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Autecology, reproductive ecology, and demography of Astragalus australis var. olympicus (Fabaceae)

Creator:: Kaye, Thomas N.
Abstract:: The goal of this study was to gather information on the autecology, reproductive ecology, and population dynamics of Astragalus australis var. olympicus as a baseline for conservation strategies and to help explain its restricted range. Approximately four thousand individuals occurred in four known population centers in the Olympic Mountains, Olympic...
Resource Type:: Masters Thesis
Full Text:: australis var. olympicus populations in the Olympic Mountains, Clallam County, Washington. 7 CHAPTER II

Fescue taxonomy in the Pacific coast states

Creator:: Wilson, Barbara L.
Abstract:: Accurate taxonomy is essential to preservation and management of native grasses. Four problems in fescue taxonomy were investigated: the identity of the native fescue that dominates western Oregon and Washington prairies, the relationship of native Festuca roemeri to closely related grasses, the status of F. howellii and F. washingtonica, and...
Resource Type:: Dissertation
Full Text:: Mountains, WallaWalla County, Washington) (Hitchcock & Chase 1950). However, Piper 2410 was collected far

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

Conservation genetics of Kincaid's lupine : a threatened plant of western Oregon and southwest Washington grasslands

Creator:: Severns, Paul M.
Abstract:: Kincaid's lupine (Lupinus oreganus Heller) is a federally listed threatened species native to remnant grassland of western Oregon and southwestern Washington, and is the primary larval host plant of a once thought extinct butterfly, Plebejus icarioides fenderi Macy. Past studies concerning Kincaid's lupine reproduction suggested that populations may suffer reductions...
Resource Type:: Dissertation
Full Text:: : Conservation Genetics of Kincaid’s Lupine: A Threatened Plant of Western Oregon and Southwest Washington

Responses of forest understory plants to burial by volcanic tephra from Mount St. Helens, Washington

Creator:: Antos, Joseph A.
Abstract:: The effects of burial by tephra (volcanic aerial ejecta) on forest understory plants were examined northeast of Mount St. Helens, Washington, in the area where the 18 May 1980 eruption deposited tephra but did not destroy canopy trees. At six sites along a tephra depth gradient from 2-15 cm, understory...
Resource Type:: Dissertation
Full Text:: volcanic tephra from Mount St. Helens, Washington AN ABSTRACT OF THE THESIS OF Joseph A. Antos for the

Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

Creator:: Cazares, Efren
Resource Type:: Dissertation
Full Text:: Mountains of Washington. The aim was to determine relationships between mycotrophy of plant species and

Relationships of exotic species and wildfire to the threatened plant Silene spaldingii

Creator:: Menke, Carolyn A.
Abstract:: In the canyon grasslands of Garden Creek Ranch Preserve in Idaho, where the threatened plant Silene spaldingii occurs and invasion by the exotic species Centaurea solstitialis and Bromus tectorum is proceeding rapidly, I examined environmental and community patterns of site invasion, and evaluated the apparent influence of invasion on Silene...
Resource Type:: Masters Thesis
Full Text:: productivity in invaded populations, or may indicate that mature Silene plants and the exotic species

Reproduction, demography, and habitat characterization of Astragalus peckii (Fabaceae), a rare central Oregon endemic

Creator:: Martin, Elizabeth F.
Abstract:: With little previous research on Astragalus peckii (Fabaceae), a state-listed Threatened species in Oregon, I investigated three facets of its biology which are integral to the conservation and management of the species. First, a four-year demographic study of two large populations revealed increasing population growth at one site (Chiloquin) and...
Resource Type:: Dissertation
Full Text:: germination or seedling survival. In order to minimize inbreeding depression in the field, adequate sizes

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

Creator:: Seyer, Susan C.
Resource Type:: Masters Thesis
Full Text:: few descriptions for these montane mires in Oregon or Washington exist(Franklin and Dyrness, 1973

Impacts of ponderosa pine forest restoration treatments on the ectomycorrhizal fungal community and fine root biomass in the Blue Mountains of Oregon

Creator:: Smith, Jane E. (Jane Elizabeth)
Abstract:: Before the arrival of Euro-Americans, the inland Pacific Northwest was settled by native people whose frequent intentional burning of the landscape promoted open stands dominated by large fire-resistant ponderosa pine. Fire suppression for nearly a century, livestock grazing, and logging of the largest trees has resulted in forests characterized by...
Resource Type:: Dissertation
Full Text:: Washington where forest managers are applying prescribed fire and thinning to reduce the risk of stand

ScholarsArchive@OSU

Autecology, reproductive ecology, and demography of Astragalus australis var. olympicus (Fabaceae)

Fescue taxonomy in the Pacific coast states

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

Conservation genetics of Kincaid's lupine : a threatened plant of western Oregon and southwest Washington grasslands

Responses of forest understory plants to burial by volcanic tephra from Mount St. Helens, Washington

Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

Relationships of exotic species and wildfire to the threatened plant Silene spaldingii

Reproduction, demography, and habitat characterization of Astragalus peckii (Fabaceae), a rare central Oregon endemic

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

Impacts of ponderosa pine forest restoration treatments on the ectomycorrhizal fungal community and fine root biomass in the Blue Mountains of Oregon

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