Index Catalog // ScholarsArchive@OSU

Demography and habitat selection of northern spotted owls in post-fire landscapes of southwestern Oregon

Creator:: Clark, Darren A.
Abstract:: Several large wildfires in southwestern Oregon during the summers of 2001 and 2002 provided the opportunity to investigate the impacts of wildfire on northern spotted owls (Strix occidentalis caurina). I used radio-telemetry and demographic surveys to describe demographic performance and habitat selection of spotted owls in the areas burned by...
Resource Type:: Masters Thesis
Full Text:: ). Demographic surveys were used to determine the number of young fledged per pair of spotted owls. I found no

Ecology of breeding burrowing owls in the Columbia Basin, Oregon

Creator:: Green, Gregory A.
Resource Type:: Masters Thesis
Full Text:: . I thank the U.S. Navy, U.S. Army, Hat Rock State Park, Portland General Electric, Eastern Oregon

Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

Creator:: Rearden, Spencer N.
Abstract:: With declining populations and low calf recruitment in northeastern Oregon, much interest has been generated to study the survival rates and causes of mortality of Rocky Mountain elk (Cervus elaphus nelsoni). I investigated the causes of elk calf mortality and the effects of predation risk on birth-site selection by cow...
Resource Type:: Masters Thesis
Full Text:: et al. 1992, Cameron et al. 1993, Cook et al. 2004). Physical condition of young at the time of

Roosevelt elk habitat use in the Oregon Coast Range

Creator:: Pope, Michael D. (Michael Dickens)
Abstract:: Few studies have evaluated non-migratory Roosevelt elk (Cervus elaphus roosevelti) interactions and habitat use on lands undergoing extensive timber removal. We captured and radio-tracked for 14 months representatives from 29 different bands of elk across a 37,000 ha area of Oregon's Coast Range. We identified 6 habitat variables within individual...
Resource Type:: Masters Thesis
Full Text:: caring for young" (Burt 1943:351). White and Garrott (1990:145) suggest that the key word in the above

Human-eagle interactions on the lower Columbia River

Creator:: McGarigal, Kevin
Abstract:: During the past decade (1978-87), breeding success and productivity of bald eagles on the lower Columbia River (LCR) has been far below state and regional averages and well below levels required for delisting under the Endangered Species Act by the Pacific States Bald Eagle Recovery Plan. Human disturbance was suspected...
Resource Type:: Masters Thesis
Full Text:: INTRocucriau Productivity measures (e.g. number of young per occupied site) have been used by resource

Influence of limited access roads on Roosevelt elk in the Oregon Coast Range

Creator:: Cole, Eric K.
Abstract:: No studies have evaluated the effects of limited vehicle access on movements, survival and habitat use of Roosevelt elk (Cervus elaphus roosevelti) . We installed twenty gates, restricting motorized vehicle access by the public in seven discrete Road Management Areas (RMAs), comprising 35% of the study area. We radio-tracked 31...
Resource Type:: Masters Thesis
Full Text:: , bigleaf maple and myrtle (Umbellularia califomica). Understory vegetation is sparse in young Douglas-fir

Dispersal patterns of Washington ground squirrels in Oregon

Creator:: Klein, Kimberly J.
Resource Type:: Masters Thesis
Full Text:: biodiversity and habitat heterogeneity (Young et al. 1976, Eissenstat and Caldwell 1988, Melgoza and Nowak

Abundance and habitat associations of Washington ground squirrels in north-central Oregon

Creator:: Greene, Eric
Abstract:: Much of the Columbia River Basin has been cultivated for agriculture, which has reduced and fragmented the native shrub-steppe habitats. As a result, the range of the Washington ground squirrel (Spermophilus washingtoni) has been significantly reduced, prompting the states of Washington and Oregon to review their status. Consequently, I investigated...
Resource Type:: Masters Thesis
Full Text:: trapped (March 28 - April 8) before most juvenile emergence had occurred. The earliest young of the year

Disturbance and roosting ecology of California brown pelicans (Pelecanus occidentalis californicus) on East Sand Island in the Columbia River Estuary

Creator:: Wright, Sadie K.
Abstract:: The California brown pelican (Pelecanus occidentalis californicus) is listed as an endangered species under the U.S. Endangered Species Act. The Recovery Plan for this subspecies outlines the need to "Assure long-term protection of adequate food supplies and essential. . .roosting. . . habitat throughout the range." I investigated the effects...
Resource Type:: Masters Thesis
Full Text:: fledged one young apiece (Risebrough Ct al. 1971). DDT input into the Pacific Ocean (via wastewater

Relative abundance and habitat associations of small mammals in two forest types in southern Oregon

Creator:: Johnston, Aaron N.
Abstract:: I studied small-mammal communities and their response to grazing in mixed-conifer forests and oak woodlands in the Cascade-Siskiyou National Monument in southern Oregon. My objectives were to (1) compare small-mammal communities among forest types and grazing intensities, (2) identify riparian affiliated species, and (3) describe microhabitat associations. Over two years,...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Demography and habitat selection of northern spotted owls in post-fire landscapes of southwestern Oregon

Ecology of breeding burrowing owls in the Columbia Basin, Oregon

Juvenile survival and birth-site selection of Rocky Mountain elk in northeastern Oregon

Roosevelt elk habitat use in the Oregon Coast Range

Human-eagle interactions on the lower Columbia River

Influence of limited access roads on Roosevelt elk in the Oregon Coast Range

Dispersal patterns of Washington ground squirrels in Oregon

Abundance and habitat associations of Washington ground squirrels in north-central Oregon

Disturbance and roosting ecology of California brown pelicans (Pelecanus occidentalis californicus) on East Sand Island in the Columbia River Estuary

Relative abundance and habitat associations of small mammals in two forest types in southern Oregon

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