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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:: . Abstract approved: _____________________________________________________________________ Darrell W

Predators of hemlock woolly adelgid in northwestern Oregon

Creator:: Byrkit, Maggie K.
Abstract:: Hemlock woolly adelgid, Adelges tsugae Annand, is a serious threat to eastern hemlock, Tsuga canadensis Carriere, in the eastern United States. Infestations of A. tsugae are spreading rapidly and tree mortality caused by the insect is increasing yearly. As part of an integrated management approach, a classical biological control program...
Resource Type:: Masters Thesis
Full Text:: Woolly Adelgid in Northwestern Oregon. Abstract approved: Darrell W. Ross Hemlock woolly adelgid

Top-down and Bottom-up Controls of Adelges tsugae in the Pacific Northwest Inform Its Biological Control in Eastern North America

Creator:: Rose, Alexander
Abstract:: The hemlock woolly adelgid (Hemiptera: Adelgidae: Adelges tsugae; HWA) is an invasive and damaging pest on hemlock in eastern North America. HWA is native to the Pacific Northwest, where it does not damage hemlock. In support of classical biological control of HWA in eastern North America, abundances of native predators...
Resource Type:: Masters Thesis
Full Text:: Darrell W. Ross The hemlock woolly adelgid (Hemiptera: Adelgidae: Adelges tsugae; HWA) is an invasive

Disinfection of settled and unsettled trickling filter effluent by chlorination

Creator:: Monroe, Darrell Wayne
Abstract:: The colicidal efficiency of chlorine in both settled and unsettled trickling filter effluent samples was determined by means of a series of tests in which each sample was analyzed, at given time intervals, for suspended solids, pH, residual chlorine (orthotolidine and iodometric) and coliform count. A dye-tracer study, using Rhodamine...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF DARRELL WAYNE MONROE for the

Measuring benefits of outdoor recreation services : an application of the household production function approach to the Oregon steelhead sport fishery

Creator:: Strong, Elizabeth J.
Abstract:: This study provides an empirical test of the Bockstael-McConnell (1980) household production function (HPF) framework for evaluating wildlife recreation. This is perhaps the first study in which both taste and technology parameters have been estimated with a theoretical model specification. The results suggest that for steelhead sport fishing in Oregon,...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS I am extremely grateful to Drs. William Brown, Roger Fight, Darrell Hueth, and Bruce Weber for

A general shop course of study for Oregon high schools

Creator:: Nichols, Frank Karl
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Frank Karl Nichols for the M. Ed

'Hysterical preservationists' and 'gouge-and-run bulldozer boys' : the land-use controversy in Idaho’s White Cloud Mountains, 1968-1972

Creator:: Jensen, Erica (Erica Lyn)
Abstract:: Similar to other spectacular scenic areas in the American West, Idaho’s White Cloud Mountains have been a contested landscape since the beginning of the 20th century. Although, legislation was introduced in Congress as early as 1913 to protect the towering mountains of south-central Idaho as a national park, the issue...
Resource Type:: Masters Thesis
Full Text:: Frank Church proposed legislation to protect the mountains with either a Forest Service administered

A follow up study of industrial arts graduates of Oregon State College since 1915

Creator:: Meyer, Edwin David
Resource Type:: Masters Thesis

Multiagent Learning via Dynamic Skill Selection

Creator:: Sachdeva, Enna
Abstract:: Multiagent coordination has many real-world applications such as self-driving cars, inventory management, search and rescue, package delivery, traﬃc management, warehouse management, and transportation. These tasks are generally character-ized by a global team objective that is often temporally sparse - realized only upon completing an episode. The sparsity of the shared...
Resource Type:: Masters Thesis

A history of intercollegiate wrestling at Oregon State University (1909-1974)

Creator:: Nelson, Richard C. (Richard Cornelius), 1932-
Abstract:: Intercollegiate wrestling at Oregon State University had its inception on March 20, 1909. On that day, the Oregon Agricultural College wrestling team wrestled in a home meet against the team from Washington State College. The Beavers, under the tutelage of their first coach Eddie O'Connell, won their first intercollegiate meet,...
Resource Type:: Masters Thesis
Full Text:: completion of the class matches, 14 Instructor O'Connell and Edgar Frank, from the Multnomah Athletic

ScholarsArchive@OSU

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

Predators of hemlock woolly adelgid in northwestern Oregon

Top-down and Bottom-up Controls of Adelges tsugae in the Pacific Northwest Inform Its Biological Control in Eastern North America

Disinfection of settled and unsettled trickling filter effluent by chlorination

Measuring benefits of outdoor recreation services : an application of the household production function approach to the Oregon steelhead sport fishery

A general shop course of study for Oregon high schools

'Hysterical preservationists' and 'gouge-and-run bulldozer boys' : the land-use controversy in Idaho’s White Cloud Mountains, 1968-1972

A follow up study of industrial arts graduates of Oregon State College since 1915

Multiagent Learning via Dynamic Skill Selection

A history of intercollegiate wrestling at Oregon State University (1909-1974)

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