Index Catalog // ScholarsArchive@OSU

Creator:: Meinke, Robert James
Abstract:: The Mimulus washingtonensis complex is a group of morphologically similar species centered in the Pacific Northwest. All are rare, and most are under consideration for listing as endangered. Morphometric and pollination data were used in developing a revised taxonomy for the group. Five species and two varieties are recognized. Mimulus...
Resource Type:: Dissertation
Full Text:: (Scrophulariaceae) in the Pacific Northwest : implications for conservation biology AN ABSTRACT OF THE THESIS OF

Creator:: Wagner, R. Steven
Abstract:: Phylogeographic studies of six Pacific Northwest forest-associated salamanders provide insight into historical and contemporary processes on population genetic structure. Among Larch Mountain Salamanders (Plethodon larselli), cytochrome b mitochondrial (mtDNA) sequences (381 bp) and random amplified polymorphic DNA (RAPDs; 34 loci) supported separate Management Units for northern and southern populations (12...
Resource Type:: Dissertation
Full Text:: . Evolution, and Conservation in Forest-associated Pacific Northwest Salamanders. Abstract Approved: Susan M

Creator:: Mullens, Jo Beth, 1964-
Abstract:: An innovative regional planning institution, the Northwest Power Planning Council, was created to plan for two conflicting water-related resources, fish and wildlife and electrical power. The Council is responsible for regional planning but implementation of those plans is largely the responsibility of four federal agencies and four state governments. As...
Resource Type:: Dissertation

Creator:: Zarnetske, Phoebe Lehmann
Abstract:: Biological invasions provide a unique opportunity to study the mechanisms that regulate community composition and ecosystem function. Invasive species that are also ecosystem engineers can substantially alter physical features in an environment, and this can lead to cascading effects on the biological community. Aquatic-terrestrial interface ecosystems are excellent systems to...
Resource Type:: Dissertation
Full Text:: Interactions on Grass Invasions and Coastal Dune Morphology in the Pacific Northwest, USA Abstract approved

Creator:: Zhang, Hongliang
Abstract:: Increased temperature and precipitation variability and frequent extreme weather events due to climate change pose a threat to farming operations and agricultural communities. The recent IPCC assessment shows that the projected climate change will, on average, reduce wheat yields by 5% in temperate regions without adaptation and even more if...
Resource Type:: Dissertation
Full Text:: .................................................................................................. 42 3 Is Conservation Tillage Risk-reducing? Evidence from the Pacific Northwest Winter Farms

Creator:: Adu-Asamoah, Richard
Abstract:: The Fishery Conservation and Management Act of 1976 took effect on March 1, 1977. By this Act the United States extended its management over fisheries to 200 nautical miles from shore. Extended fishery jurisdiction was expected to promote industry development and expand the contribution of the fishing industry to the...
Resource Type:: Dissertation
Full Text:: Jurisdiction for the Pacific Northwest Fishery Abstract approved: A/V ^W-.-^ ^/- R. Bruce^Rettig The

Creator:: Lam, Tzeng Yih
Abstract:: Variable-retention harvesting was proposed to reduce loss of biodiversity and ecosystem processes associated with late-seral Douglas-fir (Pseudotsuga menziesii) forests in the Pacific Northwest. The Demonstration of Ecosystem Management Options experiment was established to test this hypothesis. Analysis presents various challenges to drawing statistical inferences about treatment effects. This dissertation explored...
Resource Type:: Dissertation
Full Text:: in the Pacific Northwest. The Demonstration of Ecosystem Management Options experiment was

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