Index Catalog // ScholarsArchive@OSU

The thermal characteristics of hydrologically intact Type C and E streams in eastern Oregon

Creator:: Hopkins, Karl T.
Abstract:: Many streams in eastern Oregon are listed as water quality impaired on the basis of water temperature. However, it is often difficult to predict water temperature for these streams even if there are no anthropogenic impacts. We measured air and water temperature and stream characteristics on three Type C and...
Resource Type:: Masters Thesis
Full Text:: of Hdrologically Intact Type C and E Streams in Eastern Oregon Abstract approved: n3J. Svej Many

The influence of environmental and physical factors on the thermal patterns of headwater streams

Creator:: Carr, Craig A.
Abstract:: A case study was performed in 2000 and 2001 to characterize the thermal pattern of four morphologically similar eastern Oregon streams and to identify the physical and environmental factors that expressed significant and functionally viable relationships with stream temperature (daily maximum, daily minimum and daily rate of heating). Stream and...
Resource Type:: Masters Thesis
Full Text:: morphologically similar eastern Oregon streams and to identify the physical and environmental factors that

A characterization of seasonal pools in Central Oregon's high desert

Creator:: Dlugolecki, Laura
Abstract:: Seasonal wetlands in arid and semi-arid lands provide an important source of surface water in otherwise dry lands. Central Oregon's high desert, located in the Northern Great Basin (NGB) is dotted with hundreds of seasonal pools, locally called playas. The playas hold water or snow during parts of winter and...
Resource Type:: Masters Thesis
Full Text:: submitted to Oregon State University in partial fulfillment of the requirements for

Susceptibility of select salmonids to Myxobolus cerebralis and effects of exposure on anadromous salmonids in Oregon

Creator:: Sollid, Sarah A.
Abstract:: Myxobolus cerebralis, a myxozoan parasite of salmonids, is the causative agent of whirling disease. The parasite is considered widespread throughout northeastern Oregon in the Grande Ronde and Imnaha River basins where threatened and endangered salmonid populations exist. The work presented in this thesis comprises several studies that assess the effects...
Resource Type:: Masters Thesis
Full Text:: Salmonids to Myxobolus cerebralis and Effects of Exposure on Anadromous Salmonids in Oregon. Abstract

Morphological characteristics of ponderosa pine and lodgepole pine regeneration nine years after stand density reduction at three sites in central Oregon

Creator:: Michel, Alexa K.
Abstract:: Without the natural occurrence of fire in ponderosa pine forests of the western US, lodgepole pine has started to dominate regeneration in many forest stands and may be gradually replacing ponderosa pine over time. This development, however, conflicts with recent efforts in this region to restore old-aged, open ponderosa pine...
Resource Type:: Masters Thesis
Full Text:: Three Sites in Central Oregon I b. hdr::ir-t ::mArrwlcJ / .3i!Jnature redacte~ for priva,:v

Groundwater elevations and temperature adjacent to a beaver pond in central Oregon

Creator:: Lowry, Michael M.
Abstract:: This study was designed and implemented to observe the spatial and temporal dynamics of groundwater levels and temperatures adjacent to a beaver pond in semi-arid central Oregon. The study site was located on the eastern boundary of Painted Hills National Monument along Bridge Creek, a tributary to the John Day...
Resource Type:: Masters Thesis

Twenty-year changes in riparian bird communities of east-central Oregon

Creator:: Ellis, Michael S.
Abstract:: Over the last 50 years, riparian zones in the semi-arid West have gained recognition as disproportionately important habitats for both breeding bird communities and agricultural operations. Despite growing interest in exploring avian-habitat relationships in these systems to better inform land management, few studies have attempted to describe temporal changes in...
Resource Type:: Masters Thesis
Full Text:: Fisheries & Wildlife Fund and the Eastern Oregon Agriculture & Natural Resource Program (EOANRP). We thank

