Index Catalog // ScholarsArchive@OSU

Phylogeny of the "Chaoboriform" genera

Creator:: Ogawa, Joshua R.
Abstract:: The phantom midges (Diptera: Chaoboridae) are a relatively small fly family composed of 50 extant species in six genera. Larvae are of interest to limnologists and ecologists because of their tolerance to toxicants, predatory avoidance strategies, and the role chaoborids play in zooplankton community dynamics. Relative to mosquitoes, systematists have...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Joshua R. Ogawa for the degree of Doctor of Philosophy in Zoology presented on June

Evidence of a trophic cascade among wolves, elk, and aspen in Yellowstone National Park, USA

Creator:: Halofsky, Joshua S.
Abstract:: According to general top-down trophic theory, in the presence of carnivores, herbivore behavior and/or densities could change and result in an overall decrease in herbivory on plant communities. In this dissertation, I examined the potential relationship between gray wolf (Canis lupus) presence and absence on elk (Cervus elaphus) herbivory of...
Resource Type:: Dissertation
Full Text:: National Park, USA by Joshua S. Halofsky A DISSERTATION submitted to Oregon State

Comparison of small-scale and field-scale saturated hydraulic conductivity : A tale of cores and drains

Creator:: Owens, Joshua M.
Abstract:: Saturated hydraulid conductivity (Ks) is a central soil physical property in determining water movement and contaminant transport through soils; hence modeling this system requires an accurate determination of K. Decimeter-scale KS measurements employing cores or infiltrometers are used frequently, but field-scale KS values are required to encompass the full range...
Resource Type:: Undergraduate Thesis

Low voltage techniques for pipelined analog-to-digital converters

Creator:: Carnes, Joshua Kenneth
Abstract:: To realize pipelined ADCs in deep-submicron processes, low voltage techniques must be developed to work around problems created by limited supply voltages such as the floating switch dead zone, reduced SNR, and reduced OpAmp performance. This thesis analyzes standard and low voltage design issues for pipelined ADCs and proposes a...
Resource Type:: Masters Thesis
Full Text:: for Pipelined Analog-to-Digital Converters by Joshua Kenneth Carnes A THESIS

Automating aquatic insect identification through pattern recognition

Creator:: Thomas, Joshua K.
Abstract:: Aquatic insect population counts can be a good indicator of the health, or water quality, of rivers and streams. Stoneflies (Plecoptera) are particularly susceptible to pollution in streams. However, today’s current method for obtaining these population counts requires biologists to examine individual specimens under a microscope for identification to the...
Resource Type:: Masters Thesis
Full Text:: Pattern Recognition by Joshua K. Thomas A THESIS submitted to Oregon

United States Forest Service, Deschutes National Forest, Bend, Oregon

Creator:: Harney, Joshua M.
Abstract:: On January 5, 2000, the National Institute for Occupational Safety and Health (NIOSH) received a request for a health hazard evaluation (HHE) from the United States Forest Service (USFS), Region 6, Office of Natural Resources. The request listed nausea, rashes, headaches, and dizziness as symptoms reported by Foresters who use...
Resource Type:: Technical Report

Investigation of hop downy mildew through association mapping and observations of the oospore

Creator:: Parker, Thomas B.
Abstract:: Hop downy mildew is a devastating disease affecting hop requiring expensive fungicide applications throughout the growing season. Plant resistance is highly desirable and theorized as being decidedly quantitative with dominance and epistasis involved in resistance. An association mapping approach using a mixed-model was used to identify AFLP markers associated with...
Resource Type:: Dissertation
Full Text:: from a QTL with a small effect that is tightly linked to a marker (Lander and Botstein 1989; Weller

Small broomrape (Orobanche minor) management using wheat (Triticum aestivum) as a false host

Creator:: Al-thahabi, Salam A.
Abstract:: Small broomrape (Orobanche minor) is an obligate, chlorophyll-lacking parasite that parasitizes red clover (Trifolium pratense) roots. This study was conducted to develop and implement an integrated, biologically based control program for small broomrape by using wheat as a false host to reduce the soil seed bank. The relationship between temperature...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Salam A. Al-thahabi for the degree of Doctor of Philosophy in Crop Science presented on

Phenotypic evolution as a response to thermal ecology in the ferocious waterbug Abedus herberti (Hemiptera: Belostomatidae)

Creator:: Pelegrin, Arthur Lomis
Abstract:: Over 150 years ago, C. Bergmann observed a within-species pattern of increasing body size as elevation and latitude increased. Bergmann’s data came from numerous endothermic taxa, but the pattern has since been documented among numerous poikilotherms and invertebrates. The ferocious waterbug Abedus herberti Hidalgo (Hemiptera: Belostomatidae) lives in isolated populations...
Resource Type:: Masters Thesis
Full Text:: Joshua Ogawa, who all helped me get up to speed as a graduate student and shared their insights into

