The Columbia River Gillnetter is the pilot of the Lower Columbia River commercial fishing industry, keeping fishermen and the public in touch with today's important issues.
This document is a report on the Baseline Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural...
This document summarizes the Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural Studies Program, and the...
Part of the Vital Tillamook Indicator Project.
This presentation summarizes a collaborative effort of the Tillamook County Futures Council and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program developed 50 indicators of Tillamook County: 2020 Strategic Vision in order to gain insight into...
This document is a report on the Baseline Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural...
This document is a report on the Baseline Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural...
Sexual conflict over mating can result in sex specific morphologies and behaviors that
allow each sex to exert control over the outcome of reproduction. Genital traits, in
particular, are often directly involved in conflict interactions. Via genital manipulation,
we experimentally investigated whether genital traits in red-sided garter snakes influence
copulation...
Since its inception in 1985, the Tri‐State variety development program has primarily focused on the development of processing and dual‐purpose (process and fresh) russets. Recent breeding efforts have focused more on improving genetic resistance to various pests and diseases as a means of lowering production costs. Although the development of...
The agronomy research program at OSU-KBREC has several objectives. We continue to test traditional crops such as small grains (wheat and barley), forages (alfalfa and grass hay), new forage and niche grain crops (i.e. teff), and crop production practices for these crops (i.e. conventional and organic soil fertility methods), evaluating...
On April 7, 2014 the Center for Research on Lifelong STEM Learning and the Office of the Associate Provost for Academic Success and Engagement1 launched the Undergraduate Success Initiative with an invitational workshop entitled Redefining Undergraduate Success. A small planning team convened a group of 32 faculty and administrators with...
Oregon is the second largest producer of processed green beans, and cultivars are needed that are adapted to western Oregon. The types that have traditionally been used are the bush blue lake (BBL) green beans with high yields, excellent processing quality. On the other hand, then need improvement in plant...
Overview of Project and Varietal Development: Funding for 2013-14 was reduced substantially which resulted in a scaling back of the objectives. We conducted two yield and quality evaluation trials. However, the evaluation of commercial entries was funded entirely by fees from industry. We also grew out approximately 1300 breeding lines...
Processors need broccoli with better quality traits than what is available in cultivars developed for California and Mexico fresh markets. Farmers need to reduce labor costs of broccoli production but mechanizing harvest. Most contemporary commercially available cultivars are not suitable for either mechanical harvest or processing. The objective of the...
This research has demonstrated that liming clubroot infected soils to a pH ≥7.1 is an effective practice for reducing both the incidence and severity of clubroot. Liming does not kill the pathogen but rather prevents disease spores from infecting the plant. This research demonstrated that highly reactive calcitic lime products...
Research efforts were focused on testing various inbred combinations for hybrid production and adaptation to Oregon growing conditions. Trials at the Vegetable Re-search Farm included a yield trial of OSU derived hybrids, and observation trials of OSU inbreds and hybrids. Breeding funds were used for a major portion of the...
This paper reports on a study of primary contextualization processes during science immersion
trips and the resultant student learning. Four High School Ecology classes (n=67) and teachers
participated. Through a pre/post assessment of science concept knowledge (Pathfinder Network
Modeling) and follow-up interviews with students, it was determined that (1) significant...
This study reviews the experience of cooperation in five international river basins, focusing on the perceptions of risks and opportunities by country decision makers responding to a specific prospect of cooperation, and the effects of risk reduction and opportunity enhancement on the cooperation process. We explore the following five categories...
This issue is packed with information. James Osborne, Enology Extension Specialist, OSU, opens the newsletter with an article about managing Brettanomyces and spoilage in the winery. Patty Skinkis, Viticulture Extension Specialist, OSU, provides an article on the challenge of yield estimation in vineyards. Jay Pscheidt, Extension Plant Pathologist, OSU, provides a timely article on scouting for crown...
Results from vegetation management trials involving horticultural crops conducted during the past year are compiled and reported by faculty members of the Oregon Agricultural Experiment Station, the Oregon State Extension Service, and colleagues who cooperated from adjacent states along with local enterprises. This work was conducted throughout Oregon and involved...
We characterize how regional watersheds function as simple, dynamic systems through a series of hysteresis loops. These loops illustrate the temporal relationship between runoff and terrestrial water storage using measurements from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites in three regional-scale watersheds (>150 000 km² ) of the Columbia...
Considerable expertise is required to grow high-quality hops, and brewers and hop growers alike have a common goal of obtaining the highest quality hops possible. Change in the chemical composition of hops during plant maturation is a dynamic process requiring a comprehensive chemical and sensory analysis in order to maximize...
Submarine volcanic eruptions can result in both real and apparent changes in marine algal communities, e.g., increases in phytoplankton biomass and/or growth rates that can cover thousands of square kilometers. Satellite ocean color monitoring detects these changes as increases in chlorophyll and particulate backscattering. Detailed, high resolution analysis is needed...
This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the National Academy of Sciences and can be found at: https://doi.org/10.3141/2463-01
In some cases a canopy height model (CHM) is the only available source of forest height information. For these cases it is important to understand the predictive power of CHM data for forest attributes. In this study we examined the use of lidar-derived CHM metrics to predict forest structure classes...
The finite difference time domain (FDTD) method was used to model anti-reflective properties of a variety of sub-wavelength structures for 300 to 1300 nm input light. Light hitting non-tapered nanostructures exhibited interference patterns similar to thin film anti-reflective coatings (ARCs), increasing the anti-reflective effect at several wavelengths. The lowest reflectance...
The objective of this study was to compare structural load path and system behavior of a light-frame (LF) and a timber frame (TF) structure. This load path analysis is part of a broader research effort that compares LF to TF residential structures. Structural analysis software was used to create a...