Persistence of western juniper resource islands following canopy removal

Creator:: Miwa, Christopher
Abstract:: Western juniper (Juniperus occidentalis) cover has more than doubled within the last century and currently occupies over 9 million acres in the Intermountain West. Encroachment has altered the spatial distribution of soil nutrients and plants in these systems, forming nutrient enriched 'resource islands,' under tree canopies. The purpose of this...
Resource Type:: Masters Thesis
Full Text:: grazing allotment in Eastern Oregon where trees had been cut 1, 8 and 15 years ago. In each age class

Effects of environmental variables and grazing on planted willow (Salix boothii Dorn) cuttings

Creator:: Lowson, Katherine L.
Abstract:: The influence of streambank location and timing of herbivory on success of planted Booth's willow (Salix boothii Dorn) cuttings along a Rosgen C5-type stream in an eastern Oregon meadow was determined. Willow cuttings were planted on two morphological locations (i.e. point bar and floodplain) in May of 2002 and 2003....
Resource Type:: Masters Thesis
Full Text:: willow (Salix boothii Dorn) cuttings along a Rosgen C5-type stream in an eastern Oregon meadow was

Sustainable biomass supply from fuel reduction treatments : a biomass assessment of federally owned land in eastern Oregon

Creator:: Vogler, Kevin C.
Abstract:: Wildfire exclusion over the past century or more has resulted in extensive fuel accumulations throughout much of the West that combined with recent climatic patterns have increased the frequency of relatively uncommon, large, high-severity wildfires. Forest restoration treatments intended to alter landscape-level fire disturbance patterns can be difficult to implement...
Resource Type:: Masters Thesis
Full Text:: : A Biomass Assessment of Federally Owned Land in Eastern Oregon AN ABSTRACT OF THE

An experimental reintroduction of Pleuropogon oregonus, a rare wetland grass native to Oregon

Creator:: Groberg, Matthew G.
Abstract:: Pleuropogon oregonus Chase is a rare wetland grass endemic to eastern Oregon. The species is composed of two widely separated populations, one in Lake County and one in Union County. In order to reduce the risk of extinction, the Oregon Department of Agriculture Native Plant Conservation Program initiated several reintroduction...
Resource Type:: Masters Thesis
Full Text:: . Meinke Pleuropogon oregonus Chase is a rare wetland grass endemic to eastern Oregon. The species is

Phylogenetic and morphometric analysis of speckled dace (Rhinichthys osculus) from Oregon's Great Basin

Creator:: Hoekzema, Kendra L.
Abstract:: Speckled dace (Rhinichthys osculus) is a small cyprinid that is geographically widespread throughout western North America, and the most frequently occurring sh in Oregon. Because of the genetic and morphological variation in this species across its range, it has been referred to as a "species complex" and no revision to...
Resource Type:: Masters Thesis

Seed bank response to juniper expansion in the semi-arid lands of Oregon, USA

Creator:: Duncan, Corinne M.
Abstract:: Expansion of Juniperus occidentalis into the sagebrush steppe has resulted in significant changes in understory composition. A consequence of increased J. occidentalis dominance may be a depletion of the seed bank. The potential for depletion is problematic because a reduction in the amount of species available from the seed bank...
Resource Type:: Masters Thesis
Full Text:: thresholds based on seed density. Two eastern Oregon sagebrush steppe sites where chosen to represent the

The "great hope" : bioenergy in eastern Oregon and its implications for dry forest restoration

Creator:: Nuss, Meagan Louise
Abstract:: Oregon has been moving forward with biomass energy development. Large-scale biomass power and cogeneration (producing heat and electricity) have been the focus of the last twenty-five years, while small-scale thermal bioenergy installations (producing heat) have dramatically increased during the last decade. In eastern Oregon, bioenergy is closely linked to restoration...
Resource Type:: Masters Thesis
Full Text:: The "Great Hope": Bioenergy in Eastern Oregon and its

Conditioning of northern Great Basin grasses with livestock grazing

Creator:: Aguilera, Lisa M.
Abstract:: Because forage quality of cool season grasses declines to sub-maintenance levels for ruminants late in the growing season in the northern Great Basin, there is a need to elevate protein levels and digestibility of grasses for both wild and domestic ruminants in late summer. Anderson and Scherzinger (1975) proposed using...
Resource Type:: Masters Thesis