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: __________________________________________________________________ Richard A

Energy - - a scientific, technical and socio-economic bibliography

Creator:: Hsieh, Kitty A.
Resource Type:: Book
Full Text:: Energy --A Scientific, Technical and Socio

Stream temperatures, flood impact, public health issues, and nutrient management : 1996 James A. Vomocil Water Quality Conference

Creator:: Vomocil, James A.
Abstract:: Published March 1997. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: Does not circulate GO P• 1996 James A. Vomocil Water Quality Conference Stream Temperatures, Flood

Energy reference sources

Creator:: Hsieh, Kitty A.
Abstract:: This bibliography is prepared for researchers in various fields of energy, teachers and students at the college level or above, and whoever helps the above people with their research or teaching. Emphasis is placed on users of the Oregon State University Library, hence a call number (in parenthesis) is given...
Resource Type:: Book
Full Text:: Acknowledgment What and How ..... " ............................. . I. General Energy Information A

Ultraviolet radiation as an environmental stressor of amphibians

Creator:: Bancroft, Betsy A.
Abstract:: My thesis explored the effects of and potential mediating mechanisms for an important environmental stressor, ultraviolet-B (UVB) radiation. UVB radiation has negative effects on organisms in both terrestrial and aquatic systems. I used meta-analysis to quantify the effects of UVB radiation on a diversity of aquatic organisms (Chapter 2). UVB...
Resource Type:: Dissertation
Full Text:: OF THE DISSERTATION OF Betsy A. Bancroft for the degree of Doctor of Philosophy in Zoology

Hydrology and delineation in four wetlands in the Oregon Cascades

Creator:: MacLeod, Norman A.
Abstract:: Four wetland sites were identified and delineated in Silver Falls State Park, Oregon using procedures outlined in the 1989 Federal Manual for the Identification and Delineation of Jurisdictional Wetlands and subsequently monitored for a ten month period. A network of 225 shallow (32") wells was installed throughout the sites to...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Norman A. MacLeod for the

OSU theses and dissertations : 1983-1992

Creator:: Glenn, Judith A.
Abstract:: Departmental and author index of Masters' theses and doctoral dissertations accepted by the Graduate School.
Resource Type:: Book
Full Text:: Theses and Dissertations 1983-1992 Oregon State University Compiled by Judith A. Glenn A Departmental

Factors associated with dusky Canada goose nesting and nest success on artificial nest islands of the western Copper River Delta

Creator:: Maggiulli, Nicole Marie
Abstract:: The population of dusky Canada geese (Branta canadensis occidentalis; hereafter, dusky geese) nesting on the western Copper River Delta (CRD) in south- central Alaska has been in decline since the late 1970s. In an effort to alleviate mammalian predation, increase nest success, and avoid a listing under the U.S. Endangered...
Resource Type:: Masters Thesis
Full Text:: avoid a listing under the U.S. Endangered Species Act, an artificial nest island (island) program was

Barriers to Community Involvement across Rural and Urban Communities

Creator:: Torgerson, Melissa
Abstract:: Many communities emphasize participatory involvement in local development or reinvention efforts. Recognizing barriers among specific groups could help community leaders identify what may be constraining underrepresented groups from joining in. Utilizing data from the Social Capital Benchmark Survey, this research examined identified “barriers” to community involvement among individuals in rural...
Resource Type:: Capstone Project
Full Text:: appreciation I have for my family--particularly my parents, my sister, Joshua, MacKenzie and Sean. I

Oregon biography index

Creator:: Brandt, Patricia A. and Guilford, Nancy
Abstract:: Oregon Biography Index is intended to serve primarily as a starting point in locating biographies of Oregonians. We have indexed 47 historical volumes which are either entirely devoted to biographies or have large self-contained biographical sections. The profiles in the books vary widely in accuracy and detail. Birth dates of...
Resource Type:: Book
Full Text:: INTRODUCTION Oregon Biography Index is intended to serve primarily as a starting point in locating

Habitat use by snag-associated species : a bibliography for species occurring in Oregon and Washington

Creator:: Weikel, Jennifer M., Hayes, John P. (John Parker), and Oregon State University. Forest Research Laboratory
Abstract:: Fifty-seven species of wildlife rely on or frequently use snags for breeding, roosting, or denning in Oregon and Washington. Several publications offer information on use of snags by wildlife, influence of management activities on snags and snag users, and approaches to managing snags to benefit wildlife. Because of the diverse...
Resource Type:: Technical Report
Full Text:: HABITAT USE BY SNAG-ASSOCIATED SPECIES: A BIBLIOGRAPHY FOR SPECIES OCCURRING IN OREGON AND WASHINGTON by

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