Index Catalog // ScholarsArchive@OSU

Bird communities in commercially thinned and unthinned Douglas-fir stands in western Oregon

Creator:: Hagar, Joan C.
Abstract:: I studied species' abundances and habitat relationships of breeding and winter birds in commercially thinned and unthinned Douglas-fir (Pseudotsuga menziesii) stands from May 1989 to June 1991. The study was conducted in 40- to 55-year old stands in the Central Oregon Coast Ranges and the Tillamook State Forest. Total abundance...
Resource Type:: Masters Thesis

Functional relationships among songbirds, arthropods, and understory vegetation in Douglas-fir forests, western Oregon

Creator:: Hagar, Joan C.
Abstract:: Arthropods are important food resources for birds. Forest management activities can influence shrub-dwelling arthropods by affecting the structure and composition of understory shrub communities. Changes in abundance and species composition of arthropod communities in turn may influence the distribution and abundance of insectivorous birds. I examined relationships among bird abundance,...
Resource Type:: Dissertation

Pacific marten occupancy and detection probability in relation to infrastructure and environmental factors in the southern Cascade Mountains

Creator:: Hill, Deborah J.
Abstract:: Humans benefit from being in nature and recreating, however outdoor recreation can negatively impact wildlife, including species of conservation concern such as the Pacific marten (Martes caurina). Densities of martens decline following intensive forest management activities, but impacts from recreation are relatively unstudied. My goal was to evaluate marten occupancy...
Resource Type:: Capstone Project
Full Text:: committee for their guidance, support, and access to this project. Dr. Joan Hagar kept me on track to

The Use of Effectiveness Monitoring and Reporting for Fish and Wildlife Habitat Restoration Within the Collaborative Forest Landscape Restoration Program 2010-2018

Creator:: Kitayama, Eileen K.
Abstract:: The Collaborative Forest Landscape Restoration Program (CFLRP) is a collection of large-scale restoration projects across the United States that are striving to improve many economic, social, and ecological sustainability issues, including the condition of fish and wildlife habitat. Effectiveness monitoring is a specific type of monitoring that is critically important...
Resource Type:: Capstone Project
Full Text:: and how prior year evaluations have contributed to improved project performance, (C) a description

Determining strategies for the protection of nesting Interior Least Terns (Sternula antillarum athalassos) in Indiana

Creator:: Espick, Lainey
Abstract:: Interior least tern (Sternula antillarum athalassos) populations and productivity have been declining in Indiana for the past ten years, which is thought to be the result of predation. Methods for protecting nesting Interior least terns include fence exclosures and artificial shelters for chicks, but their effectiveness is unknown. Each Indiana...
Resource Type:: Capstone Project
Full Text:: my advisor, Dr. Joan Hagar, for taking a chance on me and providing me with excellent feedback

Habitat Associations and Diet Composition of Western Purple Martins in Western Oregon

Creator:: Sherman, Lorelle M.
Abstract:: The western purple martin (Progne subis arboricola) is a species of conservation concern throughout the Pacific Northwest. In western Oregon, the purple martin nests in three major ecosystem types: inland open-water, coastal, and upland forest. The availability of suitable breeding habitat is a major limiting factor for western purple martin...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: _____________________________________________________ Joan Hagar The western

An Observational Study of the Effects of Wildfire on Hermit and Varied Thrush Distribution in the Mt. Washington Wilderness Area

Creator:: Woodrich, Samuel T.
Abstract:: The hermit thrush (Catharus guttatus) and the varied thrush (Ixoreus naevius) are focal species for conservation of forested habitats in Oregon. Although habitat associations have been defined for both species, their response to changes in vegetation following wildfire has not been well studied. To help fill this information gap, I...
Resource Type:: Masters Thesis

Bird Abundance and Microhabitat Associations with Oak Mistletoe in Willamette Valley Oak Woodlands

Creator:: Pritchard, Kyle R.
Abstract:: In the last 200 years there have been significant declines in the amount and structural complexity of oak-dominated forests and savannahs in the Pacific Northwest. Restoring oak systems often involves selectively thinning stands of oaks in order to reduce competition for sunlight. In choosing which trees to cut, land managers...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ David C. Shaw Joan C. Hagar In the last 200 years there have been significant

Population Ecology of the Mariana Swiftlet (Aerodramus bartschi) on O'ahu, Hawaiian Islands

Creator:: Johnson, Nathan Christopher
Abstract:: The Mariana Swiftlet (Aerodramus bartschi) (Aves: Apodidae) is endemic to the Mariana Islands, where it currently occurs on Saipan, Aguiguan, and Guam. An introduced population of Mariana Swiftlets is also present on O'ahu in the Hawaiian Islands. Sparing interference with the endangered population in the Marianas, the introduced, surrogate population...
Resource Type:: Masters Thesis
Full Text:: guidance she provided. I also thank my committee members Dr. Douglas Robinson and Dr. Joan Hagar for

Bird-vegetation relationships across ten years after thinning in young thinned and unthinned Douglas-fir forests

Creator:: Yegorova, Svetlana
Abstract:: Bird-vegetation associations are a base for bird conservation and management, as well as for predictions of the effects of resource management and climate change on wildlife populations. A recent shift in forest management priorities from timber production to native species' habitat conservation on federal lands has emphasized the need to...
Resource Type:: Masters Thesis
Full Text:: Puettmann, Joan Hagar and Matt Betts for their guidance. I am grateful to Dr. Lisa Ganio for statistical

ScholarsArchive@OSU

Bird communities in commercially thinned and unthinned Douglas-fir stands in western Oregon

Functional relationships among songbirds, arthropods, and understory vegetation in Douglas-fir forests, western Oregon

Pacific marten occupancy and detection probability in relation to infrastructure and environmental factors in the southern Cascade Mountains

The Use of Effectiveness Monitoring and Reporting for Fish and Wildlife Habitat Restoration Within the Collaborative Forest Landscape Restoration Program 2010-2018

Determining strategies for the protection of nesting Interior Least Terns (Sternula antillarum athalassos) in Indiana

Habitat Associations and Diet Composition of Western Purple Martins in Western Oregon

An Observational Study of the Effects of Wildfire on Hermit and Varied Thrush Distribution in the Mt. Washington Wilderness Area

Bird Abundance and Microhabitat Associations with Oak Mistletoe in Willamette Valley Oak Woodlands

Population Ecology of the Mariana Swiftlet (Aerodramus bartschi) on O'ahu, Hawaiian Islands

Bird-vegetation relationships across ten years after thinning in young thinned and unthinned Douglas-fir forests

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