The Willamette River Greenway Program was created by an act of the Oregon Legislature in 1968 and modified by a second act in 1973.
The purpose of the program was to protect the natural environment of the river from approximately the foot of the Cascade Range near Eugene, north to...
Infestation by onion thrips, Thrips tabaci Lindeman, was determined on transplants of onion (Allium cepa L.) received in Colorado during March and April from out-of-state sources (Imperial Valley, CA; near Phoenix, AZ; and southern Texas) during 2004 to 2008. In the 5 years of the study, 50 to 100% of...
Stream water temperature (tₛ) is a critical water quality parameter for aquatic ecosystems. However, tₛ records are sparse or nonexistent in many river systems. In this work, we present an empirical model to predict tₛ at the site scale across the USA. The model, derived using data from 171 reference...
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...
Generalizability theory was used to examine sources of variability in daily physical activity levels of secondary students with and without developmental disabilities (DD), and to determine minimum number of days required for monitoring their typical physical activity levels. Sixteen participants with DD (M = 16.7 years, SD = 2.7 years),...
Conservation banking is a market-based instrument and conservation tool designed to provide compensatory mitigation for impacts to endangered species. These banks provide both ecological and economic benefits, however their ability to continue providing these benefits is threatened by climate change. The motivational factors behind the decisions to establish a conservation...
This thesis explores the experiences of ten asexual and aromantic college students at Oregon State University and the strategies they used to navigate their sexualized and romanticized campuses. The questions that guided this research were about belonging, resilience, kinship, and worldview. Did they feel they belonged to anyone or mattered...
I evaluated the use of various wetlands by wintering ducks in
the Tulare Lake Basin (TLB), California, during October 1982 - April
1983 and September 1983 - March 1984. Aerial waterfowl counts of the
TLB were used to document spacial use patterns by ducks. Ground
surveys on evaporation ponds in...
The dynamic watershed acid-base chemistry model of acidification of groundwater in catchments (MAGIC) was used to calculate target loads (TLs) of atmospheric sulfur and nitrogen deposition expected to be protective of aquatic health in lakes in the Adirondack ecoregion of New York. The TLs were calculated for two future dates...
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...
This dissertation consists of a set of three manuscripts exploring features of effective professional development (PD) for science teacher educators. Literature about context-specific PD for science teacher educators is sparse. The first manuscript, a literature review, outlines theoretical lenses through which PD can be understood, the features of effective PD,...
Biological interrelationships between the ambrosia beetle
Xyleborus dispar (F.) (Coleoptera:Scolytidae) with its symbiotic
fungus, Ambrosiella hartigii Batra (Fungi Imperfecti) were investigated
in western Oregon.
Postdiapause adults of X. dispar collected in March through
June with rotary nets, and excised from overwintered and newly
attacked host material, produced a single generation...
This study examines how three measures of child health: overall health status, access to health insurance and dental checkup status, predict the likelihood of a child experiencing higher number of absences in children eligible to attend Head Start, and how that association is influenced by the presence of a depressed...
Understanding the movement behavior and foraging strategies of individuals across multiple spatial and temporal scales is essential not only for understanding the biological requirements of individuals but also for linking individual strategies to population level effects. Glacial fjords scattered throughout south-central and southeastern Alaska host some of the largest seasonal...
Aerosol concentrations and 3-D winds were measured from 9 to 25 September 2007, above a pine forest in California. The measurements were combined using the eddy covariance (EC) technique to determine aerosol eddy fluxes as a function of particle diameter within the accumulation mode size range (0.25 μm≤D[subscript]p≤1 μm here)....
Metacercariae of an unidentified species of Apophallus Luhe, 1909 are associated with overwinter mortality in coho salmon, Oncorhynchus kisutch (Walbaum, 1792), in the West Fork Smith River, Oregon. We infected chicks with these metacercariae in order to identify the species. The average size of adult worms was 197 x 57...
Oceanic iron (Fe) fertilization experiments have advanced the understanding of how Fe regulates biological productivity and air–sea carbon dioxide (CO₂) exchange. However, little is known about the production and consumption of halocarbons and other gases as a result of Fe addition. Besides metabolizing inorganic carbon, marine microorganisms produce and consume...
Research activities in the post-IBP phase of the Biome program prior to July 1975 were reported in Internal Report 162. Summaries of research and synthesis activities from July 1975 to August 1976 are presented here. The reports are arranged in the following order: Analysis of individual terrestrial ecosystems, which has...
Epidemiological research on HIV/AIDS seeks to determine at-risk populations not reached by current care. In the forty years since the AIDS epidemic began, transgender people were only recently deemed “at-risk” by the CDC and more action was taken to study them. Most current research centers on transgender women, with transgender...
