The agricultural sector is one of the largest contributors to global climate change but is also one of the most vulnerable to its impacts. Farmers are at increasing risk of livelihood loss, which produces risks for their physical and emotional wellbeing on a global scale. Swift and effective adaptation is...
Passive sampling devices (PSDs) were used to measure air vapor and water dissolved phase concentrations of polycyclic aromatic hydrocarbons (PAHs) and oxygenated PAHs (OPAHs) at two different environmentally contaminated sites. Environmental contaminates like PAHs and OPAHs are present in both the atmospheric and aqueous environmental compartments. It is known that...
Previous research has shown that using fine lightweight aggregate (FLWA) can be a promising strategy to mitigate alkali-silica reaction (ASR) in mortar and concrete. While several possible theories were proposed by researchers, discrepancies in testing methods, materials, and supporting evidence still exist. Therefore, this study was initiated. There are two...
A growing body of literature exists on how human population growth and changes in climatic factors influence the availability of water (Elliot et al. 2014, Prudhomme et al. 2014). These studies typically conclude that climate change is expected to have negative consequences on water availability, an effect that is magnified...
Central place foragers, such as breeding seabirds, need to commute between their nests and foraging grounds, thus close proximity of the breeding colony to productive oceanographic features might be beneficial for seabird reproduction. We tested this hypothesis by investigating the at-sea foraging and breeding behavior of thick-billed murres (Uria lomvia)...
As central-place foragers, seabirds from colonies located close to multiple and/or productive marine habitats might experience increased foraging opportunities and enhanced resilience to food shortages. We tested whether this hypothesis might explain divergent trends in 3 populations of black-legged kittiwakes Rissa tridactyla, a surface-feeding piscivore, in the eastern Bering Sea....
Widespread, rapid, drought-, and infestation-triggered tree mortality is emerging as a phenomenon affecting forests globally and may be linked to increasing temperatures and drought frequency and severity. The ecohydrological consequences of forest die-off have been little studied and remain highly uncertain. To explore this knowledge gap, we apply the extensive...
Objective of this study was to compare accuracy of
several travel cost methods, by employing Monte Carlo
simulations in the single site framework. Estimates from
five methods were compared to the "true" travel cost
coefficient and "true" consumer surplus. Each method was
ranked, using the root mean squared error (RMSE)...
The major focus of this research was to examine the factors, both
instructional factors and student factors, that influence student
gains in economic knowledge in economic education. This study sampled
twelfth grade students from randomly selected high schools in the
Williamette Valley of Oregon. The stepwise regression analysis was
used...
Species interactions and their effect on the use of habitat by benthic fishes were examined in a guild composed of Cottus perplexus, C. rhotheus, and C. beldingi in the Marys River above Philomath, Oregon, and in a constant environment provided by an artificial stream. In the Marys River system, the...
Research has established that poor outcomes are the future for those without a
high school diploma--yet students continue to drop out and become members of
that population. The purpose of this qualitative study was to investigate the
experiences and perceptions of individuals who did not complete high school
within the...
CALTRANS does not currently allow Portland-Limestone Cements (PLC) to replace Ordinary Portland Cement (OPC) in concrete. PLC has been proposed for consideration in CALTRANS specifications due to potential benefits in reducing greenhouse gas (GHG) emissions. This report outlines a comprehensive plan to provide both experimental and computational analysis results to...
A major achievement in research supported by the Kluane Lake Research Station was the recovery, in 2001–02, of a suite of cores from the icefields of the central St. Elias Mountains, Yukon, by teams of researchers from Canada, the United States, and Japan. This project led to the development of...
For Pacific salmon, the evolution of local adaptations depends upon the species' propensity to return, or "home", to natal streams at time of reproduction. Pacific salmon use olfactory cues to guide homing behavior, yet little is known about the genetics of olfaction in salmon. In this study, I use putatively...
The lack of information regarding the inheritance of the duration and rate of
grain filling, and the possible relationship between grain fill and grain protein
content in wheat prompted this study.
Early maturing Chinese cultivars, 'AI Feng 2' and 'CB 83-52', and late
maturing cultivars adapted to Oregon, 'Stephens' and...
