation of improving sage-grouse brood-rearing habitat

Long-term Fuel Succession in the Sagebrush-steppe

Creator:: Reis, Schyler Ainsworth
Abstract:: Historically fire has been the primary disturbance factor in the sagebrush-steppe. The settlement of the West by Euro-Americans, grazing by domestic livestock, and the concomitant spread of invasive species have altered the historical fire regime. Understanding the long-term vegetation structure and fuel succession of the various sagebrush-dominated communities of this...
Resource Type:: Masters Thesis
Full Text:: Succession in Big Sagebrush Steppe with Livestock Grazing. Rangeland Ecology & Management 62, 98–110

Long-term Fire Effects on Plant Succession and Exotic Weeds in Protected Area Sagebrush Steppe, John Day Fossil Beds National Monument, Oregon

Creator:: Reed-Dustin, Claire Marie
Abstract:: The historical function of fire in sagebrush steppe has been altered by 19th century overgrazing, active fire suppression, annual grass invasion and encroachment of woody species. The significance of fire to these systems is known, but research on long-term fire effects are limited. The Sheep Rock management unit of the...
Resource Type:: Masters Thesis
Full Text:: protected area sagebrush steppe, John Day Fossil Beds National Monument, Oregon

Correspondence of soil properties and classification units with sagebrush communities in southeastern Oregon

Creator:: Lentz, Rodrick David
Abstract:: This research employed multivariate analytical techniques to statistically examine the relationship between individual soillandscape units (SLUs) in Southeastern Oregon and their associated sagebrush communities. The objective was to determine if soil properties between SLUs differed, describe the variation, and verify that these differences were reflected in the taxonomic class of...
Resource Type:: Masters Thesis
Full Text:: with Sagebrush Communities in Southeastern Oregon AN ABSTRACT OF THE THESIS OF Rodrick D. Lentz for

Vegetation response to prescribed fire in mountain big sagebrush ecosystems at Lava Beds National Monument, California

Creator:: Ellsworth, Lisa M.
Abstract:: Anthropogenic land use alterations such as livestock grazing and fire suppression have greatly altered sagebrush grasslands of the Great Basin, facilitating invasion of exotic annuals, increases in woody species, and losses of native species. Much of the current research surrounding wildland and prescribed fire in sagebrush dominated ecosystems has focused...
Resource Type:: Masters Thesis
Full Text:: historically the dominant disturbance throughout the sagebrush steppe and the plant species that comprised

Cardaria draba (L.) Desv. in the sagebrush ecosystem of northeastern Oregon

Creator:: Smergut, Teresa A.
Abstract:: Ranchers and resource managers have become concerned about the role and spread of Cardaria draba (L.) Desv. (whitetop) in the sagebrush steppe of Northeastern Oregon. This area is an important natural resource for livestock production and big game winter range. An area near Keating, Oregon was selected to study the...
Resource Type:: Masters Thesis
Full Text:: ) in the sagebrush steppe of Northeastern Oregon. This area is an important natural resource for

Spatial and age class analysis of managed western juniper (Juniperus occidentalis) woodlands in central Oregon

Creator:: Zophy, Kelley T.
Abstract:: Juniper is a native species to Oregon and confers ecological benefits to wildlife when it is at savannah and transitional densities. Its range and extent have fluctuated with climatic change, but the current range expansion is unprecedented in its extent. The range expansion has been associated with the degradation of...
Resource Type:: Masters Thesis
Full Text:: been associated with the degradation of the sagebrush steppe ecosystem in central Oregon. In the

Response of Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) to defoliation of understory grasses and drought

Creator:: Purrington, Teal Mackenzie
Abstract:: Water potential, leaf conductance, growth, nitrogen content, and seedling survival of Wyoming Big Sagebrush (Artemisia tridentata ssp. wyomingensis) following defoliation of the herbaceous understory were assessed during two growing seasons. Precipitation was 107% and 63% of the long-term mean (283 mm) in 1989 and 1990, respectively, which presented an opportunity...
Resource Type:: Masters Thesis
Full Text:: shrub in North America. It is the dominant shrub characterizing the Intermountain Sagebrush Steppe

Ecological effects of spring and fall prescribed burning on basin big sagebrush : Idaho fescue--bluebunch wheatgrass communities

Creator:: Sapsis, David B.
Abstract:: The vegetation response of spring and fall prescribed fires in basin big sagebrush (Artemisia tridentata subsp. tridentata Nutt.)/Idaho fescue (Festuca idahoensis Elmer)--bluebunch wheatgrass (Agropyron spicatum Pursh. (Scribn. & Smith)) communities was measured at the John Day Fossil Beds National Monument in eastern Oregon. Objectives of the study were to quantify...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Geographic variation in distribution and cover of principle native and non-native plant species along gradients of topography, climate, and disturbance in protected-area sagebrush steppe communities of the Columbia Plateau

Effects of plant community characteristics on insect abundance : implications for sage-grouse brood-rearing habitat

Long-term Fuel Succession in the Sagebrush-steppe

Long-term Fire Effects on Plant Succession and Exotic Weeds in Protected Area Sagebrush Steppe, John Day Fossil Beds National Monument, Oregon

Correspondence of soil properties and classification units with sagebrush communities in southeastern Oregon

Vegetation response to prescribed fire in mountain big sagebrush ecosystems at Lava Beds National Monument, California

Cardaria draba (L.) Desv. in the sagebrush ecosystem of northeastern Oregon

Spatial and age class analysis of managed western juniper (Juniperus occidentalis) woodlands in central Oregon

Response of Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) to defoliation of understory grasses and drought

Ecological effects of spring and fall prescribed burning on basin big sagebrush : Idaho fescue--bluebunch wheatgrass communities

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