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

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

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

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

Seasonal changes in distribution of coastal cutthroat trout in an isolated watershed

Creator:: Hendricks, Steve
Abstract:: In an effort to identify seasonal distribution patterns and habitat requirements of coastal cutthroat trout Oncorhynchus clarki clarki, movement of tagged and marked individuals (35 radio-tagged, 753 PIT-tagged, and 5,322 fin-clipped) was monitored over a 14-month period in an isolated watershed in southwestern Oregon. Emigration out of the basin was...
Resource Type:: Masters Thesis
Full Text:: OF FIGURES Figure Page Camp Creek study area, Douglas County, Oregon. 7 Monthly average staff

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

Over-wintering diet, growth, and prey available to juvenile coho salmon (Oncorhynchus kisutch) in the West Fork Smith River, Oregon

Creator:: Olegario, Anthony
Abstract:: Over-winter growth of juvenile salmonids may be linked to ocean survival and thus species persistence. Diet, growth, and prey available to juvenile coho, Oncorhynchus kisutch, were examined from December 2004 to April 2005 in four tributaries of the West Fork Smith River (WFSR), Oregon. Juvenile coho growth rate and condition...
Resource Type:: Masters Thesis
Full Text:: Smith River basin. Douglas County, Oregon. Rectangles represent study reaches

Response of needle-litter decomposition and soil nitrogen mineralization to logging-debris manipulation and competing vegetation control in western Oregon and Washington

Creator:: Meehan, Nathan Andrew
Abstract:: Growing societal demand for forest products is pressuring managers to increase productivity from a finite land area, and it is expected that increased supply will come mostly from expansion of intensively managed stands. The USDA Forest Service and numerous collaborators created the Long-Term Soil Productivity (LTSP) network of research sites...
Resource Type:: Masters Thesis
Full Text:: Nitrogen Mineralization to Logging-Debris Manipulation and Competing Vegetation Control in Western Oregon

ScholarsArchive@OSU

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

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

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

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

Seasonal changes in distribution of coastal cutthroat trout in an isolated watershed

A guide to riparian tree planting in southwest Oregon

Over-wintering diet, growth, and prey available to juvenile coho salmon (Oncorhynchus kisutch) in the West Fork Smith River, Oregon

Response of needle-litter decomposition and soil nitrogen mineralization to logging-debris manipulation and competing vegetation control in western Oregon and Washington

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