Pollution by pesticides is a ubiquitous concern for wildlife. The effects of
pesticides are especially concerning in aquatic environments, which are particularly
vulnerable as they have several exposure routes for the influx of chemicals. These
effects are of particular concern as biodiversity loss reaches unprecedented rates. This
includes recent declines...
Shallow lakes exist in either a clear or turbid state, with the clear state characterized by an abundance of aquatic macrophytes, diverse aquatic biota, low water column nutrients and phytoplankton biomass, whereas the turbid state is characterized by the opposite. These two distinct states are maintained by reinforcing (positive) feedback...
During the first full school year of the Covid-19 pandemic, two central contexts for adolescent development—home and school—changed utterly. In Oregon, most middle- and high schoolers attended school entirely remotely from the beginning of the pandemic, in March, 2020, through the end of April, 2021, removing both the supports available...
Forests play an integral role in the global carbon cycle, regulating the atmospheric CO₂ concentration by sequestering nearly one third of anthropogenic carbon emissions and storing carbon for centuries. Forest ecosystems are integrated into the culture, ecology, and economy of western North America, supporting wildlife habitat, local economies, recreation, and...
Recognizing the importance of methane hydrate research and the need for a coordinated effort, the United States Congress enacted the Methane Hydrate Research and Development Act of 2000. At the same time, the Ministry of International Trade and Industry in Japan launched a research program to develop plans for a...
Conservation of wildlife depends on an understanding of the interactions between animal movements and key landscape factors. Habitat requirements of wide-ranging species often vary spatially, but quantitative assessment of variation among replicated studies at multiple sites is rare. We investigated patterns of space use for 10 populations of two closely...
For the past six years in which overwintering mortality of honey bee colonies has been surveyed in the USA, estimates of colony loss have
fluctuated around one-third of the national population. Here we report on the losses for the 2012-2013 seasons. We collected data from 6,482
US beekeepers (6,114 backyard,...
It is a golden age for animal movement studies and so an opportune time to assess priorities for future work. We assembled 40 experts to identify key questions in this field, focussing on marine megafauna, which include a broad range of birds, mammals, reptiles, and fish. Research on these taxa...
Consistent with its charge under Oregon House Bill 3543, the Oregon Climate Change Research Institute (OCCRI) conducts a biennial assessment of the state of climate change science, including biological, physical, and social science, as it relates to Oregon and the likely effects of climate change on Oregon. This fifth Oregon...
Keywords: Steve Strauss, Rick Strachan, Starker Forests, Wheeler Wood Composites Laboratory, Barbara Middleton, Joan Davies, Lisa Mattes, Larry Chapman, Iwan Ho, Jim WIlson, John Sessions, Brian Kramer, Mike Newton, Faye Stewart, Norma Erickson, Paul Adams, Gordan A. and Priscilla E. Duncan, Jim Trappe, Corey Arentz, Wang Zheng-Qi, Loran L. ("Stub")...
This study investigated the effect of cooking on the
neutral detergent fiber (NDF) content of cauliflower and
carrots. For each replication the vegetable was divided
in half to serve as its own control. One half was used
raw and the other half was cooked in 60 ml of distilled
water...
The 8th Annual Oregon Coastal Caucus Economic Summit was held August 21-22, 2019 in Florence, Oregon. Over 600 people attended the event which promotes the economic development of rural coastal regions, promotes relationships across regional and political spectrums, and pursues a balanced approach that can unite all Oregonians. Oregon Sea...
The distribution of particles in the Eastern Pacific Ocean was
investigated from 2 January to 14 February, l969, on the YALOC-69
cruise of Oregon State University. The size distributions were well
fitted by the two-parameter Weibull distribution function, with a
predominant number of them nearly exponential in distributional
shape. Although...
Archival information about fish and water in the Umpqua Basin can be found in reports housed in disparate locations (e.g., offices of various State and Federal agencies and local organizations). A comprehensive bibliography of grey literature, important or uncataloged reports, and published reports is one means of recording what research...
This paper aims to reveal consumers’ preferences for quality graded fish products based upon existing data on first-hand sales in Denmark. The data represents the value of fish for consumption as a non-differentiated private good.
The objective is to measure the welfare gains to society of an increase in “quality”...
