Index Catalog // ScholarsArchive@OSU

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:: AN ABSTRACT OF THE DISSERTATION OF Thomas N. Kaye for the

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Creator:: Kral, George L.
Abstract:: The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Resource Type:: Dissertation
Full Text:: – original draft, Writing – review & editing. Elena N. Dupen: Writing – review and editing, Visualization

Ecophysiology of the cyanolichen Lobaria oregana

Creator:: Antoine, Marie E.
Abstract:: This thesis consists of three manuscripts describing ecophysiological research on the cyanolichen Lobaria oregana. The first manuscript includes a re-evaluation of the assumptions underlying past estimates of N fixation by this species and provides an estimate of annual N fixation at the Wind River Canopy Crane (WRCC). Based upon litterfall...
Resource Type:: Masters Thesis
Full Text:: -evaluation of the assumptions underlying past estimates of N fixation by this species and provides an

Environmental Factors Affecting Phytophthora Root Rot of Rhododendron

Creator:: Mestas, Angie
Abstract:: Phytophthora root rot decreases availability and quality of rhododendrons produced in the USA. Symptoms of Phytophthora root rot include root necrosis, leaf chlorosis, stunting, and permanent wilt. The purpose of this thesis was to better understand the impact of root damage, soil moisture, nitrogen fertilizer application, and pathogen species on...
Resource Type:: Masters Thesis
Full Text:: impact of increasing N fertilizer rate on the progression and severity of Phytophthora root rot of

New Tools for Managing Erysiphe necator: Rapid Sampling Approaches and an Exploration of Grower Opinions and Perspectives towards Collective Action and Information Transfer

Creator:: Lowder, Sarah R.
Abstract:: The scale of pest and disease dispersal is often larger than the scale of individual farms. Therefore, an individual grower’s response to pests and diseases can affect and is affected by their surrounding growing region. Individual growers are also not isolated, and engage in various forms of information gathering, sharing,...
Resource Type:: Dissertation
Full Text:: samples with molecular confirmation (leaf swabs; n=915) and rotating arm impaction traps (impaction

Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

Creator:: McNeil, Robert Curlan
Resource Type:: Masters Thesis
Full Text:: concentration of N in the remaining litter and soil is higher than before the burn (Knight 1966), but not

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Creator:: Keon, Dylan B.
Abstract:: The sensitive lichen Usnea longissima Ach., formerly a fairly common circumboreal species, has been extirpated from much of its range (e.g., Eastern Europe). Although the U.S. Pacific Northwest (PNW) remains a relative stronghold for the species, U longissima faces increasing pressure in the region from habitat loss, air pollution, and...
Resource Type:: Masters Thesis
Full Text:: /ongissima was present (n=75) and absent (n=75) to determine habitat associations for the species. In

Characteristics of soil organic matter in two forest soils

Creator:: Crow, Susan E.
Abstract:: Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon (C) and is an integral part of C cycling globally. Soil organic matter composition typically can be traced directly back to the type of detrital inputs; however, the stabilization of SOM results as a combination of chemical...
Resource Type:: Dissertation
Full Text:: effects of altering detrital inputs (above- vs. below- ground source, C and nitrogen (N) quantity, and

Growth of Aphanizomenon flos-aquae in defined media

Creator:: O'Flaherty, Larrance Michael Arthur, 1941-
Abstract:: A strain of Aphanizomenon flos-aquae Born. et Flah. has been introduced into culture and maintained since August of 1964 in completely defined media. It exhibits the planktonic, colonial flake form found in nature, and both heterocysts and akinetes are present. The color and size of the flake and general appearance...
Resource Type:: Dissertation
Full Text:: . 0056 N sodium thio- sulfate solution was added to the hypochlorite solution to neutralize the

The ecology of lupines in Crater Lake National Park, Oregon

Creator:: Kerle, Elizabeth A.
Resource Type:: Masters Thesis
Full Text:: were low in N (<0.09%). Total carbon in the rooting zone varied from 1.35% to 3.83%. Rooting zone C:N

ScholarsArchive@OSU

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

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Ecophysiology of the cyanolichen Lobaria oregana

Environmental Factors Affecting Phytophthora Root Rot of Rhododendron

New Tools for Managing Erysiphe necator: Rapid Sampling Approaches and an Exploration of Grower Opinions and Perspectives towards Collective Action and Information Transfer

Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Characteristics of soil organic matter in two forest soils

Growth of Aphanizomenon flos-aquae in defined media

The ecology of lupines in Crater Lake National Park, Oregon

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