Index Catalog // ScholarsArchive@OSU

Protection of pandora moth (Coloradia pandora Blake) eggs from consumption by golden-mantled ground squirrels (Spermophilus lateralis Say)

Creator:: Gerson, Elizabeth Ann
Abstract:: Endemic populations of pandora moths (Co/oradia pandora Blake), a defoliator of western pine forests, proliferated to epidemic levels in central Oregon in 1986 and increased dramatically through 1 994. Golden-mantled ground squirrels (Spermophilus lateralis Say) consume adult pandora moths, but reject nutritionally valuable eggs from gravid females. Feeding trials with...
Resource Type:: Masters Thesis
Full Text:: committee, Drs. William C. McComb, Darrell W. Ross, and W. Daniel Edge for their help in defining this

A Review and Toxicological Evaluation of an Environmentally-Friendly Alternative to Silver Nanoparticles

Creator:: Nix, Cassandra E.
Abstract:: Within the past two decades, the rise of nanotechnology has provided various technological and industrial sectors with avenues for significant growth and improvements to existing practices. With the inherent qualities which make materials on the nanoscale unique in behavior and function, there are limitless applications of nanotechnology. One of the...
Resource Type:: Masters Thesis

Estimation of Population Age Structure, Detection Probability, and Density of Red Tree Voles in Oregon

Creator:: Marks-Fife, Chad A.
Abstract:: Red tree voles (Arborimus longicaudus) are a unique species of Arvicoline rodent found in western Oregon and northwest California. Their preferred habitat is mature and old-growth coniferous forest dominated by Douglas-fir (Pseudotsuga menziesii). Tree voles are an important prey item for northern spotted owls and many other predators, but are...
Resource Type:: Masters Thesis
Full Text:: which I can never adequately thank him. I want to thank my committee members, Dan Edge and Bob Mason

Beaver ecology on the west Copper River Delta, Alaska

Creator:: Cooper, Erin E.
Abstract:: Since the 1964 earthquake and geologic uplift, beavers (Castor canadensis) have expanded their historic range from the inland (outwash plain) Copper River Delta, Alaska to the once tidally influenced areas of the outer area (uplifted marsh). The uplift presents a unique opportunity to observe beaver expansion, habitat selection and influence...
Resource Type:: Masters Thesis
Full Text:: process. I also thank the members of my graduate committee, Alix Gitelman, Dan Edge and Robert Beschta

Moving towards sustainability and increasing user safety by improving performance of RAP mixtures and developing a network-level decision-making tool for pavement maintenance

Creator:: Haddadi, Sogol Sadat
Abstract:: Due to a general reduction in pavement program funding levels over the past decade, the current budget is not sufficient to maintain roadways at a high level of service with acceptable roughness levels. Rough roadways with poor ride quality increase drivers’ vehicle operating costs (fuel consumption, vehicle maintenance, and tire-wear)...
Resource Type:: Masters Thesis

Breeding habitat of harlequin ducks in Prince William Sound, Alaska

Creator:: Crowley, David W.
Abstract:: Breeding habitat of Harlequin ducks (Histrionicus histrionicus) was studied in eastern Prince William Sound, Alaska, during 1991 - 1993. Streams in Prince William Sound were surveyed for Harlequin ducks and monitored with mist nets. Physical characteristics of 24 Harlequin breeding streams were compared to those of 24 streams not used...
Resource Type:: Masters Thesis
Full Text:: committee members Charles Meslow, William McComb, John Hayes and Daniel Edge for their review and comments

Ecological relationships between Columbian white-tailed and black-tailed deer in southwest Oregon

Creator:: Whitney, Lowell W.
Abstract:: I examined ecological relationships and mechanisms of coexistence for sympatric populations of Columbian white-tailed (Odocoileus virginianus leucurus) and black-tailed deer (Odocoileus hemionus columbianus) in Douglas County, Oregon, from September 1997 to August 1998. Horseback transects were used to describe spatial distributions, population overlap, and habitat use for both species. Behavioral...
Resource Type:: Masters Thesis

Associations of forest floor vertebrates with coarse woody debris in managed forests, western Oregon Cascades

Creator:: Butts, Sally R.
Abstract:: Forest floor vertebrate species presence and abundance may be influenced by the volume and cover of coarse woody debris (CWD) in managed forests. I studied macro- and microhabitat associations of vertebrate species in 18 closed-canopy stands ranging in CWD volume from 14 to 859 m3/ha. Pitfall traps were used to...
Resource Type:: Masters Thesis

Determining the relationship between measured residence time distributions in lateral surface transient storage zones in streams and corresponding physical characteristics

Creator:: Coleman, Anthony M.
Abstract:: Surface transient storage (STS) in stream ecosystems serve an important function in retaining nutrients and refugia for aquatic communities. Unfortunately, they can retain contaminants as well. Therefore, it is of importance to determine the residence time distribution (RTD). A RTD of a particular STS zone encompasses the time it takes...
Resource Type:: Masters Thesis
Full Text:: Bartholomew, and Dan Edge; as well as Mary Santelmann, Director of the Water Resources Graduate Program

Effectiveness of curve advisory speed signs : a characterization of road operations in western Oregon

Creator:: Avelar Morán, Raúl Eduardo
Abstract:: Posting advisory speed signs at sharp horizontal curve locations is a common practice in the U.S. These signs recommend drivers safe speeds to negotiate such curves. Literature indicates that adherence to advisory speeds is, in general, poor. Moreover, limited research is available that quantifies safety implications of these signs. This...
Resource Type:: Masters Thesis
Full Text:: and Rohani. Source: Karen K. Dixon, Joshan W. Rohani, SPR 641: Methodologies for Estimating

ScholarsArchive@OSU

Protection of pandora moth (Coloradia pandora Blake) eggs from consumption by golden-mantled ground squirrels (Spermophilus lateralis Say)

A Review and Toxicological Evaluation of an Environmentally-Friendly Alternative to Silver Nanoparticles

Estimation of Population Age Structure, Detection Probability, and Density of Red Tree Voles in Oregon

Beaver ecology on the west Copper River Delta, Alaska

Moving towards sustainability and increasing user safety by improving performance of RAP mixtures and developing a network-level decision-making tool for pavement maintenance

Breeding habitat of harlequin ducks in Prince William Sound, Alaska

Ecological relationships between Columbian white-tailed and black-tailed deer in southwest Oregon

Associations of forest floor vertebrates with coarse woody debris in managed forests, western Oregon Cascades

Determining the relationship between measured residence time distributions in lateral surface transient storage zones in streams and corresponding physical characteristics

Effectiveness of curve advisory speed signs : a characterization of road operations in western Oregon

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