Index Catalog // ScholarsArchive@OSU

Stand structures of Oregon white oak (Quercus garryana) woodlands and their relationships to the environment in southwestern Oregon

Creator:: Gilligan, Laurie A.
Abstract:: Large areas of non-coniferous communities in southwestern Oregon are thinned to reduce fire hazard and accomplish ecosystem restoration, under the assumption that current fuel loads are unnaturally high. Although Oregon white oak (Quercus garryana) woodlands are a characteristic landscape component in this region, little is known about their current or...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Laurie A. Gilligan for the degree of Master of Science in Botany and Plant

Relationships of exotic species and wildfire to the threatened plant Silene spaldingii

Creator:: Menke, Carolyn A.
Abstract:: In the canyon grasslands of Garden Creek Ranch Preserve in Idaho, where the threatened plant Silene spaldingii occurs and invasion by the exotic species Centaurea solstitialis and Bromus tectorum is proceeding rapidly, I examined environmental and community patterns of site invasion, and evaluated the apparent influence of invasion on Silene...
Resource Type:: Masters Thesis
Full Text:: the grassland habitat of the threatened plant Silene spaldingii Carolyn A. Menke and Patricia S

Impacts of fuel reduction thinning treatments on oak and chaparral communities of southwestern Oregon

Creator:: Perchemlides, Keith A.
Abstract:: In response to concerns about excessive stand densities and high-severity wildfires, land managers in the western United States are carrying out extensive programs of fuel reduction thinning. How will these sudden reductions in canopy cover and associated changes in habitat affect native and exotic herbaceous vegetation and canopy species regeneration?...
Resource Type:: Masters Thesis

West Eugene Native Wetland Restoration Research Project: Seed Dormancy, Germination, and Establishment

Creator:: Wilson, Mark V., Ingersoll, Cheryl A., and Clark, Deborah Louise, 1950-
Abstract:: Seed size, abundance, viability, dormancy, and germination requirements strongly influence plant establishment and therefore are important considerations in restoration of native vegetation. These characteristics provide criteria for selection of suitable species, development of collection and pretreatment methods, and determination of seeding densities. The first set of objectives of this study...
Resource Type:: Technical Report
Full Text:: ir ec tl y m ea su re d se ed ch ar ac te ri st ic s fo r th a t sp ec ie s. S p e c

Sulfation of fucoidin in Fucus zygotes : intermediates of sulfate transfer

Creator:: Peterman, Jeffrey J.
Resource Type:: Masters Thesis
Full Text:: 5 0 12 NMI PAPS S 1 1---I 4 ( A 0 5 10 2I5 30 35 DISTANCE FROM ORIGIN (cm.) Figure 2. HVPE

Yield responses of invasive grasses to carbon doses

Creator:: Brunson, Jessi L.
Abstract:: The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
Resource Type:: Masters Thesis
Full Text:: : David A. Pyke Patricia S. Muir The sagebrush steppe ecosystem of the northern Great Basin is

Litter decay processes and soil nitrogen availability in native and cheatgrass-dominated arid rangelands

Creator:: Harrison, Kristen S.
Abstract:: As large-scale restorations of degraded rangelands are initiated, land managers need to understand how decades of dominance by the invasive annual grass, cheatgrass (Bromus tectorum L.), have altered ecosystem processes. One way to assess such alterations is by observing differences in decay rates, since decomposition is determined by factors such...
Resource Type:: Masters Thesis
Full Text:: Soil Nitrogen Availability m Native and Cheatgrass-dominated Arid Rangelands by Kristen S. Harrison A

Seed and seedling ecology of Artemisia tridentata in a restoration context

Creator:: Wijayratne, Upekala C.
Abstract:: The semi-arid sagebrush steppe ecosystem is one of the largest biomes in North America. The steppe provides critical habitat and forage for wildlife and is economically important to recreation and livestock industries. However, the ecosystem is threatened primarily due to several negative effects associated with expansion of the exotic annual...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ David A. Pyke Patricia S. Muir The semi-arid sagebrush steppe ecosystem is one of

Population viability analysis of endangered plant species : an evaluation of stochastic methods and an application to a rare prairie plant

Creator:: Kaye, Thomas N.
Abstract:: Transition matrix models are one of the most widely used tools for assessing population viability. The technique allows inclusion of environmental variability, thereby permitting estimation of probabilistic events, such as extinction. However, few studies use the technique to compare the effects of management treatments on population viability, and fewer still...
Resource Type:: Dissertation
Full Text:: Rare Prairie Plant. Abstract Abstract approved: David A Patricia S. Muir Transition matrix models

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Creator:: Perkins, Lora B.
Abstract:: There is growing interest in using nutrient manipulations to control invasive plants such as Brornus lectorurn L. (cheatgrass). Both labile (sucrose) and recalcitrant (straw and sawdust) carbon sources are added to the soil surface to reduce plant available soil N via soil microbial immobilization. However, the application rates used in...
Resource Type:: Masters Thesis
Full Text:: . Wardell. 2000. Immobilization of soil nitrogen a s a possible method for the restoration of sandy

ScholarsArchive@OSU

Stand structures of Oregon white oak (Quercus garryana) woodlands and their relationships to the environment in southwestern Oregon

Relationships of exotic species and wildfire to the threatened plant Silene spaldingii

Impacts of fuel reduction thinning treatments on oak and chaparral communities of southwestern Oregon

West Eugene Native Wetland Restoration Research Project: Seed Dormancy, Germination, and Establishment

Sulfation of fucoidin in Fucus zygotes : intermediates of sulfate transfer

Yield responses of invasive grasses to carbon doses

Litter decay processes and soil nitrogen availability in native and cheatgrass-dominated arid rangelands

Seed and seedling ecology of Artemisia tridentata in a restoration context

Population viability analysis of endangered plant species : an evaluation of stochastic methods and an application to a rare prairie plant

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

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