Index Catalog // ScholarsArchive@OSU

Understory vegetation response and nitrogen cycling following cutting of western juniper

Creator:: Bates, Jonathan D.
Abstract:: Since the late 1880's western juniper has expanded in range and increased in density in sagebrush-bunchgrass, riparian, and forested plant communities of the Pacific Northwest. Succession to western juniper woodland has been shown to reduce the productivity and diversity of the understory component, result in concentration of soil nutrients beneath...
Resource Type:: Dissertation
Full Text:: Nitrogen Cycling Following ng of Wester -Juniper. Abstract approved : _ Richard F. Miller Abstract

Fire ecology and management in plant communities of Malheur National Wildlife Refuge, southeastern Oregon

Creator:: Young, Richard P.
Abstract:: This research assesses prescribed burning as a habitat management technique in wetlands and associated upland communities of Malheur National Wildlife Refuge, southeastern Oregon. Experimental burns were conducted to evaluate fire behavior and effects in wetland and upland habitats, and, fire effects on Cirsium arvense. Wetland plant communities were monotypic stands...
Resource Type:: Dissertation

Understory competition for resources in Pinus ponderosa forests of northeastern Oregon

Creator:: Riegel, Gregg M.
Abstract:: The objective of this research was to determine which environmental resources, light, water, and nutrients, control understory plant production and composition in a Pinus ponderosa forest in northeastern Oregon. A split-plot experimental design, with three blocks, four treatments, and 44 plots, was established in the summer of 1985. Twenty plots...
Resource Type:: Dissertation
Full Text:: Pinus ponderosa Forests of Northeastern Oregon Abstract approved: Redacted for Privacy Richard F

Phyto-edaphic relationships and ecotypic development of Festuca idahoensis in eastern Oregon habitat types of Artemisia tridentata

Creator:: Doescher, Paul Steven
Abstract:: This research assessed certain specific plant-soil and community interrelationships in eastern Oregon habitat types dominated by subspecies of Artemisia tridentata. The first evaluation described plant-induced soil chemical patterns for Artemisia tridentata plant communities of high perennial grass-low shrub and low perennial grass-high shrub composition. Soil concentrations of total nitrogen, organic...
Resource Type:: Dissertation
Full Text:: Dr. Richard F. Miller, my faculty advisor, who provided guidance, direction and friendship during the

Spatial expressions of farm size changes in the Polk and Linn counties of Oregon

Creator:: Van Otten, George A.
Abstract:: The spatial organization of farm units in Polk and Linn counties in the mid-Willamette Valley has undergone significant change over the past 30 years. Whereas most study areas operations in the 1930's and 1940's consisted of small family owned farms with contiguous land bases, present mid-Willamette Valley units vary considerably...
Resource Type:: Dissertation
Full Text:: FARM SIZE CHANGES IN POLK AND LINN COUNTIES sag_g EG Redacted for Privacy Abstract approved: Richard

Trophic dynamics of marine nekton and zooplankton in the Northern California Current ecosystem

Creator:: Miller, Todd William
Abstract:: The Northern California Current (NCC) ecosystem exhibits extreme seasonal, interannual and interdecadal shifts in the abiotic environment and shifts in primary and higher production. This variability is also apparent in the spatial structure of the ecosystem with nearshore-shelf waters (<150 m isobath) being highly productive and having a different community...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Todd William Miller for the degree of Doctor of Philosophy in

The biology of two species of Echinorhynchus (Acanthocephala) from marine fishes in Oregon

Creator:: Miller, Richard Leo
Resource Type:: Dissertation
Full Text:: ) from marine fishes in Oregon AN ABSTRACT OF THE THESIS OF RICHARD LEO MILLER for the degree of

The impacts of extended fisheries jurisdiction on seafood trade among selected countries : market share and product substitution

Creator:: Siaway, Arthur
Abstract:: By 1976 extended fisheries jurisdiction had been declared by most coastal states and territories of the world. The new regime of property rights was expected to affect seafood production costs which, in turn, could impact on seafood trade and the competitive positions of producing countries. In theory this policy should...
Resource Type:: Dissertation
Full Text:: heartfelt thanks and appreciation. I am grateful to: Dr. Richard S. Johnston, Professor of Agricultural

Risk analysis of alternative tillage systems in North Central Oregon dryland wheat production

Creator:: Akbari, Ahmad, 1952-
Resource Type:: Dissertation
Full Text:: Abstract approved: STANLEY F. MILLER The soil conservation systan that a farmer practices has an

The development of a performance-based adult high school diploma program at Linn Benton Community College : a case study

Creator:: Johnson, Jerome Alfred
Abstract:: The purpose of this case study was to describe the development of an adult high school diploma program at Linn Benton Community College, Specifically, the purposes of this study are: (1) the creation of an instructional approach utilizing performance objectives as a means of satisfying the minimum adult high school...
Resource Type:: Dissertation
Full Text:: PERFORMANCE-BASED ADULT HIGH SCHOOL DIPLOMA PROGRAM AT LINN BENTON COMMUNITY COLLEGE: A CASE STUDY Abstract

ScholarsArchive@OSU

Understory vegetation response and nitrogen cycling following cutting of western juniper

Fire ecology and management in plant communities of Malheur National Wildlife Refuge, southeastern Oregon

Understory competition for resources in Pinus ponderosa forests of northeastern Oregon

Phyto-edaphic relationships and ecotypic development of Festuca idahoensis in eastern Oregon habitat types of Artemisia tridentata

Spatial expressions of farm size changes in the Polk and Linn counties of Oregon

Trophic dynamics of marine nekton and zooplankton in the Northern California Current ecosystem

The biology of two species of Echinorhynchus (Acanthocephala) from marine fishes in Oregon

The impacts of extended fisheries jurisdiction on seafood trade among selected countries : market share and product substitution

Risk analysis of alternative tillage systems in North Central Oregon dryland wheat production

The development of a performance-based adult high school diploma program at Linn Benton Community College : a case study

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