Index Catalog // ScholarsArchive@OSU

Post-eruption recovery and secondary production of grazing insects in two streams near Mt. St. Helens

Creator:: Meyerhoff, Richard Dietrich
Abstract:: The eruption of Mt. St. Helens provided the opportunity to study secondary production of grazing insects in the context of disturbance. Two stream sites were chosen that significantly differed in how their watersheds were impacted by the eruption. Clearwater Creek was catastrophically disturbed (physical alteration of habitat, loss of riparian...
Resource Type:: Dissertation
Full Text:: approved: NH. Anderson The eruption of Mt. St. Helens provided the opportunity to study secondary

Plasma carotenoids and retinol and dietary intake : association with in situ and invasive cervical carcinomas in Bangkok, Thailand

Creator:: Kaunda, Jean R.
Abstract:: There is a strong evidence that human papillomavirus (HPV) is the key causative agent of cervical cancer. However, the majority of women who are exposed to the oncogenic HPV do not develop invasive cervical cancer, suggesting that other factors could play a role in the cause and progression of cervical...
Resource Type:: Dissertation
Full Text:: Shannon for sharing this project with me. Despite the problems encountered during the project, I

Luminescent sulfides and solution-deposited oxide thin films

Creator:: Anderson, Jeremy T.
Abstract:: Solid state luminescent sulfides are prepared as powders in order to elucidate the relationship between structure and light emission. While the sulfides studied in this dissertation are known phosphors, materials are investigated in a variety of new ways. Elementary properties and structures of MgS are reviewed, and preparation of MgS...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Jeremy T. Anderson for the degree of Doctor of Philosophy in Chemistry presented on

Multi-scale relationships between aspen and birds in the northern Yellowstone ecosystem

Creator:: Hollenbeck, Jeff P., 1967-
Abstract:: I conducted a multi-scale evaluation of aspen – bird relationships in the northern ungulate winter range of the northern Yellowstone ecosystem during June 2001-03. Questions addressed were: (1) Does bird diversity increase with conifer presence in aspen stands? (2) Given known habitat selection cues, are migrating birds passively intercepted by...
Resource Type:: Dissertation
Full Text:: diversity (species richness or Shannon- Weiner index) on measures of habitat heterogeneity (ratio of

Functional relationships among vegetation, nocturnal insects, and bats in riparian areas of the Oregon Coast Range

Creator:: Ober, Holly K.
Abstract:: Vegetation provides food for many insects, and many insects serve as food for bats. We investigated the linkages among these three trophic levels in riparian areas throughout the Oregon Coast Range by examining the influence of vegetation cover, composition, and structure on the activity of nocturnal insects and bats, the...
Resource Type:: Dissertation
Full Text:: Chicago Press, Chicago, IL. Rice, J., B. W. Anderson, and R. D. Ohmart. 1984. Comparison of the

Indirect effects of fishing on predators and their prey

Creator:: Stallings, Christopher Derek
Abstract:: Predators are fundamentally important for regulating and driving prey population dynamics as well as structuring ecological communities. Over-exploitation of marine resources has caused dramatic depletions of predatory fish species and shifts in marine community composition, with attendant declines in productivity and diversity of marine ecosystems. Despite the important ramifications of...
Resource Type:: Dissertation
Full Text:: ) species richness, B) evenness, C) Shannon-Wiener composite diversity index, and D) rarefied richness at

Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability

Creator:: Chaer, Guilherme M.
Abstract:: The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to...
Resource Type:: Dissertation
Full Text:: (r) between richness (R ) and Shannon-Wiener index (H'), and scores from the NMS ordination (axis 1

Wide band gap semiconductors and insulators : synthesis, processing and characterization

Creator:: Hersh, Peter A.
Abstract:: The work presented here is focused on applying basic principles of solid-state chemistry to the study and development of new wide band-gap semiconductors and insulators for photovoltaic and electronic-device applications. Analysis of crystal structure, band structure, optical band gap, morphology and transport properties provides fundamental insight into materials performance as...
Resource Type:: Dissertation
Full Text:: Anderson, Jason Stowers, Heather Swinger-Platt, Joa-Young Jeong, Kai Jiang, Stephen Meyers, Sharon

Influences of high severity fire and postfire logging on avian and small mammal communities of the Siskiyou Mountains, Oregon, USA

Creator:: Fontaine, Joseph B.
Abstract:: High severity fire is a historical and integral disturbance process in coniferous forest types. Compounded disturbances such as multiple fires or post-disturbance management activities are increasingly common, but ecological responses are not well understood and may represent novel types of disturbances. I studied bird and small mammal communities in the...
Resource Type:: Dissertation
Full Text:: and Anderson 2002). Site level bird 16 density estimates were averaged within

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Creator:: Michalsen, Mandy M.
Abstract:: Metal and hydrogen ion acidity and extreme nitrate concentrations typical of Department of Energy (DOE) legacy waste sites pose formidable challenges to successful implementation of in situ bio-immobilization. Intermediate-scale (~ 2.5 m), flow through models of an in situ bio-barrier were constructed to investigate U and Tc removal from groundwater...
Resource Type:: Dissertation
Full Text:: ) reduction to observed U removal was not clear. Anderson et al. [20] conducted a natural gradient bio

ScholarsArchive@OSU

Post-eruption recovery and secondary production of grazing insects in two streams near Mt. St. Helens

Plasma carotenoids and retinol and dietary intake : association with in situ and invasive cervical carcinomas in Bangkok, Thailand

Luminescent sulfides and solution-deposited oxide thin films

Multi-scale relationships between aspen and birds in the northern Yellowstone ecosystem

Functional relationships among vegetation, nocturnal insects, and bats in riparian areas of the Oregon Coast Range

Indirect effects of fishing on predators and their prey

Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability

Wide band gap semiconductors and insulators : synthesis, processing and characterization

Influences of high severity fire and postfire logging on avian and small mammal communities of the Siskiyou Mountains, Oregon, USA

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

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