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:: Brower, Peter Cranston, Phil Rossignol and Mark Christensen. Darlene and Andy, thank you for the

Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel

Creator:: Fast, Cody P.
Abstract:: Variations in heat treatments have significant effects on the microstructure of tool steels. For CPM-M4 tool steel, the changes in microstructure and mechanical properties were observed based off of variations in temperature. Five heat treatments with constant exposure time and variable austenitizing and tempering temperatures were performed on samples of...
Resource Type:: Masters Thesis
Full Text:: was instrumental. I wish to thank Dr. Peter Eschbach who provided invaluable assistance in my EBSD

Progress in the Search for Early Sites in the Lower Salmon River Canyon, Idaho: A Case Study in Geoarchaeological Prospection

Creator:: Lancaster, JD L.
Abstract:: The search for and discovery of early archaeological sites is an inherently geoarchaeological problem. Archaeological sites of late Pleistocene-age are known to be located in the Intermountain West, however, the record of these early sites remains limited to only a few examples. In the lower Salmon River canyon (LSRC), the...
Resource Type:: Masters Thesis
Full Text:: through this process. It has been an amazing experience being his student. In addition, Peter Clark

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

Creator:: Isaacson, Dennis
Abstract:: The dynamics of a field population of the cinnabar moth, Tyria jacobaeae L., were studied near Jordan, Linn County, Oregon. In both 1970 and 1971 larval populations were so large that all foliage of the host weed, tansy ragwort, Senecio jacobaea L., was consumed. The ensuing starvation accounted for the...
Resource Type:: Masters Thesis
Full Text:: criticisms during the writing of this thesis. Dr. Peter S. Dawson, Assistant Professor of Zoology, Oregon

Public perspectives on forest ecosystem health : knowledge, preferences, and opinions from urban and rural communities throughout the Pacific Northwest

Creator:: Wilton, James Jared
Abstract:: Changes in forest ecosystem conditions in the region have prompted federal resource agencies to target the health of ecosystems in an effort to learn more about cause and effect relationships, develop plans for restoring healthy forest conditions, and communicate with citizens about treatment alternatives and potential outcomes. Because of the...
Resource Type:: Masters Thesis

Observations and Modeling of Shear Reduction and Sediment Flux within Vegetated Canopies on Managed Coastal Dunes

Creator:: Dickey, John
Abstract:: Wind flow on vegetated coastal foredunes adapts to the local canopy drag, resulting in spatial gradients in bed shear stresses which contribute to the formation of localized bedforms (e.g., nebkha, shadow dunes). Numerous morphological properties of the plants, including canopy height and density, affect the wind flow dynamics and therefore...
Resource Type:: Masters Thesis
Full Text:: Field Experiment results (red circles). Over the range of densities used in Hesp et al.’s data set our

Influence of host anemia on blood-feeding rate and egg production of Aedes aegypti (L.) (Diptera : Culicidae)

Creator:: Shieh, Jong-Neng
Abstract:: I tested a theoretical model proposing that anemia favors transmission of blood-borne parasites to vectors by accelerating the blood-feeding rate. Using Aedes aegypti, the yellow fever mosquito, initially, I was not able to confirm this phenomenon either in an artificial or a live system; anemia did not correlate with blood-feeding...
Resource Type:: Masters Thesis
Full Text:: . Berg, Dr. John D. Lattin, Dr. Peter S. Dawson, and Dr. Philippe A. Rossignol, made an important

Epichloë typhina (fungus) - Botanophila lobata (fly) interaction : an invasive "pollinator" system in its introduced range in western Oregon

Creator:: Kaser, Joseph M.
Abstract:: Epichloë typhina (Ascomycetes: Clavicipitaceae) is an endophytic fungus that infects perennial Pooid grasses and is the causal agent of choke disease. It is endemic to Europe and was inadvertently introduced into orchardgrass seed production fields in western Oregon. Choke disease, which was first recorded in Oregon in 1996, currently infects...
Resource Type:: Masters Thesis
Full Text:: . I thank my graduate committee members, Dr. Elizabeth Borer, Dr. Peter McEvoy and Dr. Patricia Muir

A study of the sodium + potassium-activated adenosinetriphosphatase in brine shrimp Artemia salina, Nauplii

Creator:: Peterson, Gary Lee
Resource Type:: Dissertation
Full Text:: molecular weights of 101,000 and 95,200. Both contain the catalytic subunit(s) and stain positive with PAS

Phenotypic variation in the sexual attractiveness pheromone of the red-sided garter snake, Thamnophis sirtalis parietalis

Creator:: LeMaster, Michael P.
Abstract:: Pheromones are chemical cues produced by organisms that affect the behavior and/or physiology of conspecifics. The orchestration of reproductive behaviors in many animals depends on the expression of sex pheromones. In insects, intraspecific variation in sex pheromone expression is commonly observed and often influences social interactions between individuals. To what...
Resource Type:: Dissertation
Full Text:: . Houck, Michael S. Blouin, Martin S. Fitzpatrick, David E. Williams, and Peter B. McEvoy for the

ScholarsArchive@OSU

Phylogeny of the "Chaoboriform" genera

Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel

Progress in the Search for Early Sites in the Lower Salmon River Canyon, Idaho: A Case Study in Geoarchaeological Prospection

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

Public perspectives on forest ecosystem health : knowledge, preferences, and opinions from urban and rural communities throughout the Pacific Northwest

Observations and Modeling of Shear Reduction and Sediment Flux within Vegetated Canopies on Managed Coastal Dunes

Influence of host anemia on blood-feeding rate and egg production of Aedes aegypti (L.) (Diptera : Culicidae)

Epichloë typhina (fungus) - Botanophila lobata (fly) interaction : an invasive "pollinator" system in its introduced range in western Oregon

A study of the sodium + potassium-activated adenosinetriphosphatase in brine shrimp Artemia salina, Nauplii

Phenotypic variation in the sexual attractiveness pheromone of the red-sided garter snake, Thamnophis sirtalis parietalis

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