Index Catalog // ScholarsArchive@OSU

Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

Creator:: Krissman, Cortnie M.
Abstract:: North American sagebrush (Artemisia spp.) ecosystems are suffering from reductions in habitat extent and quality. Only about 50% of sagebrush remains from pre-settlement conditions, and much of the remaining habitat is fragmented or degraded by invasive species, fire suppression and overgrazing. Sagebrush-obligate species are experiencing population declines as a result...
Resource Type:: Masters Thesis
Full Text:: Cortnie M. Krissman for the degree of Master of Science in Wildlife Science presented on December 15

Influence of vegetation structure and food habits on effects of guthion 2S® (Azinphos-methyl) on small mammals

Creator:: Schauber, Eric M.
Abstract:: The Quotient Method (QM), a laboratory-based risk assessment methodology used by the Environmental Protection Agency to evaluate pesticides for registration and use, has not been thoroughly field-tested and its performance has not always been reliable. My objective was to determine if variation in vegetation structure or diet of exposed animals...
Resource Type:: Masters Thesis
Full Text:: of guthion 2S® (Azinphos-methyl) on small mammals AN ABSTRACT OF THE THESIS OF Eric M. Schauber

Habitat selection by sage grouse hens during the breeding season in south-central Washington

Creator:: Sveum, Colin M.
Resource Type:: Masters Thesis
Full Text:: season in south-central Washington AN ABSTRACT OF THE THESIS OF Colin M. Sveum for the degree of

Breeding bird community composition in relation to riparian vegetation structure in grazed habitats

Creator:: Sanders, Todd Alan
Abstract:: Riparian zones provide habitat for breeding birds in the semiarid western United States; however, there are few data available that address the effects of livestock grazing strategies on riparian habitats and avian communities. Documenting avian community composition in different riparian vegetation communities and relating vegetation communities to livestock grazing strategies...
Resource Type:: Masters Thesis
Full Text:: cover overall (P < 0.001) and within each 1-m height interval from 0-4 m (P < 0.013) than the

Over-winter demography of the gray-tailed vole (Microtus canicaudus) in fragmented and continuous habitats

Creator:: Brunkal, Heidi L.
Abstract:: Large scale disruption of natural habitats worldwide has led to concern over the effects of habitat fragmentation on wildlife populations. Small scale experiments may be a useful tool for discovering effects of fragmentation over larger landscape scales. I sought to explore the potential for using voles as an experimental model...
Resource Type:: Masters Thesis
Full Text:: . Daniel E Large scale disruption of natural habitats worldwide has led to concern over the effects of

Factors affecting habitat use by black-tailed deer and Roosevelt elk in the Silver Burn, Southwestern Oregon

Creator:: Michalski, Bret L.
Abstract:: A wildfire burned over 40,000 ha of conifer and mixed conifer-hardwood forest in the Silver Creek drainage of southwestern Oregon in the fall of 1987 allowing me to assess big game use of a large natural burn. I used fecal pellet group counts to estimate habitat use and effects of...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: W. Daniel Edge A wildfire burned over 40,000 ha of conifer and mixed conifer

Conservation and spatial use analyses for the recovery of bighorn sheep in the Peninsular Ranges

Creator:: Ostermann, Stacey D.
Abstract:: The status of wild sheep in North America typifies the plight of many wildlife species in modern times: wild sheep have declined to 10-40% of their numbers during pristine times and on a global scale approximately 31% of Caprine are considered threatened or critical. As human populations and the number...
Resource Type:: Masters Thesis
Full Text:: -m buffer. The response variable was use (0 random points, I = bighorn sheep locations

Validating songbird habitat relationship models

Creator:: Wilson, Dorothy G.
Abstract:: Models are commonly used to assess and predict wildlife response to management practices. Model validation is essential if managers are to use them with confidence. Fifteen forest bird-habitat relationship models were developed by biologists using data collected from private forestland in southwest Washington. These models predict species' probability of occurring...
Resource Type:: Masters Thesis
Full Text:: Songbird Habitat Relationship Models. Abstract approved: W. Daniel Edgt, Models are commonly used to

Riparian vegetation and larval Pacific Giant (Dicamptodon tenebrosus) and adult Western Redback (Plethodon vehiculum) salamanders in the Oregon Coast Range

Creator:: Graff, Paula (Paula Hayes)
Abstract:: Riparian areas in the Pacific Northwest provide important biotic and abiotic features, such as down wood, moist microsites, and abundant invertebrate prey that benefit aquatic and terrestrial amphibians. Reported high densities of amphibians from streams and riparian areas in the Pacific Northwest highlight their importance in riparian food webs. Amphibians...
Resource Type:: Masters Thesis
Full Text:: W. Daniel Edge Riparian areas in the Pacific Northwest provide important biotic and

Butterfly and flower community composition among prairie-oak ecosystem habitats in the Willamette Valley, Oregon

Creator:: Powers, Breanna F.
Abstract:: Prairie-oak ecosystems in the Willamette Valley, Oregon have experienced habitat loss and degradation; most of these ecosystems are fragmented into smaller patches. Prairie-oak butterfly species, in the Willamette Valley, have decreased dramatically due to loss or degradation of habitat. More research is needed on sustaining the populations of butterflies in...
Resource Type:: Masters Thesis
Full Text:: , Oregon Abstract approved: ______________________________________________________ W. Daniel

ScholarsArchive@OSU

Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

Influence of vegetation structure and food habits on effects of guthion 2S® (Azinphos-methyl) on small mammals

Habitat selection by sage grouse hens during the breeding season in south-central Washington

Breeding bird community composition in relation to riparian vegetation structure in grazed habitats

Over-winter demography of the gray-tailed vole (Microtus canicaudus) in fragmented and continuous habitats

Factors affecting habitat use by black-tailed deer and Roosevelt elk in the Silver Burn, Southwestern Oregon

Conservation and spatial use analyses for the recovery of bighorn sheep in the Peninsular Ranges

Validating songbird habitat relationship models

Riparian vegetation and larval Pacific Giant (Dicamptodon tenebrosus) and adult Western Redback (Plethodon vehiculum) salamanders in the Oregon Coast Range

Butterfly and flower community composition among prairie-oak ecosystem habitats in the Willamette Valley, Oregon

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