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Effects of Tetranychus urticae Koch feeding injury on physiological processes in Mentha piperita L.

Creator:: DeAngelis, Jack D.
Abstract:: Studies were conducted to examine the effects of feeding injury by the twospotted spider mite (Tetranychus urticae Koch) on physiological processes of its host plant, peppermint (Mentha piperita L.). Aspects of mite-induced host plant physiological stress that were studied included: 1) effects of injury on plant-water relations; 2) photosynthesis and...
Resource Type:: Dissertation
Full Text:: Physiological Processes in Mentha piperita L. AN ABSTRACT OF THE THESIS OF Jack Douglas DeAngelis for the

The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Creator:: Davis, Kimberly J.
Abstract:: Many studies suggest that weedy plant species are most successful when soil nitrogen in abundant. Consequently, I used soil nitrogen manipulations to determine if altering nitrogen would affect the establishment of both weedy and native plant species in a western Oregon wetland prairie. In two studies, we added carbon amendments...
Resource Type:: Dissertation
Full Text:: members, Kate Lajtha, Don Zobel, David Myrold, Jeff Steiner, and Jack DeAngelis for their valuable

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

Creator:: Pratt, Paul D.
Abstract:: We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or...
Resource Type:: Dissertation
Full Text:: committee members, Jack DeAngelis, Jim Green, Marcos Kogan and William Proebsting were always generous

Deposition and persistence of polynuclear aromatic hydrocarbons after slash burning clear-cut sites in Oregon

Creator:: Sullivan, Timothy Joseph
Abstract:: Research has been completed which identifies qualitatively and quantitatively the deposition, persistence and fate of polynuclear aromatic hydrocarbons (PNAH) on burned clear-cut sites in Oregon. Eight PNAH were identified and quantified in post-burn litter samples taken from four slash-burned sites. Deposition of lower molecular weight, 3-4 ring compounds was considerably...
Resource Type:: Dissertation
Full Text:: . Max Deinzer, Don Griffin, Jack Lamberton, and Lucia Durand, provided helpful criticisms, instruction

Effects of the garden symphylan, Scutigerella immaculata Newport, on physiological processes of bush snap bean, Phaseolus vulgaris L.

Creator:: Eltoum, Elameen M. A.
Resource Type:: Dissertation
Full Text:: thanks goes to Dr. Jack D. DeAngelis, for his help, support, and extended supply of valuable informations

Biological control of Tetranychus urticae Koch in hops by phytoseiid mites : feasibility, spatial aspects of interactions, and management

Creator:: Strong, Willard Billings, 1959-
Resource Type:: Dissertation
Full Text:: the path to becoming a scientific researcher. My other committee members, Phil Rossignol, Jack

A simulation model of wood dynamics in Pacific Northwest streams

Creator:: Meleason, Mark Alan
Abstract:: Conceptually, the dynamics of wood in streams can be viewed in terms of input and in-channel processes. Input processes are associated with both the riparian (tree fall, bank cutting, windthrow) and upslope forests (mass failures). In-channel processes include log breakage, movement, and decomposition. A mechanistic view of these processes is...
Resource Type:: Dissertation
Full Text:: this project in many ways: Jack Burgess, Aaron Drew, Lou Reynolds, Edin Zulic, Judy Li, Steve Acker

Hydrography and heat flux in hydrothermal regions

Creator:: Wilson, Cara, 1967-
Resource Type:: Dissertation
Full Text:: France once again. I'd like to thank my parents, Marjorie and Jack Wilson, for their support over the

Analysis of Carbon-14 Transport from a Contaminated Groundwater Source

Creator:: Napier, Jonathan Bamberger
Abstract:: Radioecology observes the movement of radioactive isotopes throughout the environment. For radioecology, locations of study are limited to areas accidentally contaminated from a number of sources. The Chalk River Laboratories of Atomic Energy of Canada Limited have stored low level waste since the mid 1940s. In certain instances, the wastes...
Resource Type:: Dissertation

Evaluation of behavioral response of Aedes aegypti mosquitoes to repellents using a novel olfactometer

Creator:: Doğan, Elif Barc̦in
Abstract:: Mosquito-borne pathogens are the cause of important, often deadly diseases worldwide; and, use of repellents is one of the components of mosquito control programs. The most effective mosquito repellent is N,N-dimethyl-m-toluamide, known as DEET. Speculation on the adverse effects of DEET have been on the rise since the 1980s, and...
Resource Type:: Dissertation
Full Text:: expectations. I thank Drs. James W. Ayres, Jack DeAngelis and Phil Rossignol for our discussions and their

ScholarsArchive@OSU

Effects of Tetranychus urticae Koch feeding injury on physiological processes in Mentha piperita L.

The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

Deposition and persistence of polynuclear aromatic hydrocarbons after slash burning clear-cut sites in Oregon

Effects of the garden symphylan, Scutigerella immaculata Newport, on physiological processes of bush snap bean, Phaseolus vulgaris L.

Biological control of Tetranychus urticae Koch in hops by phytoseiid mites : feasibility, spatial aspects of interactions, and management

A simulation model of wood dynamics in Pacific Northwest streams

Hydrography and heat flux in hydrothermal regions

Analysis of Carbon-14 Transport from a Contaminated Groundwater Source

Evaluation of behavioral response of Aedes aegypti mosquitoes to repellents using a novel olfactometer

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