Despite a large and multifaceted effort to understand the vast landscape of phenotypic data, their current form inhibits productive data analysis. The lack of a community-wide, consensus-based, human- and machine-interpretable language for describing phenotypes and their genomic and environmental contexts is perhaps the most pressing scientific bottleneck to integration across...
The studies described in this thesis were motivated by ongoing efforts to develop lignocellulosic biomass as an efficient and practical source of renewable energy. Enormous problems complicate these efforts to reduce reliance on greenhouse gas-generating fossil fuels. Simply obtaining the fermentable sugars available in the cellulose and hemicellulose components of...
Bioremediation in the vadose zone is unpredictable because of poor understanding of factors influencing microbial growth in this environment. A lab-scale experimental system was developed to examine, noninvasively, interactions between microbial growth, water flow, and solute transport in unsaturated porous media. Measurements of microbial colonization, and its impact on hydrology,...
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...
The Pacific Northwest (Oregon and Washington in the United States and British Columbia in Canada) is one of the major producers of red raspberry (Rubus idaeus L.) and blueberry (Vaccinium corymbosum L.) in the world. The expansion of growing area with these crops has resulted in the emergence of new...
Excess fatty acids and sterols are stored as triacylglycerols and sterol esters in
specialized cellular organelles, called lipid droplets. Understanding what determines the cellular
amount of neutral lipids and their packaging into lipid droplets is of fundamental and
applied interest. Using two species of fission yeast, we show that cycling...
The quality of wine is highly influenced by the weather.
Temperature, solar radiation and humidity influence the
formation and concentration of aroma-active compounds and
aroma-active precursors in the grapes. Pinot noir grapes require
a slow ripening, under cool temperatures, in order to achieve
their fullest flavor. The main objective of...
Lithospheric cracking by remotely applied stresses or thermoelastic stresses has been suggested to be the mechanism responsible for the formation of intraplate volcanic ridges in the Pacific that clearly do not form above fixed hot spots. As part of the Gravity Lineations Intraplate Melting Petrology and Seismic Expedition (GLIMPSE) project...
Several laboratories have shown that the VV
replication cycle is dependent on the host cell nucleus.
The basic biological observation is that if the host cell
nucleus is physically removed by cytochalasin B-mediated
enucleation, functionally inactivated by UV-irradiation, or
selectively blocked with a-amanitin, the results are the
same: W is...
A quarter of all species around the globe are threatened with extinction; this article reviews research in economics on how best to counter those threats. Normative research has developed useful tools for cost-effectively choosing areas of habitat to protect. Such work has also designed working-lands contracts that can induce efficient...
Physical, chemical and sensory attributes were
examined on canned green beans (Oregon 1604) of sieve sizes
3 & 4 and 5 & 6 after one and three months of storage at
room temperature (RT). The green beans subjected to
different pre-blanch conditions in water (T1t1: 160°F - 30
min.; T1t2:...
Proteases present in shrimp processing waste are factors in the
technology of shrimp. The distribution of proteolytic activity in
shrimp parts was determined using hemoglobin and casein as substrates. The effects of various parameters upon activity of proteases
in the inedible portion were determined using muscle protein as a
substrate....
Shallow foundations are extensively used to support structures of all sizes and derive their support from near surface soils. Thus, they are typically embedded up to a few meters into the soil profile. Designers of shallow foundations are required to meet two limit states: overall failure of the soil beneath...
To examine the potential for exercise to build bone mass during growth, objectives of this dissertation included: 1) determine the effects of 7 months of jumping followed by 7 months of detraining on hip and spine bone mass in the prepubertal children; 2) determine variables that best predict bone mineral...
The proposed construction of a four lane road, the
Salem Parkway, was evaluated regarding the potential environmental
impacts its location would have upon biotic resources and water
quality. Due to existing commitment of the study area to urbanization
and agriculture, only limited environmental sensitivity was observed
overall. It was found...
Variation in cheese quality due to geographic location is important to cheese producers, consumers, and retailers on a global level. Understanding the impacts of geographic location of cheese plants may be useful to businesses for marketing, cost reduction, and quality improvement. Many aspects of variation due to geography have been...
From 27 June to 3 September 1999, CO2 fluxes from a 5-year-old, 84.15-ha vegetated clearcut in sub-boreal British Columbia were measured using a Bowen ratio energy balance (BREB) system and a second approach (the component model) that was based on scaled up CO2-flux measurements from belowground and plants (spruce seedlings...