The effects of defoliation on Bromus tectorum seed production and growth

Creator:: Mayer, Kara Hempy
Abstract:: Cheatgrass (Bromus tectorum L.) is a widespread exotic weed in the Intermountain sagebrush steppe. An annual grass, it is highly prolific and very competitive with native perennial grass seedlings. A clipping experiment carried out at two cheatgrass-dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation...
Resource Type:: Masters Thesis
Full Text:: -dominated sites (Lincoln Bench and Succor Creek) in eastern Oregon analyzed effects of defoliation on

Vegetation and soil response to tree removal methods in invasive western juniper woodlands

Creator:: O'Connor, Casey A.
Abstract:: On piñon-juniper encroached sites that lack the understory fuels to carry a prescribed fire, treatment options are limited to mechanical methods. Cutting with chainsaws and leaving the trees on site has been the primary treatment method for such sites, however this method creates a potential fire hazard, particularly in the...
Resource Type:: Masters Thesis
Full Text:: juniper biome, occupying northeastern California, eastern Oregon, southwestern Idaho, northwestern

Assessment of the accuracy of forested classifications within two broad-scale remotely-sensed vegetation databases in eastern Oregon

Creator:: Langhoff, Cory A.
Abstract:: An accuracy assessment of two broad-scale vegetation databases for eastern Oregon, both developed from satellite imagery, was performed to assess the usefulness of the databases for forest landscape planning and assessment efforts. The two databases were the Oregon Department of Forestry (ODF) vegetation database and the U.S. Geological Survey National...
Resource Type:: Masters Thesis
Full Text:: Eastern Oregon Abstract approved ________________ _ Peter S. Bettinger An accuracy assessment of two

Greater sage-grouse movements and habitat use during winter in central Oregon

Creator:: Bruce, Jennifer R.
Abstract:: Greater sage-grouse (Centrocercus urophasianus), a sagebrush obligate species, has contracted in extent by nearly half its original distribution. This is primarily due to habitat loss and degradation over the past 150 years. During winter, sage-grouse depend completely on sagebrush habitat for food and cover, yet sage-grouse winter ecology has been...
Resource Type:: Masters Thesis
Full Text:: Desert Ecological Province in eastern Oregon, along the western edge of the current geographic range of

Breeding food barley : from agronomic assessment to marker assisted selection

Creator:: Rey, Juan Ignacio
Abstract:: This research was undertaken to provide barley growers, processors, and consumers with quality food barley. Because all currently available varieties of food barley are of spring growth habit, the first phase of the research involved agronomic assessment of these varieties under Oregon conditions. Because winter barley usually yields more than...
Resource Type:: Masters Thesis
Full Text:: the research involved agronomic assessment of these varieties under Oregon conditions. Because

Nitrogen management and variety selection for dryland production of hard red winter wheat in northeastern Oregon

Creator:: Jepsen, Daniel R.
Abstract:: Proper nitrogen (N) management and variety selection are important for profitable hard red winter (HRW) wheat production in the dryland growing regions of northeastern Oregon. In these dryland systems, N management for grain yield and grain protein concentration (GPC) is challenging due to climatic and year-to-year variation in production environments....
Resource Type:: Masters Thesis
Full Text:: long trips between Corvallis and field sites in Eastern Oregon. My gratitude also goes out to

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:: Eastern OR AN ABSTRACT OF THE THESIS OF Erica A. Ersch for the degree of Master of

Establishing native plants in crested wheatgrass stands using successional management

Creator:: Fansler, Valerie A.
Abstract:: Crested wheatgrass (Agropyron cristatum (L.) Gaertn.) is a nonindigenous perennial grass that was introduced to North America to improve the condition of degraded rangelands. It has proven to be a successful revegetation species due to its superior ease of establishment, strong competitive ability, and ability to tolerate grazing. However, crested...
Resource Type:: Masters Thesis
Full Text:: their land for the study. I appreciate the help of the staff at the Eastern Oregon Agricultural

