Index Catalog // ScholarsArchive@OSU

Effects of maternal age on reproductive success in black rockfish, Sebastes melanops

Creator:: Bobko, Stephen J.
Abstract:: From 1996 through 1998 I collected mature female black rockfish off Oregon and examined ovaries and otoliths to estimate weekly, age-specific larval production. In all reproductive seasons, older black rockfish extruded larvae earlier in the season, followed by progressively younger fish. Each year, beginning in May, I collected young-of-the-year (YOY)...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Stephen J. Bobko for the

Nutrient evaluation of secondary clarifier microbial paper sludge for ruminants

Creator:: Aseltine, Mark Stephen
Resource Type:: Dissertation
Full Text:: graduate study at Oregon State University, I am also indebted to Drs. Oldfield, Ralston, Bublitz and

A technology acquisition tool for key decision makers

Creator:: Self, Stephen
Abstract:: Objectives The purpose of this study was to investigate the need for a technology acquisition tool to be used in the capital purchasing process in health care organizations. Design Multi-method approach consisting of interviews of ten executives of health care organizations. A written survey was then mailed to Chief Executive...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Stephen Self for the degree of Doctor of Philosophy in

Community composition and activities of denitrifying bacteria in soils

Creator:: Rich, Jeremy J.
Abstract:: Few studies have directly compared denitrifying community composition and activities in soils by coupling molecular-genetic techniques and traditional measures of denitnfication. I investigated communities of denitrifying bacteria from adjacent meadow and forest soils in the Cascade Mountains, Oregon. A key gene in the denitrification pathway, N₂O reductase (nosZ), served as...
Resource Type:: Dissertation
Full Text:: : Stephen Giovannoni for giving career advice and influencing my Ph.D. instruction through two courses

Genetic patterns of demography and diversity in eastern North Pacific rockfishes (genus Sebastes)

Creator:: Johansson, Mattias L.
Abstract:: The 100 North Pacific rockfish species in the genus Sebastes are highly diverse. Rockfishes fertilize their eggs internally and release swimming larvae. Complex courting behaviors may allow female rockfish to be selective about their mates and may promote and maintain speciation. In this study, I applied genetic techniques to survey...
Resource Type:: Dissertation
Full Text:: , Botsford LW, Ralston SV, Largier JL, 1998. Meroplanktonic distribution and circulation in a coastal

Maternal effects, the environment, and age structure: A mechanistic fine-scale approach to describe a complex set of factors contributing to larval growth and survival

Creator:: Arnold, Linsey M.
Abstract:: The relationship between population characteristics and population productivity is fundamental to sustainable fisheries management, but predicting productivity remains a challenging task. Proposed mechanisms driving the variability in productivity at a given population size have included environmental and demographic factors related to the age structure of the population, but the broad-scale...
Resource Type:: Dissertation

Bioeconomic Simulation Modeling of Fisheries : Three Essays

Creator:: Cusack, Christopher Inju
Abstract:: Researchers rely on bioeconomic models to guide research and generate fishery management advice for commercial fisheries. Due partly to a paradigm shift towards ecosystem based fishery management, increasing complexity in the characteristics of the problems has meant that bioeconomic simulation models are becoming more prevalent in the fisheries literature. However...
Resource Type:: Dissertation
Full Text:: Ralston 2004). This occurs despite the aspiration of the analyst to realistically represent fishermen

The Roles of Dietary Nitrate in Bone and the Gut in an Ovarian Hormone-deficient Rodent Model

Creator:: Conley, Melissa N.
Abstract:: Osteoporosis is a common metabolic bone disease, affecting a third of women and a fifth of men over age 65. In the US, annual health care costs associated with osteoporosis are estimated to be over $20 billion. Osteoporosis is associated with increased fracture risk, which has been demonstrated to predict...
Resource Type:: Dissertation
Full Text:: high quality work, inspirational. I thank Stephen Lawson for his time reviewing my writing, teaching

John Wesley Powell : science and reform in a positive context

Creator:: Zernel, John Joseph, 1945-
Abstract:: John Wesley Powell worked actively for public land system reform while a director of geographical and geological surveys in the West from 1869 to 1894. Although this has won him acclaim as a conservationist, the basis of Powell's linkage of reform with scientific work is poorly understood. A study of...
Resource Type:: Dissertation
Full Text:: attitude that elements unrelated to science account for Powell's reform involvement. Stephen Pyne

Studies on the metabolism on n-propyl N, N-di-n-propyl thiolcarbamate in legumes

Creator:: Bourke, John Butts
Abstract:: The absorption, translocation and metabolism of a new herbicide, n-propyl-C¹⁴ N, N-di-n-propyl-thiolcarbamate (PDPC), were studied in both peanut and soybean plants. These studies were carried out on plants of different ages and treated at two rates of application. The residue content of the plants was also determined from germination to...
Resource Type:: Dissertation

ScholarsArchive@OSU

Effects of maternal age on reproductive success in black rockfish, Sebastes melanops

Nutrient evaluation of secondary clarifier microbial paper sludge for ruminants

A technology acquisition tool for key decision makers

Community composition and activities of denitrifying bacteria in soils

Genetic patterns of demography and diversity in eastern North Pacific rockfishes (genus Sebastes)

Maternal effects, the environment, and age structure: A mechanistic fine-scale approach to describe a complex set of factors contributing to larval growth and survival

Bioeconomic Simulation Modeling of Fisheries : Three Essays

The Roles of Dietary Nitrate in Bone and the Gut in an Ovarian Hormone-deficient Rodent Model

John Wesley Powell : science and reform in a positive context

Studies on the metabolism on n-propyl N, N-di-n-propyl thiolcarbamate in legumes

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