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Spatiotemporal Assessment of Crop Histories in the Pacific Northwest

Creator:: Kumbhakar, Ishika G.
Abstract:: The cultivated potato (Solanum tuberosum) is one of the most important food crops in the United States, as well as globally. As demand rises, growers in the Pacific Northwest are revisiting their crop management strategies to determine whether there are additional ways to enhance crop productivity while managing plant and...
Resource Type:: Masters Thesis
Full Text:: entire PNW, the states within that region, and geographical sub-regions. This characterization of the

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:: Forest Service PNW Research Station and by a grant from USDA National Research Initiative (96-03 859

The source area for coarse woody debris in small streams in western Oregon and Washington

Creator:: McDade, Mary Helen
Abstract:: Large organic debris has important biological and physical roles within the stream ecosystem. In order to determine the source area of large organic debris in streams, thirty-nine streams in the Cascade and Coast Ranges of Oregon and Washington were sampled. The distance from point-of-origin to channel was measured for thirty...
Resource Type:: Masters Thesis

Impact of raspberry bushy dwarf virus, raspberry leaf mottle virus, and raspberry latent virus on plant growth and fruit crumbliness in red raspberry (Rubus idaeus L.) 'Meeker'

Creator:: Quito-Avila, Diego F.
Abstract:: The United States is the third-largest producer of raspberries in the world. Washington State leads the nation in red raspberry (Rubus idaeus L.) production. 'Meeker', the most grown red raspberry cultivar in the Pacific Northwest (Washington, Oregon and British Columbia, Canada) is highly susceptible to Raspberry crumbly fruit, a virusinduced...
Resource Type:: Dissertation
Full Text:: ”. Chapter 1: Introduction Diego F. Quito-Avila 2 The Pacific Northwest (PNW) (Oregon

Effects of variation in ecosystem carryover on biodiversity and community structure of forest floor bryophytes and understory vascular plants : a retrospective approach

Creator:: Traut, Bibit Halliday
Resource Type:: Masters Thesis

The relation of soil characteristics to growth and distribution of Chamaecyparis lawsoniana and Thuja plicata in southwestern Oregon

Creator:: Imper, David Kimberly
Abstract:: Twelve plots at six sites in southwestern Oregon were studied to determine the degree to which various soil characteristics are related to the occurrence and growth of Chamaecyparis lawsoniana and Thuja plicata. Soil profiles and vegetation were described in each plot, and measurements were made of insolation, soil and litter...
Resource Type:: Masters Thesis

Pathological and ecological aspects of decline and mortality of Chamaecyparis nootkatensis in southeast Alaska

Creator:: Hennon, Paul Edward
Abstract:: Alaska-cedar (Chamaecvparis nootkatensIs (D. Don) Spach) is a valuable tree that is suffering from a serious decline and mortality of unknown cause throughout southeast Alaska. Epidemiological and pathological studies were initiated to determine if a pathogen is the primary cause of this problem. By examining old aerial photographs and by...
Resource Type:: Dissertation
Full Text:: Introduction 137 Materials and Methods 141 Results 150 Root and crown symptoms 150 Fungal isolations 156 Fine

Growth and reproductive ecology of Larix laricina in interior Alaska

Creator:: Brown, Kevin R.
Abstract:: Larix laricina in Alaska occurs on sites ranging from productive slopes and riverbottoms to wet bogs underlain by permafrost. It is largest on sites without permafrost, where it is associated with Picea glauca, but is much more common in bogs, where it occurs with Picea mariana. In this study, I...
Resource Type:: Masters Thesis

Lichen Biomonitoring from Valley to Alpine in Central and Southern California

Creator:: Kovasi, Adrienne I.
Abstract:: In the mountains of central and southern California, high elevation wilderness areas lack epiphytic lichens that can be used to inform us about atmospheric deposition in multiple ways. Epiphytic lichens are capable of accumulating elements proportionally to the local atmospheric concentration, establishing them as commonly used biomonitor of key elements....
Resource Type:: Masters Thesis

The structure and dynamics of old-growth Sitka spruce (Picea sitchensis) forest of the Oregon Coast Range

Creator:: Quaye, Eric Charles
Abstract:: The objectives of this study are to: 1) study the variations among stands of old-growth Sitka spruce forest located within a relatively restricted geographical area, 2) determine the relationship between species distribution, vegetational pattern, and such site factors as slope and aspect, and 3) ascertain the abruptness of phytosociological change...
Resource Type:: Dissertation

ScholarsArchive@OSU

Spatiotemporal Assessment of Crop Histories in the Pacific Northwest

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

The source area for coarse woody debris in small streams in western Oregon and Washington

Impact of raspberry bushy dwarf virus, raspberry leaf mottle virus, and raspberry latent virus on plant growth and fruit crumbliness in red raspberry (Rubus idaeus L.) 'Meeker'

Effects of variation in ecosystem carryover on biodiversity and community structure of forest floor bryophytes and understory vascular plants : a retrospective approach

The relation of soil characteristics to growth and distribution of Chamaecyparis lawsoniana and Thuja plicata in southwestern Oregon

Pathological and ecological aspects of decline and mortality of Chamaecyparis nootkatensis in southeast Alaska

Growth and reproductive ecology of Larix laricina in interior Alaska

Lichen Biomonitoring from Valley to Alpine in Central and Southern California

The structure and dynamics of old-growth Sitka spruce (Picea sitchensis) forest of the Oregon Coast Range

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