The South Pole ice core (SPC14), drilled in the field seasons of 2014/2015 and 2015/2016, is an intermediate length, 1,751-m ice core which preserves a 54,000-year record of past climate and atmospheric composition. The SPC14 ice core adds to the spatial grid of ice cores in Antarctica extending into the...
This thesis seeks to explain how Lord George Gordon
Byron achieves catharsis through the writing of his truth
in Don Juan. In the poem the narrator expresses Byron's
innermost emotion while at the same time the protagonist,
Juan, relates to readers on a more conscious level. The
ability that Byron...
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...
In recent years, depletion of sands in the nearshore environment along the northern Oregon and southwest Washington coasts has been documented. This erosion raises concerns about protection of economic and ecological resources in the area. The Columbia River Nearshore Beneficial Use Project was initiated to engage public and private sector...
Full Text:
to about River Mile 17
(McCabe et al. 1985, 1986; McCabe and McConnell 1989).
In estimating the
Since the mid-nineteenth century, different waves of feminism have shaped a more fair, equitable world for women. Today, the fourth wave of feminism brings about a new initiative that focuses on menstruation. This traditionally taboo topic has formed failing policies that neglect the care, empowerment, and importance of women’s bodies,...
Published March 1977. 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
Interpretation of ice core trace gas records depends on an accurate understanding of the
processes that smooth the atmospheric signal in the firn. Much work has been done to understand the
processes affecting air transport in the open pores of the firn, but a paucity of data from air trapped...
Full Text:
other compounds [McConnell,
2002], and a laser-based atmospheric
analyzer for measuring black carbon (BC
Diversity literary awards and other sources were used to create a list of high-quality titles written by and about underrepresented groups. This list was used to assess the diversity and inclusiveness of the library collections of a land-grant university. Gaps in the collection and acquisition processes were identified and will...
This thesis reports a portion of a general ecological study of
a stream under conditions of controlled flow and low levels of organic
enrichment. It is concerned with the effects of experimental variations
of light intensity and concentration of soluble organic enrichment
imposed on seasonal variations of temperature and total...
Traditionally, fish has been considered as an item for direct or indirect human use (food, fertilizer, fishmeal and so on). Recently increasing number of studies on anadromous salmon in North America and Japan, however, suggest that fish could also support biodiversity. Marine-derived nutrients (MDN) are important contributors to maintain or...
Background: Prenatal care (PNC) is an important preventive health service that can influence the health of the four million women who give birth annually in the United States, and the health their infants. Despite efforts to increase women’s access to PNC services, significant disparities in PNC utilization and maternal/child health...
The atmospheric transport and deposition of semi-volatile organic compounds (SOCs), including current and historic use pesticides, polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), to mountain ecosystems may result in the exposure of tadpoles to these SOCs. This exposure has been implicated in amphibian population declines in California. Tadpoles encounter...
The introduction of Individual Transferable Quota (ITQ) fisheries management is controversial as it
typically results in fewer active vessels, fewer vessel jobs, and the remaining vessel crew earning a lower
share of vessel revenues with capital interests, including the new interest "quota ownership", increasing
their revenue share. However, the move...
The rise of digital streaming has largely impacted the way the average listener consumes music. Consequentially, while the role of album art has evolved to meet the changes in music technology, it is hard to measure the effect of digital streaming on modern album art. This research seeks to determine...
The fermentation of honey-based musts has been a feature of civilization for millennia. Typically comprised of 75-90% (w/w) simple (i.e. fermentable) sugars, the glucose and fructose present are readily fermented by either pitched or adventitious micro-organisms. Nevertheless, despite its venerable heritage, honey-based fermentations are prone to inconsistency, and it is...
Methane is a product of biogeochemical processes which respond to changes in climate. The history of atmospheric methane is recorded by ice cores providing insight into past changes in these biogeochemical processes. This dissertation is comprised of three studies which focus on centennial- and millenial-scale variability of methane from ice...
Published 1956. 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
The abolition of the Atlantic slave trade was a long struggle in
British Parliament between the slave trade defenders and the abolitionists.
The Act of 1807 officially abolished the Atlantic slave trade, eighteen years
after the initial abolition proposal to Parliament. William Wilberforce was a
member of a committee that...