What constitutes a quality solution to an authentic task from industry? This study seeks to address this question through the examination of two expert solutions to an authentic engineering task used in the Chemical, Biological and Environmental Engineering curriculum at Oregon State University. The two solutions were generated by two...
Published January 1968. 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 alien abduction phenomenon has garnered considerable media attention in the last fifteen years, including many representations in books, film, and television. An overview of significant abduction literature is presented. Contrasts and comparisons are noted between popular written accounts and both the visual representations they engender and reports outside the...
Impact and relevance are valued by both plant pathologists and
the supporters of research and extension. Impact has been characterized
as the “So what?” of research results, and in applied research
in agriculture typically involves some change in human
behavior. This might involve, for instance, avoidance of broad
spectrum pesticides,...
The effect of soil water suction and soil temperature on rates
of transpiration, photosynthesis, respiration and nitrogen fixation of
soybean (Glycine max. Merrill, var. Chippewa 64) seedlings was
studied. A special apparatus was developed in which the soil water
suction of several cells with soybeans growing in them could be...
The primary purpose of this investigation was to determine the
conditions necessary for the preparation of cell-free extracts of
nodule bacteroids capable of catalysing the reduction of acetylene to
ethylene and nitrogen to ammonia. Initial investigations were conducted
to determine whether intact soybean root nodules would reduce
acetylene to ethylene...
Direct anthropogenic stressors have caused drastic declines in wildlife populations over the past two centuries. In the face of these threats, spillover of infectious disease from domestic animals and livestock into wildlife, and novel interactions between parasites and pathogens within wildlife communities, have further suppressed already vulnerable populations. As management...
Development of new research tools is needed to better understand the potential effects of a noisier ocean on individual and populations of marine mammals. Current behavioral response studies utilize ship-mounted sound sources to induce short-term noise-related behavioral responses in tagged animals. Combining the tag with the sound source into an...
Oceanic plateaus are regions of overthickened oceanic crust and are often thought to form from the interaction of mantle plumes with oceanic lithosphere. These regions can cover vast areas of the ocean basins and represent a highly elevated magmatic flux relative to normal mid-ocean ridge spreading. Oceanic plateaus are considered...
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...
Emissions largely associated with the combustion of fossil fuels and agriculture has caused elevated atmospheric deposition of nitrogen (N) and sulfur (S) throughout much of the developed world. Increased atmospheric deposition of N and S can lead to soil and surface water acidification and affect forest soil nutrient supply. The...
Glucose-dependent growth of the luxCDABE reporter bacterium Pseudomonas fluorescens HK44 was monitored noninvasively in quartz sand under unsaturated-flow conditions within a 45- by 56- by 1-cm two-dimensional light transmission chamber. The spatial and temporal development of growth were mapped daily over 7 days by quantifying salicylate-induced bioluminescence. A nonlinear model...
Problem-based learning (PBL) is one type of inquiry-based learning. Many community college instructors use inquiry-based learning as an instructional strategy. There is much literature on the use of problem-based learning in undergraduate, graduate and medical school education, with a multitude of examples of specific techniques and problems to be addressed,...
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...
Two studies were conducted to evaluate the influence of supplement composition on intake and digestibility of a low-quality (< 6% CP), cool-season forage, as well as cow performance. Treatments included a non-supplemented control (CON), corn (approximately 8% CP), corn and urea (LU = corn + 0.09 mg/kg BW urea, approximately...
Published June 1993. 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 American beaver (Castor canadensis) was nearly extirpated by the late 1800's due to the fur trade. Due to reintroduction efforts, it now occupies much of its former range. Beavers are a keystone species and ecosystem engineers, greatly influencing riparian and instream habitats through selective harvesting of plant materials and...
The public controversy over possible health hazards from radioactive fallout from atomic bomb testing began in 1954, shortly after a thermonuclear test by the United States spread fallout world wide. In the dissertation, I address two of the fundamental questions of the fallout controversy: Was there a threshold of radiation...
Published December 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
Carbon and energy fluxes were measured with the eddy covariance technique
above two semi-arid ecosystems, ponderosa pine and juniper/sagebrush, located in
central Oregon. The two ecosystems have low LAI and a very open canopy structure.
The energy closure was ~70-80% at both ecosystems, equivalent to an imbalance of
150-250 W...
The sexually transmitted disease gonorrhea, caused by the Gram-negative bacterium and obligate human pathogen Neisseria gonorrhoeae, remains a significant health and economic burden worldwide. In the absence of a protective vaccine, antimicrobial agents are the only pharmacological intervention for patients with gonorrhea. However, due to the remarkable ability of gonococcus...
