Index Catalog // ScholarsArchive@OSU

Analyzing patterns of woody plant richness at multiple spatial scales with modeled photosynthesis

Creator:: Swenson, Jennifer J.
Abstract:: The hump-shaped relationship that predicts highest species richness (species/unit area) at intermediate levels of productivity was examined for woody plants across the Pacific and Inland Northwest of the U.S. Many studies have examined this relationship at regional scales, but commonly use species range maps and surrogate measures of productivity (e.g....
Resource Type:: Dissertation

A key to the literature on forest growth and yield in the Pacific Northwest, 1910-1981

Creator:: Hann, David W., Riitters, K. H. (Kurt H.), and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: . op.2 COMPACT A KEY TO THE LITERATURE ON FOREST GROWTH AND YIELD IN THE PACIFIC NORTHWEST: '1910

Best management practices for maintaining soil productivity in the Douglas-fir region

Creator:: Oregon State University. Extension Service, Angima, S. D., Terry, Thomas A., Dobkowski, Alexander, Campbell, Steve, Grizzel, Jeffrey D., Harrison, Robert B., Heninger, Ronald L., Maguire, Douglas A. (Douglas Alan), Miller, Richard E., Page-Dumroese, Deborah S., Scott, William, and Zabowski, D.
Abstract:: This publication is a reference guide for forest soils productivity and management. Main topics include (1) understanding and managing risk, (2) soil characteristics that affect productivity, (3) soil survey information for forestland managers/management of soil erosion, (4) managing mass wasting risk, (5) managing soil disturbance, and (6) maintaining adequate nutrient...
Resource Type:: Technical Report

Productivity interfirm comparison : methodologies with a special application to the Northwest food processors

Creator:: Park, Tongkyu
Abstract:: Based on the premise that interfirm comparison can be an effective productivity improvement tool, productivity interfirm comparison (PIC) methods are examined in this research. The first part is an extensive literature review regarding the conventional interfirm comparison (IFC) scheme accepted widely in many countries outside the United States. Then, the...
Resource Type:: Dissertation
Full Text:: : Productivity Interfirm Comparison: Methodologies with a Speical Application)to the Northwest Food Processors

A pocket guide: common natural enemies of crop and garden pests in the Pacific Northwest

Creator:: Oregon State University. Extension Service and Ambrosino, Mario D.
Abstract:: The cards in this guide are designed to help you quickly learn the main groups of natural enemies of crop and garden pests, their predacious activity, and tips for observing them. Photographs are of the most common species in the Pacific Northwest.
Resource Type:: Technical Report
Full Text:: Garden Pests in the Pacific Northwest A Pocket Guide Common Natural Enemies of Crop and Garden Pests

Evaluating Leucopis species (Diptera: Chamaemyiidae) from the Pacific Northwest as potential biological control agents of the hemlock woolly adelgid (Hemiptera: Adelgidae)

Creator:: Grubin, Sarah M.
Abstract:: Hemlock woolly adelgid, Adelges tsugae Annand, is a destructive introduced pest of hemlock trees in eastern North America, and management has focused on the use of natural enemies through classical biological control. Two species of chamaemyiid flies, Leucopis argenticollis Zetterstedt and Leucopis atrifacies (Aldrich) have been collected previously from western...
Resource Type:: Masters Thesis
Full Text:: : Chamaemyiidae) from the Pacific Northwest as Potential Biological Control Agents of the Hemlock Woolly

Enhancing pest mite biological control by Typhlodromus pyri (Acari: Phytoseiidae) in Pacific Northwest vineyards

Creator:: Gadino, Angela Noelle
Abstract:: The predatory mite Typhlodromus pyri (Acari: Phytoseiidae) is the predominant species in cool climate Pacific Northwest vineyards and a principal predator of pest mites including the grapevine rust mite Calepitrimerus vitis (Acari: Eriophyidae). In recent years vineyards have been experiencing C. vitis population outbreaks leading to increased economic damage from...
Resource Type:: Dissertation
Full Text:: Biological Control by Typhlodromus pyri (Acari: Phytoseiidae) in Pacific Northwest Vineyards by

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:: Hemlock Woolly Adelgid (Hemiptera: Adelgidae) Infested Western Hemlock in the Pacific Northwest

Soil respiration, carbon and nitrogen leaching, and nitrogen availability in response to harvest intensity and competing vegetation control in Douglas-fir (Pseudotsuga menziesii) forests of the Pacific Northwest

Creator:: Slesak, Robert A.
Abstract:: Management practices following forest harvest can affect long-term soil productivity through alteration of soil carbon (C) and nitrogen (N) pools, but processes contributing to change are poorly understood. I assessed effects of three levels of logging-debris retention in combination with initial or annual applications of competing vegetation control (CVC) following...
Resource Type:: Dissertation
Full Text:: Douglas-fir (Pseudotsuga menziesii) forests of the Pacific Northwest Abstract approved

Tactics for enhancing conservation biological control of twospotted spider mites, Tetranychus urticae Koch, in Pacific Northwest hop yards

Creator:: Woods, Joanna L.
Abstract:: The twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is a worldwide pest of numerous agronomic and horticultural plants. Conservation biological control of this pest can be unreliable due to asynchrony of natural enemies and certain horticultural practices that have a direct or indirect affect on natural enemies and the...
Resource Type:: Masters Thesis
Full Text:: Conservation Biological Control of Twospotted Spider Mites, Tetranychus urticae Koch, in Pacific Northwest Hop

ScholarsArchive@OSU

Analyzing patterns of woody plant richness at multiple spatial scales with modeled photosynthesis

A key to the literature on forest growth and yield in the Pacific Northwest, 1910-1981

Best management practices for maintaining soil productivity in the Douglas-fir region

Productivity interfirm comparison : methodologies with a special application to the Northwest food processors

A pocket guide: common natural enemies of crop and garden pests in the Pacific Northwest

Evaluating Leucopis species (Diptera: Chamaemyiidae) from the Pacific Northwest as potential biological control agents of the hemlock woolly adelgid (Hemiptera: Adelgidae)

Enhancing pest mite biological control by Typhlodromus pyri (Acari: Phytoseiidae) in Pacific Northwest vineyards

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

Soil respiration, carbon and nitrogen leaching, and nitrogen availability in response to harvest intensity and competing vegetation control in Douglas-fir (Pseudotsuga menziesii) forests of the Pacific Northwest

Tactics for enhancing conservation biological control of twospotted spider mites, Tetranychus urticae Koch, in Pacific Northwest hop yards

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