This thesis examines how changes made to the Oregon Health Plan (OHP) in 2003 impacts those now utilizing the emergency room (ER) for primary health care. This thesis also examines how these changes impact staff members working in the ER of Salem Hospital. Through the utilization of qualitative research methods,...
Wetlands play an important role in our social and economic well being. Many
services wetlands provide, such as wildlife habitat, recreation, and aesthetics, are
collective goods. Because these services are not represented in a market, an over supply
of wetlands converted to other uses and an under supply of protected...
Despite several decades of research developments, the survey-based contingent
valuation (CV) method remains one of the most controversial topics in environmental
economics. As the procedure matures and more applied studies are completed, there
is increasing pressure to make the results policy relevant. This research is composed
of three distinct yet...
Mechanisms by which plant organs accumulate
photoassimilate are important in determining final sink size
and may involve invertase activity. Because strawberry
fruit are strong sinks for sugars, changes in invertase
levels during development and mechanisms of sugar uptake
within the fruit were examined.
Fruit from greenhouse-grown, day-neutral strawberries,
(Fragaria X...
In this thesis, I examine composition scholarship on the intersections of religious faith and writing pedagogy over the past twenty years, tracing the origins of compositionists' discomfort with religion and focusing on pedagogical approaches for working with religiously-committed students. In particular, I emphasize the way in which these approaches are...
Samples of benthic algae were collected from the Metolius River
of central Oregon at two-week intervals between April 15, 1967 and
March 9, 1968. Species of filamentous algae and diatoms present
were recorded for every sampling station on each sampling date.
Permanent mounts of diatom frustules were prepared.
This sampling...
This study focused on composition teachers in elementary and
secondary schools who researched their own teaching practices. Specifically, it
examined political implications of their work within the larger context of the
education hierarchy. Central to this examination were teacher-researcher (t-r)
perceptions of and interactions with other members of the education...
Drawing on Deborah Brandt’s “literacy sponsorship,” this thesis examines ways English language learners (ELLs) in the Corvallis Multicultural Literacy Center (CMLC) act as literacy sponsors, sharing their expertise in language, textiles, and cooking, based on nine in-depth interviews with ELLs at the center. The findings of this thesis are presented...
Oregon's estuaries are important ecosystems for scientific study. Consequently, knowledge of what research has been conducted helps us identify benchmarks and plan new projects. A comprehensive bibliography of published research, technical reports, local documents, and data sets is one means of recording this knowledge. For these reasons, the Guin Library...
A quality problem that frequently occurs with frozen green beans
is the sloughing of the skin (epidermal tissues) of the cooked, ready-to-
serve bean pods. It was found that by giving the beans a pre-blanch
(relatively mild heat treatment) prior to the blanch treatment normally
used for frozen green beans,...
A free-air gravity anomaly map of the continental margin of
Peru between 12° and 18° S. Lat. shows a -110 to -220 mgl anomaly
associated with the Peru-Chile Trench, a -60 mgl anomaly over the
Pisco Basin on the continental shelf, and -120 mgl anomaly over the
Mollendo (or Arequipa)...
In this study, which forms part of a set of five case studies that cover natural lands in Florida, Maine, Nebraska, New Mexico and Oregon, we develop estimates of the economic value of several human uses supported by Yaquina Bay, a 29 square-mile area in coastal central Oregon that has...
Ice cores are considered the gold standard for recording past climate and biogeochemical changes. However, gas records derived from ice core analysis have until now been largely limited to centennial and longer timescales because sufficient temporal resolution and analytical precision have been lacking, except during rare times when atmospheric concentrations...
In recent years, model-free Deep Reinforcement Learning (RL) has become an increasingly popular alternative to more traditional model-based or optimization-based control methods in solving robotic legged locomotion. However, deploying RL in the real world can be a significant undertaking. Constructing reward functions which compel controllers to learn the desired behavior...
My work has focused on investigating synthetic organic reactions using applied computational methods. Non-covalent interactions are critical to catalysis, mechanism, and stereoselectivity, with the most prominent interaction for isothioureas being the S···O contact between the catalyst sulfur atom and the oxygen of the acyl group. A comprehensive joint experimental and...