Index Catalog // ScholarsArchive@OSU

Conservation biology of Plagiobothrys hirtus (Boraginaceae) : evaluation of life history and population enhancement

Creator:: Amsberry, Kelly
Abstract:: Plagiobothrys hirtus (Boraginaceae) is a state and federally listed endangered plant found only in Douglas County, Oregon. This vernal pool endemic has historically been threatened by agricultural conversion of seasonal wetlands in the Sutherlin area, and is currently being eradicated as habitat is lost due to the rapid urban development...
Resource Type:: Masters Thesis
Full Text:: found only in Douglas County, Oregon. This vernal pool endemic has historically been threatened by

Movements, habitat associations, and survival of Columbian white-tailed deer in western Oregon

Creator:: Ricca, Mark A.
Abstract:: Columbian white-tailed deer (Odocoileus virginianus leucurus, CWTD) are a geographically isolated and federally endangered sub-species for which there is a paucity of recent ecological information. I described and examined sources of variation in spatial use patterns (i.e. home range, areas of concentrated use, and movements), habitat associations, and survival for...
Resource Type:: Masters Thesis

Future climate projections. Douglas County : May 2023

Creator:: Dalton, Meghan, Fleishman, Erica, Bachelet, Dominique, and Rupp, David
Abstract:: In this report, we present climate projections for Douglas County that are relevant to specified natural hazards for the 2020s (2010–2039) and 2050s (2040–2069) relative to the 1971–2000 historical baseline. The projections are based on multiple global climate models for both a lower greenhouse gas emissions scenario (RCP 4.5) and...
Resource Type:: Technical Report
Full Text:: Projections Douglas County, Oregon May 2023 Oregon Climate Change Research Institute

Ecological relationships between Columbian white-tailed and black-tailed deer in southwest Oregon

Creator:: Whitney, Lowell W.
Abstract:: I examined ecological relationships and mechanisms of coexistence for sympatric populations of Columbian white-tailed (Odocoileus virginianus leucurus) and black-tailed deer (Odocoileus hemionus columbianus) in Douglas County, Oregon, from September 1997 to August 1998. Horseback transects were used to describe spatial distributions, population overlap, and habitat use for both species. Behavioral...
Resource Type:: Masters Thesis

Daily activity patterns, survival, and movements of red tree voles (Arborimus longicaudus) in western Oregon

Creator:: Swingle, James Kerr
Abstract:: We radiocollared a sample of 61 red tree voles in Douglas County, Oregon and monitored their movements to determine daily, seasonal, and sexual differences in behavior and home range attributes. We also collected information on nest attributes, survival, and dispersal of the radiocollared voles. Individual voles were monitored for periods...
Resource Type:: Masters Thesis
Full Text:: Oregon. Eric D. Forsman We radiocollared a sample of 61 red tree voles in Douglas County, Oregon and

Historic Survival Rates and Cause-Specific Mortality for Columbian Black-Tailed Deer in Southwest Oregon

Creator:: Groot, Kevyn A.
Abstract:: In contrast with other Odocoileus species, Columbian black-tailed deer (Odocoileus hemionus columbianus) population dynamics are not well understood throughout the species’ range. Concerns over apparent long-term population declines have prompted efforts to fill basic knowledge gaps including estimates of vital rates (fecundity, recruitment and survival) and cause-specific mortality. The Oregon...
Resource Type:: Masters Thesis
Full Text:: Columbian Black-Tailed Deer in Southwest Oregon AN ABSTRACT OF THE THESIS OF Kevyn A

Comparison of methods to estimate population density of Pacific giant salamanders in small streams of the southern Oregon Cascades

Creator:: Leuthold, Niels C.
Abstract:: I compared hand sampling, two-pass multiple removal sampling, mark-recapture and catchability-based population estimates for the Pacific giant salamander (Dicamptodon tenebrosus) at 22 sites in 11 streams of Cascade Mountains of Oregon. Mark-recapture and catchability-based population estimates were not significantly different (p 0.86). Hand sampling and two-pass multiple removal population estimates...
Resource Type:: Masters Thesis
Full Text:: Oregon Cascades. Abstract approved: Stanley V. Gregory I compared hand sampling, two-pass multiple

Basin-scale variation in the spatial pattern of fall movement of juvenile coho salmon in the West Fork Smith River, Oregon

Creator:: Hance, Dalton J.
Abstract:: from the summer dry season to the winter wet season. Such movement that connects summer and winter habitats may be particularly important for coho salmon, O. kisutch, because availability of overwintering habitat can limit freshwater survival for this species. Here, I describe basin-scale variability in the spatial pattern of fall...
Resource Type:: Masters Thesis
Full Text:: West Fork Smith River, Oregon Abstract approved:_____________________________________________________

Factors influencing within-watershed genetic variation of coastal cutthroat trout in Camp Creek, Oregon

Creator:: Wofford, John E.B.
Abstract:: Because human land use activities often result in increased fragmentation of headwater stream habitats, a better understanding of the effects of fragmentation on the genetic heterogeneity of stream salmonids is useful for effective management. We used eight microsatellites to examine the genetic structure of potamodromous coastal cutthroat trout (Oncorhynchus clarki...
Resource Type:: Masters Thesis
Full Text:: Influencing Within-Watershed Genetic Variation of Coastal Cutthroat Trout in Camp Creek, Oregon. Abstract

A guide to riparian tree planting in southwest Oregon

Creator:: Oregon State University. Extension Service, Bennett, Max, 1963-, and Ahrens, Glenn R.
Abstract:: Planting trees in riparian areas is increasingly common in Oregon as part of efforts to improve fish habitat, water quality, and other riparian functions. Yet tree survival and growth are poor in many projects, and some fail outright.
Resource Type:: Technical Report
Full Text:: and Josephine counties, and Glenn Ahrens, Extension forester, Clatsop County; both of Oregon State

ScholarsArchive@OSU

Conservation biology of Plagiobothrys hirtus (Boraginaceae) : evaluation of life history and population enhancement

Movements, habitat associations, and survival of Columbian white-tailed deer in western Oregon

Future climate projections. Douglas County : May 2023

Ecological relationships between Columbian white-tailed and black-tailed deer in southwest Oregon

Daily activity patterns, survival, and movements of red tree voles (Arborimus longicaudus) in western Oregon

Historic Survival Rates and Cause-Specific Mortality for Columbian Black-Tailed Deer in Southwest Oregon

Comparison of methods to estimate population density of Pacific giant salamanders in small streams of the southern Oregon Cascades

Basin-scale variation in the spatial pattern of fall movement of juvenile coho salmon in the West Fork Smith River, Oregon

Factors influencing within-watershed genetic variation of coastal cutthroat trout in Camp Creek, Oregon

A guide to riparian tree planting in southwest Oregon

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