Index Catalog // ScholarsArchive@OSU

The Role of Facilitation for Maintaining Key Processes of Sagebrush-steppe Plant Populations in a Changing Climate

Creator:: Weisgerber, Elizabeth K.
Abstract:: Drought events have been shown to impact species distributions and are predicted to increase in frequency as the climate changes. As this occurs, ecologists predict species distributions will shift dependent upon species ability to track climate. These shifts in species distribution are expected to be particularly acute in arid and...
Resource Type:: Dissertation

Wild Waters : Perspectives on Oregon’s Marine Reserves as Marine Wilderness Areas

Creator:: Johnston, Jennifer R.
Abstract:: Designation of areas as marine wilderness has been proposed as a strategy for managing the increasing threats facing the world’s oceans. Although social factors influence marine protected area success, the human dimensions of marine wilderness remain minimally explored. This thesis examines views of marine wilderness expressed by a representative sample...
Resource Type:: Masters Thesis

A Multi-Spatial Scale Economic Analysis of the Impacts of Bear Damage to Douglas-fir on Private Timberlands in the Pacific Northwest

Creator:: Kline, Kristina N.
Abstract:: Black bears (Ursus americanus) in western Oregon and Washington peel bark from conifers in early spring to forage on the sugar-rich phloem and cambial tissues. This provides important energy at a time when similarly attractive forage is scarce. Bears often damage Douglas-fir (Pseudotsuga menziesii) trees in stands that are intensively...
Resource Type:: Masters Thesis
Full Text:: similarly attractive forage items (Collins et al. 2002). In spring, the phloem may contain up to 3.5

Beaver ecology in Bridge Creek, a tributary to the John Day River

Creator:: Maenhout, Julie L. (Harper)
Abstract:: The American beaver (Castor canadensis) was nearly extirpated by the late 1800's due to the fur trade. Due to reintroduction efforts, it now occupies much of its former range. Beavers are a keystone species and ecosystem engineers, greatly influencing riparian and instream habitats through selective harvesting of plant materials and...
Resource Type:: Masters Thesis
Full Text:: allowing me to work in her genetics lab in Fort Collins. Without her expertise and support, chapter 3

Interactive effects of silvicultural herbicides and cervid herbivory on early seral plant communities of the northern Oregon Coast Range

Creator:: Stokely, Thomas D.
Abstract:: Intensive forest management (IFM, dense conifer plantings and herbicide applications) may alter the characteristics of early seral plant communities that function as major habitat resources for a host of wildlife species, including cervid herbivores such as Cervus elaphus and Odocoileus hemionus. Such large herbivores can also substantially affect plant community...
Resource Type:: Masters Thesis
Full Text:: , Collins et al. 1995). There are many types of disturbances with varying intensities, durations

Competition release and climate change effects on a moisture-demanding tree species in a dry system

Creator:: Seager, S. Trent
Abstract:: Climate change and the increase in meteorological drought have generated global concern over the persistence of ecosystems already in decline from decreased moisture. Evidence suggests dryland ecosystems have been more impacted by drought because of their tightly coupled growth-water relationships and high sensitivity to environmental shift. Removal of competing vegetation...
Resource Type:: Dissertation
Full Text:: Crescent Ranger District (DNF), and Travis Erickson, Collins Timber Company and Collins Lakeview Forest

Drivers and Impacts of a Recent Annual Grass Invasion: Ventenata dubia and Fire in the Inland Northwest

Creator:: Tortorelli, Claire M.
Abstract:: Biological invasions threaten native biodiversity, alter ecosystem function, and are a major cause of economic losses across the planet. The most impactful invaders alter disturbance regimes and initiate state shifts to outside the historical range of variability of the ecosystem. Concern for ecological and economic losses has prompted a rapid...
Resource Type:: Dissertation

Does the Matrix Matter? Using Radio Frequency Identification (RFID) Technology to Examine Hummingbird Movements in Fragmented Tropical Landscapes

Creator:: Jackson, Evan R.
Abstract:: There is increasing evidence that the type of land cover surrounding remnant patches of native habitats (the ‘matrix’) can modify effects of landscape change on biodiversity; thus the traditional idea of dichotomous habitat and non-habitat following island biogeography theory is insufficient in complex landscapes. Matrix type can have dramatic influences...
Resource Type:: Masters Thesis
Full Text:: , particularly Jenna Curtis, Tyler Hallman, and Jessica Castillo, have been wonderful companions along the way

Social Acceptance of Landscape-Scale Restoration : Treatment of Riparian Areas in the Lower Joseph Creek Watershed, Oregon.

Creator:: Kohler, Gabriel E.
Abstract:: Managing riparian areas in the dry forests of the intermountain west for diverse public values can create conflict, potentially limiting social acceptance in landscape-scale restoration projects. This thesis examined accelerated landscape-scale restoration as part of a broader shift toward ecosystem management on national forestland, which incorporates social values into forest...
Resource Type:: Masters Thesis
Full Text:: al. 2002; Monroe et al. 2003; McCaffrey 2004; Collins 2005; Nelson et al. 2005; Brenkert-Smith

Fish out of Water: Virgin Spinedace (Lepidomeda mollispinis) in the Santa Clara River, Utah

Creator:: Siefken, Sarah N.
Abstract:: River ecosystems throughout the arid southwestern U.S. are imperiled. Water management infrastructure, climate change, unsustainable water use, and political conflict harm the region's aquatic and riparian ecosystems. This case study surveys one such desert river, an endemic fish species, and conservation efforts in southwestern Utah. The analysis focuses on the...
Resource Type:: Capstone Project
Full Text:: reaches, leading to a loss of ecological complexity and biodiversity (Allan and Castillo 2007; Poff et

ScholarsArchive@OSU

The Role of Facilitation for Maintaining Key Processes of Sagebrush-steppe Plant Populations in a Changing Climate

Wild Waters : Perspectives on Oregon’s Marine Reserves as Marine Wilderness Areas

A Multi-Spatial Scale Economic Analysis of the Impacts of Bear Damage to Douglas-fir on Private Timberlands in the Pacific Northwest

Beaver ecology in Bridge Creek, a tributary to the John Day River

Interactive effects of silvicultural herbicides and cervid herbivory on early seral plant communities of the northern Oregon Coast Range

Competition release and climate change effects on a moisture-demanding tree species in a dry system

Drivers and Impacts of a Recent Annual Grass Invasion: Ventenata dubia and Fire in the Inland Northwest

Does the Matrix Matter? Using Radio Frequency Identification (RFID) Technology to Examine Hummingbird Movements in Fragmented Tropical Landscapes

Social Acceptance of Landscape-Scale Restoration : Treatment of Riparian Areas in the Lower Joseph Creek Watershed, Oregon.

Fish out of Water: Virgin Spinedace (Lepidomeda mollispinis) in the Santa Clara River, Utah

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