Index Catalog // ScholarsArchive@OSU

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Creator:: Giesen, Thomas William
Abstract:: Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
Resource Type:: Masters Thesis
Full Text:: Severe Fire in a Western Cascades Forest Landscape Abstract approved: Steven S. Perakis

Riparian litter inputs to streams in the central Oregon Coast Range

Creator:: Hart, Stephanie K.
Abstract:: Riparian zone vegetation can influence terrestrial and aquatic food webs through variations in the amounts, timing, and nutritional content of leaf and other litter inputs. Differences in vegetation composition and density, as well as riparian topography, may modulate the strength and quality of these inputs. Changes in inputs to small...
Resource Type:: Masters Thesis
Full Text:: : David E. Hibbs Steven S. Perakis Riparian zone vegetation can influence terrestrial and aquatic

Seasonal movement patterns and habitat use of westslope cutthroat trout in two headwater tributary streams of the John Day River

Creator:: Starcevich, Steven J.
Abstract:: Radiotelemetry was used to study the seasonal movements and habitat use of adult westslope cutthroat trout Oncorhynchus clarki lewisi in Roberts Creek and Rail Creek, headwater tributaries of the John Day River, Oregon, from September 2000 to December 2001. The objectives were to (1) describe adult cutthroat trout life history...
Resource Type:: Masters Thesis
Full Text:: Steven J. Starcevich for the degree of Master of Science in Fisheries Science presented on December 1

10Be exposure ages of erratic boulders in southern Norway and implications for the history of the Fennoscandian Ice Sheet

Creator:: Goehring, Brent M.
Abstract:: This thesis focuses on the application of the cosmogenic nuclide Beryllium-10 (10Be) in an effort to better constrain the thickness history of the Fennoscandian Ice Sheet (FIS) at the Last Glacial Maximum (LGM) and into the Holocene, as well as begin to answer the long-standing question regarding the age and...
Resource Type:: Masters Thesis
Full Text:: paleoclimate. I would also like to thank my committee, Peter Clark, Steven Hostetler, and William Warnes, for

Biosynthesis studies and mutasynthesis of myxobacterial secondary metabolites

Creator:: Knight, Eva W.
Abstract:: Myxobacteria represent an interesting class of Gram-negative soil bacteria. These bacteria utilize organic materials from the environment as a food source by the action of their extracellular hydrolytic enzymes. They grow vegetatively in the presence of adequate nutrients. During starvation conditions, however, they aggregate and form multicellular structures called fruiting...
Resource Type:: Masters Thesis

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Creator:: Cross, Alison
Abstract:: Tree species directly and indirectly affect soil nutrient cycles. I sought to characterize soils and foliage associated with four common canopy tree species (Douglas-fir, western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon Coast Range and to determine whether and how soils differ among the...
Resource Type:: Masters Thesis
Full Text:: : __________________________________________________________________ Steven S. Perakis Tree species directly and indirectly affect soil nutrient cycles. I

Nine native Mexicans families in the Willamette Valley

Creator:: Cervantes, Willan A.
Abstract:: The Mixteco primarily reside in the Mexican State of Oaxaca in Southwestern Mexico. They have been arriving in larger numbers then ever before to this part of the North American continent in the last twenty years.Their experience is composed of different dynamics compared to those of their mainstream Mexican counterpart....
Resource Type:: Masters Thesis

Predators associated with hemlock woolly adelgid (Hemiptera: Adelgidae) infested western hemlock in the Pacific Northwest.

Creator:: Kohler, Glenn R.
Abstract:: The hemlock woolly adelgid, Adelges tsugae, is causing widespread mortality of eastern hemlock, Tsuga canadensis, in the eastern United States. In the West, A. tsugae causes negligible damage to western hemlock, Tsuga heterophylla. Host tolerance traits and presence of endemic predators may be contributing to the relative tolerance of western...
Resource Type:: Masters Thesis
Full Text:: , Steve Gaimari, Steven Heydon, Steve Krauth, Paris Lambdin, John Lattin, John Luhman, Alfred Newton

Is "Smart Growth" smart? : health effects of urban renewal in Portland, Oregon

Creator:: Buerger, Catherine F.
Abstract:: This thesis examines the impact of urban renewal on individual health, specifically focusing on an urban planning model called Smart Growth that is being used in Portland, Oregon. Findings are based on qualitative and quantitative analyses of interview and survey data from study participants living in a community where renewal...
Resource Type:: Masters Thesis
Full Text:: , Omidian 1996, Englund 1998, Miller and Rasco 2004), there has been little research committed to studying

Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

Creator:: Smith, Matthew T. (Matthew Todd)
Abstract:: Article 1: Behavior of Epoxy Injected Diagonally Cracked Full-Scale CRC Deck-Girders. Many cast-in place reinforced concrete deck-girder bridges (RCDG) remain in the national inventory and exhibit diagonal cracking. Epoxy injection has been in use for several decades as a method for sealing diagonal cracks, but the effects on girder behavior...
Resource Type:: Masters Thesis
Full Text:: . Steven Soltesz. All epoxy resins were donated by Bruce Jackson, BASF sales manager. Equipment and

ScholarsArchive@OSU

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Riparian litter inputs to streams in the central Oregon Coast Range

Seasonal movement patterns and habitat use of westslope cutthroat trout in two headwater tributary streams of the John Day River

10Be exposure ages of erratic boulders in southern Norway and implications for the history of the Fennoscandian Ice Sheet

Biosynthesis studies and mutasynthesis of myxobacterial secondary metabolites

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Nine native Mexicans families in the Willamette Valley

Predators associated with hemlock woolly adelgid (Hemiptera: Adelgidae) infested western hemlock in the Pacific Northwest.

Is "Smart Growth" smart? : health effects of urban renewal in Portland, Oregon

Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

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