Index Catalog // ScholarsArchive@OSU

Creator:: Hamilton, William L.
Abstract:: Streamflow forecasts are essential to the optimal operation of hydroelectric and irrigation reservoirs in the Pacific Northwest. Satellite snow cover observations would aid in these streamflow forecasts by providing snow cover data at regular time intervals. Unfortunately, satellite capability to remotely sense mountain snow cover conditions is indeterminate due to...
Resource Type:: Dissertation

Creator:: Wevers, Mary Jo
Abstract:: An approach to understanding and managing anadromous salmon, steelhead, and sea-run cutthroat trout (Oncorhynchus spp.) based on life history and evolutionary adaptive capacities of species and stocks is presented. Species, stocks, and local populations are viewed as systems that are continuously adapting to changing environmental conditions. They have the potential...
Resource Type:: Dissertation

Creator:: Tolzman, Stephen A.
Abstract:: This paper evaluates Oregon Statewide Planning Goal 5: Natural Resources and Goal 17 Coastal Shorelands, planning programs and makes recommendations for improvement to the Oregon members of the Columbia River Estuary Study Task Force (CREST). CREST is a Council of Governments formed in 1974 which includes the local counties, cities...
Resource Type:: Capstone Project

Creator:: Homer, Pamela E.
Abstract:: Nonpoint sources of pollution are being recognized nationwide as a significant threat to groundwater quality. In Oregon, groundwater supplies in several areas have been affected by contamination possibly caused by nonpoint sources associated with agricultural activities, on-site sewage disposal, and inadequate hazardous materials management in urban areas. State groundwater protection...
Resource Type:: Capstone Project

Creator:: Drew, Aaron D.
Abstract:: I evaluated the response of the federally listed endangered plant species Bradshaw's desert parsley (Lomatium bradshawii) to livestock grazing and small mammal depredation at Oak Creek, Linn County, Oregon, 1997-1998. I established six study blocks (three each in wooded and herbaceous pastures) with plots in each block randomly assigned to...
Resource Type:: Masters Thesis

Creator:: Wickramaratne, Siri Nimal
Abstract:: The nature and extent of niparian vegetation change from 1972 to 1981 in the Willamette River Greenway in Benton and Linn Counties, Oregon was quantitatively investigated. The study was primarily by aerial imagery analysis and associated field verification. A classification of vegetation and land cover within the study area was...
Resource Type:: Masters Thesis

Creator:: Valdes-Casillas, Carlos
Abstract:: Coastal wetlands provide basic linkages between productive estuarine and freshwater ecosystems. Throughout the Mexican coast, rates of wetland loss and change are unknown. This project developed wetland inventories for 1973 and 1991, including ecological functions and values, and human activities in and around the wetlands. Data was integrated by use...
Resource Type:: Dissertation

Creator:: Tunhikorn, Schwann
Abstract:: Patterns of resource partitioning among 4 sympatric sturnids: [black-collared starling (Sturnus nigricollis), pied starling (S. contra), common myna (Acridotheres tristis) and crested myna (A. javanicus) were determined based on their food habits, foraging and nesting microhabitat selection, morphology and behavior. The study was conducted from March 1986 to June 1988...
Resource Type:: Dissertation

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