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:: Ainsworth Reis A THESIS submitted to Oregon State University

Resource Selection and Space Use of Western Long-eared Myotis (Myotis evotis) in a Western Juniper (Juniperus occidentalis) Woodland of Central Oregon

Creator:: Anthony, Christopher R.
Abstract:: Identifying habitat and spatial requirements of wildlife species across multiple spatial scales is a challenging, yet crucial component of wildlife management. Habitat use of bats is particularly difficult to study, and managing habitat to conserve bats is especially challenging because bats are highly vagile organisms that exploit several different types...
Resource Type:: Masters Thesis
Full Text:: Juniper (Juniperus occidentalis) Woodland of Central Oregon. Abstract approved

Taxonomy and systematic relationships of tui chubs (Siphateles: Cyprinidae) from Oregon's Great Basin

Creator:: Remple, Stacy L.
Abstract:: There are three recognized species of Siphateles from the Great Basin; S. alvordensis, S. boraxobius and the tui chub, S. bicolor. One species, S. boraxobius, is endangered and one population of tui chub at Hutton Spring is threatened. Despite several morphological and molecular studies, the taxonomy and relationships of tui...
Resource Type:: Masters Thesis
Full Text:: basal polytomy containing a western clade from Sycan Marsh, an eastern clade from the Alvord Basin

Effects of green manures on verticillium wilt of potatoes and on soil properties related to disease suppression

Creator:: Ochiai, Naoyuki
Abstract:: Increasing regulation and costs of soil fumigation to manage diseases such as Verticillium wilt caused by soil-borne pathogens have prompted a search for management alternatives. Single-year microplot experiments were conducted in 2002 and 2003 in central Oregon to evaluate the effects of Austrian winter pea, broccoli, and Sudan grass green...
Resource Type:: Masters Thesis
Full Text:: -year microplot experiments were conducted in 2002 and 2003 in central Oregon to evaluate the effects

Environmental constraints on the use of anion exchange membranes in dryland wheat

Creator:: Redman, Andrea Elizabeth
Abstract:: Lack of growing season precipitation and the temperate climate in north central Oregon pose challenges to growing spring wheat crops. Phosphate and sulfate fertilization can improve early growth of spring wheat in this region and soil testing aids in determining rates of fertilization. In this study, anion exchange membranes (AEM)...
Resource Type:: Masters Thesis

Conflict and cooperation at the public-private interface : a case study of fire management in eastern Oregon

Creator:: Bergmann, Stefan Andrew
Abstract:: Cooperation across ownership boundaries is critical to most conservation efforts in mixed ownership landscapes. Where owner objectives vary widely, as at public-private landownership boundaries, cooperation can be especially challenging. This research explores the opportunities and challenges for cooperative fire management among public and private forest managers in the John Day...
Resource Type:: Masters Thesis
Full Text:: Cooperation at the Public-Private Interface: A Case Study of Fire Management in Eastern Oregon. ,;·· I __

Seedling response to vegetation management in northeastern Oregon

Creator:: Lindsay, Amanda A.
Abstract:: Northeastern Oregon geology and climate provides moderately productive conditions for forest management and timber production. Although site preparation and planting are commonly used silvicultural practices, little research exists on the efficacy of specific forest herbicides and responses of seedling survival and growth in this region. This research seeks to improve...
Resource Type:: Masters Thesis
Full Text:: silviculture in eastern Oregon. I would also like to thank John Bailey for his counseling and allowing me to

The economic impacts of sagebrush steppe wildfires on an eastern Oregon ranch

Creator:: Maher, Anna T.
Abstract:: The relative success of restoration practices on cheatgrass infested sagebrush steppe lands in the Great Basin can affect the probability of crossing an ecological threshold and have economic effects on cattle ranches using federal rangelands. Cheatgrass invasion implies an increase in the risk of fire, which in turn increases the...
Resource Type:: Masters Thesis
Full Text:: Eastern Oregon Ranch Abstract approved: ___________________________ John A. Tanaka The