The red-sided garter snakes (Thamnophis sirtalis parietalis) of Manitoba, Canada, have been extensively studied for decades with little investigation into their immune system. These animals live very close to the arctic circle and spend over half of the year underground brumating. The annual cycle of the red-sided garter snakes make...
Billions of birds migrate at night over North America each year. However, few studies have described the phenology of these movements, such as magnitudes, directions, and speeds, for more than one migration season and at regional scales. In this study, we characterize density, direction, and speed of nocturnally migrating birds...
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42.59 −74.06 557
KGYX Portland ME 43.89 −70.26 125
KLWX Sterling VA 38.98 −77.48 83
KOKX Brookhaven NY
Byproducts of bamboo processing, such as leaves and branches, may have potential as a livestock feedstuff. The objectives of this study were to evaluate seasonal changes in proximate composition of several bamboo species and reed canarygrass, and subsequently determine the digestibility of bamboo in ponies. Monthly samples of Phyllostachys bissetii,...
Exposure to ultraviolet (UV) radiation is a primary cause of melanoma and non-melanoma skin cancer and thus represents a critical public health concern. Skin cancer risk behavior research lacks an instrument designed to assess health beliefs about UV exposure that may increase skin cancer risk by increasing risky UV exposure...
Current literature supports the benefits of participation in extracurricular activities(Barnett & Weber, 2008). However, a report from the U.S. Government AccountabilityOffice (GAO) found that students with disabilities participated in athletics to varyingdegrees, but at consistently lower rates than students without disabilities (US GovernmentAccountability Office, 2010). In January 2013, in response...
Previous reports on the state of the Latino/a-focused mental health literature suggest that the quantity of Latino/a-focused articles within the mental health field continued to be disproportionate to the growing percentage of Latino/as in the United States (Liang, Salcedo, Rivera, & Lopez, 2009). As such, Latino/a mental health experiences, needs,...
The proposed widening of State Street between Lancaster
Avenue and 25th Street in Salem, Oregon was evaluated regarding potential
construction impacts on the biotic resources (vegetation, fish,
wildlife, and wetlands) in the immediate area. The existing setting
was surveyed to establish a base level from which to measure changes,
arid...
When a person is tasting wine, they first evaluate the appearance and then the aroma. The smell of wine is a crucial part of tasting and the aromas emanating from the wine should be pleasant. Aroma quality perceived in wine is determined by multiple interactions of the components found in...
Zebrafish (Danio rerio) have become an increasingly important model organism for cancer research. There are several cancer models in which neoplasms are induced chemically or genetically. However, spontaneous (unknown etiology) neoplasms are rather common in zebrafish, particularly in older fish. For over a decade, spontaneous intestinal neoplasia and preneoplastic intestinal...
Low concentrations of hexachlorophene (HCP) inhibit a number of pyridine nucleotide-linked dehydrogenase enzymes. The I₅₀ HCP concentrations were 105 μM for pig heart isocitrate dehydrogenase (ICD), 65 μM for horse liver alcohol dehydrogenase, 39 μM for torula yeast glucose-6-phosphate dehydrogenase (G6PD), 6.0 μM for beef heart malate dehydrogenase, and 1.6...
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...
Roughstalk bluegrass (Poa trivialis L.) (RB) is a weed species that increased very quickly in grass seed production fields of the Willamette Valley. The invasion of RB in grass seed crops often occurs in waterlogged soils. In waterlogged areas, RB exhibited better competitiveness and had greater population densities than other...
Simulations of past climates require altered
boundary conditions to account for known shifts in the Earth
system. For the Last Glacial Maximum (LGM) and subsequent
deglaciation, the existence of large Northern Hemisphere
ice sheets caused profound changes in surface topography
and albedo. While ice-sheet extent is fairly well
known, numerous...
Three studies were designed to evaluate the promoting
effect of cyclopropenoid fatty acids (CPFA) on avian myeloblastosis
virus (AMV) infection in White Leghorn chickens.
In the first study effects on growth parameters, blood serum
and erythrocyte lipid composition of White Leghorn chickens
were investigated at 100 ppm and 300 ppm...
Child behavior disorders are the second most prevalent form of mental illness affecting children in the United States (Perou et al., 2013), with lifetime prevalence estimated at 10% (Nock, Kazdin, Hiripi & Kessler, 2007). Negative outcomes associated with ODD during childhood and adolescence include conflict in families, poor peer relationships,...
The Independent Multidisciplinary Science Team (IMST) convened a panel of experts on stream temperature and fish ecology in Corvallis, Oregon on October 5-6, 2000 for a scientific workshop on human influences on stream temperature and responses by salmonids. The workshop was designed to review and discuss scientifically credible data and...