Index Catalog // ScholarsArchive@OSU

Riparian cover changes associated with flow regulation and bank stabilization along the Upper Willamette River in Oregon between 1939 and 1996

Creator:: Gutowsky, Sharon L.
Abstract:: This study investigates riparian cover change between 1939 and 1996 utilizing aerial photography, bank conditions and stream gauge data. Three sites under 1.0 km2, along a 10- km reach north of Harrisburg, Oregon, were evaluated. The cover classification scheme included 18 classes composed of 3 canopy densities and 8 structural...
Resource Type:: Masters Thesis

Soil erosion assessment in the Republic of Cape Verde, West Africa, using a geographic information system

Creator:: Gomez, Sharon N.
Abstract:: Soil erosion is a natural physical process. However it can become a detrimental force when factors such as infertile soils, steep topography and poor farming practices are combined. An important initial aspect of resource planning and/or soil conservation involves locating areas where such potentially hazardous combinations occur in the field....
Resource Type:: Masters Thesis

Spatial distribution of understory vegetation in tree canopy gaps of the Pacific Northwest

Creator:: London, Sharon Gail
Abstract:: Understory vegetation in artificially created tree canopy gaps in the Pacific Northwest was studied to determine 1) variation in understory vegetation cover between gap edges and gap centers, as well as between control and treatment plots, 2) spatial patterns of biomass and difference in biomass patterns among plots, 3) individual...
Resource Type:: Masters Thesis

Late Devonian (Famennian) brachiopods of the West Range Limestone and the Pilot Shale of Eastern Nevada

Creator:: Mayer, Paul S.
Resource Type:: Masters Thesis
Full Text:: Community occurs in a silty, clay-choked limestone interbedded with silt and mudstone. Community

Deconstructing density : Assessing the per capita influence on vegetation and impervious surface area in Corvallis, Oregon

Creator:: Rempel, Marco Gascho
Abstract:: The density at which urban areas are developed has become a contentious issue, with advocates for compact cities in conflict with advocates for larger lots and suburban development. This research paper examines the associated impact of population density (grouped by residential zones) as measured by vegetation (Normalized Difference Vegetation Index)...
Resource Type:: Capstone Project
Full Text:: VEGETATION AND IMPERVIOUS SURFACE AREA IN CORVALLIS, OREGON. by Marc Gascho Rempel A RESEARCH PAPER

The effects of stand thinning on soil erosion rates at Jim's Creek in the Willamette National Forest, Oregon

Creator:: McFadden, Andrew K.
Abstract:: Surface sediment transport is an important geomorphic process which can be significantly altered by management activities in forested ecosystems. Disturbance of the soil surface may result in increased sediment delivery to fish bearing streams and degradation of soil structure. Selective thinning and low impact yarding techniques were utilized in an...
Resource Type:: Capstone Project
Full Text:: . McFadden A RESEARCH PAPER Submitted to THE DEPARTMENT OF GEOSCIENCES In

Do vigorous young forests reduce streamflow? Results from up to 54 years of streamflow records in eight paired-watershed experiments in the H. J. Andrews and South Umpqua Experimental Forests

Creator:: Perry, Timothy D.
Abstract:: This study quantified the magnitude and timing of summer streamflow deficits in paired-watershed experiments in the Cascade Range of Oregon where mature and old-growth conifer forests were subjected to clearcutting, patch cutting, and overstory thinning treatments in the 1960s and 1970s. Hydrologic effects of clearcutting, small-patch cutting, and overstory thinning...
Resource Type:: Masters Thesis
Full Text:: have a very thick argillic horizon in which clay content varies by less than 20% within 150 cm of the

Predicting sediment delivery from small catchments in the Western Cascades of Oregon using the U.S.F.S. disturbed Water Erosion Prediction Project (WEPP) model

Creator:: Geren, Barbara A.
Abstract:: The U.S. Forest Service on the Willamette National Forest currently employs the “Disturbed Water Erosion Prediction Project” (WEPP) model to determine potential suspended sediment delivery from timber harvests or other treatment scenarios given user-defined hillslope parameters. At the time of this study there was no known calibration or testing of...
Resource Type:: Capstone Project
Full Text:: on texture: clay loam, silt loam, sandy loam, and loam. A “Universal Soil Classification Code

Meadow classification in the Willamette National Forest and conifer encroachment patterns in the Chucksney-Grasshopper meadow complex, Western Cascade Range, Oregon

Creator:: Dailey, Michele Meadows
Abstract:: This study delineates and characterizes the distribution of montane meadows in the Willamette National Forest, identifies encroachment patterns in relation to topographic features and proximity to trees in the Chucksney-Grasshopper meadow complex, and examines tree species and age distributions in relation to distance from forest edges or isolated tree clusters...
Resource Type:: Masters Thesis
Full Text:: Chucksney-Grasshopper Meadow Complex, Western Cascade Range, Oregon. Abstract approved: Julia A

Base and precious metal deposits in the western Cascades of Oregon and southern Washington : mineralogy, fluid inclusion, and sulfur isotopes

Creator:: Summers, Cathy A.
Resource Type:: Masters Thesis
Full Text:: , total replacement of primary silicates results in a quartz-clay or quartz-sericite rock. These

ScholarsArchive@OSU

Riparian cover changes associated with flow regulation and bank stabilization along the Upper Willamette River in Oregon between 1939 and 1996

Soil erosion assessment in the Republic of Cape Verde, West Africa, using a geographic information system

Spatial distribution of understory vegetation in tree canopy gaps of the Pacific Northwest

Late Devonian (Famennian) brachiopods of the West Range Limestone and the Pilot Shale of Eastern Nevada

Deconstructing density : Assessing the per capita influence on vegetation and impervious surface area in Corvallis, Oregon

The effects of stand thinning on soil erosion rates at Jim's Creek in the Willamette National Forest, Oregon

Do vigorous young forests reduce streamflow? Results from up to 54 years of streamflow records in eight paired-watershed experiments in the H. J. Andrews and South Umpqua Experimental Forests

Predicting sediment delivery from small catchments in the Western Cascades of Oregon using the U.S.F.S. disturbed Water Erosion Prediction Project (WEPP) model

Meadow classification in the Willamette National Forest and conifer encroachment patterns in the Chucksney-Grasshopper meadow complex, Western Cascade Range, Oregon

Base and precious metal deposits in the western Cascades of Oregon and southern Washington : mineralogy, fluid inclusion, and sulfur isotopes

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