Tree Vigor Response and Competitive Zone Density in Mature Ponderosa Pine

Creator:: Shaw, Randi C.
Abstract:: This study explored the relationship of mature ponderosa pine (Pinus ponderosa Dougl. ex Laws) tree vigor and competitive zone density following thinning and fuel reduction treatments. Competitive zone density (CZD) was defined as the total tree basal area (m²/ha) surrounding a given ponderosa pine tree within a 10m fixed radius...
Resource Type:: Masters Thesis
Full Text:: contribution to carbon storage (Franklin et al. 2013). In the dry forests of eastern Oregon, ponderosa pine is

Survival Rates and Cause-Specific Mortality of Mule Deer in South-Central Oregon

Creator:: Mulligan, Elizabeth M.
Abstract:: It is critical for wildlife managers to understand the population dynamics of a harvested species, particularly for ungulates, which are a valuable wildlife resource. Due to concerns that mule deer (Odocoileus hemionus) populations in Oregon were declining, more comprehensive data on population vital rates and the factors potentially affecting them...
Resource Type:: Masters Thesis
Full Text:: implemented a seven year study to investigate habitat use and survival of mule deer in eastern Oregon. From

Remote detection and predicted locations of NIPF fuel treatments in central Oregon

Creator:: Hall, Michael P.
Abstract:: Fire regimes across the western United States have been altered due to past land management and changing land use. Mitigating increased risks of wildfire occurrence in landscapes such as central Oregon requires landscape level management from both governmental and private organizations. Non-industrial private forest (NIPF) owners manage a relatively small...
Resource Type:: Masters Thesis
Full Text:: Treatments in Central Oregon AN ABSTRACT OF THE THESIS OF Michael P. Hall for the degree of

Post-accident radiocesium uptake in eastern Oregon wheat crops : A preliminary estimate using a modified "PATHWAY" model

Creator:: Palotay, Joshua A.
Abstract:: An experimental environmental uptake model was developed for the purpose of estimating the final harvest concentration of contaminant following an acute accidental release of radiocesium onto an eastern Oregon winter wheat crop. The system was developed using the PATHWAY environmental uptake model as presented by Whicker and Kirchner (1987) for...
Resource Type:: Masters Thesis
Full Text:: , 2006. Title: Post-Accident Radiocesium Uptake in Eastern Oregon Wheat Crops: A Preliminary Estimate

The termination of the Basin and Range Province into a clockwise rotating region of transtension and volcanism, central Oregon

Creator:: Trench, David
Abstract:: Normal faults characterizing extensional provinces may terminate along-strike at regions of zero extension, at zones of transform faults, or at triple junctions. Termination of the Basin and Range extensional province in southeastern Oregon is thought to occur by right-lateral transform motion distributed across the Brothers Fault zone (BFZ) in central...
Resource Type:: Masters Thesis
Full Text:: . Lawrence (1976) identified four discrete zones of NW trending faults in eastern Oregon that separate

Estimating a juniper biomass supply from private rangelands : the impact of distance and biotic factors on costs

Creator:: McCaulou, Jeff C.
Abstract:: Central Oregon has attracted attention as a potential location for a biomass industry based on a locally fixed source of western juniper (Juniperus occidentalis Hook) feedstock. This study identifies a supply of juniper from private lands to determine how much of the available juniper is economically supplied at alternative prices...
Resource Type:: Masters Thesis
Full Text:: . Western Juniper acreage has increased by over 700 percent in Eastern Oregon in the past 60 years. The

Effect of plant date on subsequent seedling field performance

Creator:: Taylor, Michael Monroe
Abstract:: Douglas-fir (Psudotsuga menziesii (Mirb.) Franco) seedlings were outplanted on eight dates (every three weeks from mid-August 2005 through mid-January 2006). On each plant date, seedlings from a conventional dormancy (CONV) induction treatment, including moisture and nutrient stress, and a shortened daylength (SD) treatment were outplanted on three western Oregon sites...
Resource Type:: Masters Thesis
Full Text:: Monroe Taylor A THESIS Submitted to Oregon State University in partial fulfillment

Sugar application and nitrogen pools in Wyoming big sagebrush communities and exotic annual grasslands

Creator:: Witwicki, Dana L.
Abstract:: Within A rtemisia tridentata ssp. wyomingensis Nutt. (Wyoming big sagebrush) communities of the Great Basin, lands dominated by the exotic annual grass Bromus tectorum L. (cheatgrass) are increasing at an alarming rate. Carbon applications, which reduce plant-available soil N, have been suggested as a way to give native vegetation a...
Resource Type:: Masters Thesis
Full Text:: pools in each of these communities. Research occurred at six sites in eastern Oregon and southwestern

Microsatellite Marker Development, Characterization and Mapping in European Hazelnut (Corylus avellana L.), and Investigation of Novel Sources of Eastern Filbert Blight Resistance in Corylus

Creator:: Bhattarai, Gehendra
Abstract:: European hazelnut, an important nut crop in Oregon agriculture, is threatened by the fungal disease eastern filbert blight (EFB) caused by Anisogramma anomala (Peck) E. Müller. The hazelnut breeding program at OSU has been working on development of EFB-resistant cultivars. DNA markers allow mapping of traits using segregating progenies and...
Resource Type:: Masters Thesis
Full Text:: hazelnut, an important nut crop in Oregon agriculture, is threatened by the fungal disease eastern

Modeling the Economic Potential of Silvopasture in Eastern North Carolina and Northeastern Oregon and Exploring Eligibility of Silvopasture to Enroll in Carbon Markets in the United States

Creator:: Bruck, Sonia Rose
Abstract:: Silvopasture is the planned and managed agroforestry system in which forage, livestock, and trees or shrubs are integrated in order to enhance individual components. Silvopasture has been identified as the most promising agroforestry system for the Pacific Northwest and Southeast United States. However, there have been few studies describing the...
Resource Type:: Masters Thesis
Full Text:: : Modeling the Economic Potential of Silvopasture in Eastern North Carolina and Northeastern Oregon and

Ascospore viability and dispersal from pruned branches infected with Anisogramma anomala

Creator:: Heckert, Stephanie
Abstract:: Viability and dispersal of ascospores of Anisogramma anomala, the cause of eastern filbert blight (EFB) on European hazelnut, from diseased branches pruned from trees were measured. In each of two years, branches bearing stromata of A. anomala were cut in mid-December and compared to branches cut near budbreak in March,...
Resource Type:: Masters Thesis
Full Text:: eastern filbert blight and spore traps at locations away from those pruned branches at the Oregon

Shrub reestablishment following fire in the mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Beetle) alliance

Creator:: Ziegenhagen, Lori L.
Abstract:: Currently, the of lack information on shrub reestablishment following fire and the wide variability in rates of recovery have lead to uncertainty in using prescribed burning as a management tool in the mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Beetle) alliance. This study examined the recovery of shrub...
Resource Type:: Masters Thesis

Predators of hemlock woolly adelgid in northwestern Oregon

Creator:: Byrkit, Maggie K.
Abstract:: Hemlock woolly adelgid, Adelges tsugae Annand, is a serious threat to eastern hemlock, Tsuga canadensis Carriere, in the eastern United States. Infestations of A. tsugae are spreading rapidly and tree mortality caused by the insect is increasing yearly. As part of an integrated management approach, a classical biological control program...
Resource Type:: Masters Thesis
Full Text:: Woolly Adelgid in Northwestern Oregon. Abstract approved: Darrell W. Ross Hemlock woolly adelgid

New sources and linked AFLP markers for Eastern filbert blight resistance in hazelnut

Creator:: Chen, Honglin
Abstract:: Eastern filbert blight (EFB), caused by Anisogramma anomala (Peck) E. Miiller, is a devastating disease to orchards of the European hazelnut (Corylus avellana L.) in the Willamette Valley, Oregon. Host resistance is the most desirable means of disease control. Fifty-eight hazelnut accessions, including European cultivars and interspecific hybrids were evaluated...
Resource Type:: Masters Thesis
Full Text:: Davison and Davidson (1973). Eastern filbert blight (EFB) has moved southward into Oregon at an average

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