We consider issues of equality and efficiency in two different school funding systems - a state-level system in Michigan and a foundation system in Ohio. Unlike Ohio, the Michigan system restricts districts from generating property or income tax revenue to fund operating expenditures. In both states, districts fund capital expenditures...
It is demonstrated in this paper that it is possible
to synthesize a stochastic flash ADC entirely from Verilog code
and a standard digital library. An analog comparator is introduced
that is constructed from two cross-coupled 3-input digital
NAND gates, and can be described in Verilog. The synthesized
comparators have...
Treatment of waste streams using algae can minimize eutrophication by removing inorganic nutrients while producing biomass which can be used for biofuels, animal feed, and fertilizer production. While there are many studies that report the growth of individual algal strains in different media, there are relatively few studies that examine...
We use density and microstructure data to characterize the properties and physical setting of optical thin layers observed over the New Jersey shelf in the summer of 2006. Layers were differentiated into two types by their vertical position in the water column, fluorescence intensity, and possibly community composition or cell...
Springs in arid lands provide critical habitat for a variety of species and functions to humans, yet the ecology and management needs of springs to maintain these values are poorly understood. To examine plant communities along spring watercourse-upland gradients, we sampled 12 springs at low (desert) and high (forest) elevations...
Climate change and efforts to address it have put the electric utility system under increasing pressure to adapt and evolve. Key to the success of these efforts will be the support of public utility commissions, the state agencies that oversee retail electric utilities. In an effort to determine how these...
Accurate measurement of the amount and timing of surface runoff at multiple scales is needed to understand fundamental hydrological processes. At the plot-scale (i.e., length scales on the order of 1 to 10 m) current methods for direct measurement of runoff either store the water in a collection vessel, which...
Citizen-science projects engage volunteers to gather or process data to address scientific questions. But
citizen-science projects vary in their ability to contribute usefully for science, conservation, or public policy.
eBird has evolved from a basic citizen-science project into a collective enterprise, taking a novel
approach to citizen science by developing...
Spatiotemporal planning involves making choices at multiple locations in space over some planning horizon to maximize utility and satisfy various constraints. In Forest Ecosystem Management, the problem is to choose actions for thousands of locations each year including harvesting, treating trees for fire or pests, or doing nothing. The utility...
Routine inspection of wood utility poles to detect internal decay involves drilling holes at or about the ground line. While these holes are useful for detecting internal decay, their presence raises concern among engineers about their potential effects on pole flexural properties. The effect of inspection holes on flexural properties...
Red oak, Douglas-fir, and ponderosa pine lumber was treated with a silicon/paraffinic system to assess the ability of the treatment to limit dimensional changes and moisture uptake during changes in temperature or relative humidity. The treatment initially had little effect on either property, but the magnitude of weight gain and...
Jointly with kilowatt-hours (kWh), electric power plants also produce CO₂, NO[subscript x], and SO₂. In this paper, we apply an environmental production model based on data envelopment analysis (DEA) to compare the production of kWh under command-and-control regulation of the undesirable byproduct with tradable permit regulation of the byproduct. This...
Understanding local and geographic factors influencing species distributions is a prerequisite for conservation planning. Our objective in this study was to model local and geographic variability in elevations occupied by native and nonnative trout in the northwestern Great Basin, USA. To this end, we analyzed a large existing data set...
Port Orford cedar (Chamaecyparis lawsoniana) has a reputation for being resistant to fungal attack, but much of the work to support this premise used older growth material (80-100 yr old). Given the tendency for the heartwood from the second growth of some species to be less durable, we evaluated the...
We used serology and muscle digestion to test black bears (Ursus americanus) from western Oregon, USA, for Trichinella. Results indicate black bears in Oregon are not part of a sylvatic cycle for Trichinella, and risk of human exposure to Trichinella larvae from eating black bear meat from Oregon appears low.
Shifting priorities in academic libraries have led to experimentation in methods of keeping a reference desk open for the users who still need in-person immediate help, while at the same time freeing up faculty librarians to pursue other pressing priorities. The Valley Library at Oregon State University has relied entirely...
Past tracking studies of marine animals have primarily targeted adults, biasing our understanding of at-sea habitat use toward older life stages. Anthropogenic threats persist throughout the at-sea ranges of all life stages and it is therefore of interest to population ecologists and managers alike to understand spatiotemporal distributions and possible...
This presentation was presented as part of a lighting talk session at the Northwest Archivists conference in Spokane, WA, in May 2014. It was also presented at the August 2014 Society of American Archivists conference in Washington D.C. at the Performing Arts Roundtable meeting.
This planning guide is the outcome of an international collaboration of researchers and practitioners/field managers working in communities at risk of wildfire in three countries. Initially, the team of social scientists from Australia, Canada, and the United States utilized the collective research literature to examine factors that influence stakeholder trust....
Martha Grahm reputedly said, “a dancer is an ‘athlete of God’” (Theys, 2010). Yet dance and exercise and sport science (herein referred to as exercise science) are often viewed as unique entities, sometimes dividedly so. Our contention is that dance and exercise science mutually benefit when the two disciplines are...
PURPOSE:
Little research has analyzed mistrust and discrimination influencing receipt of health care services among Latinos, particularly those living in rural areas. The present study examined the associations between medical mistrust, perceived discrimination, and satisfaction with health care among young-adult rural Latinos.
RESEARCH DESIGN:
This cross-sectional study analyzed data from...
Interdisciplinary research has been proposed and increasingly practiced as a way to transcend the limitations of our individual disciplines, which compartmentalize and limit the production of knowledge in multiple ways. While the compartmentalized knowledge that we know as modern science has provided many breakthroughs in understanding the world, it does...
A phenol formaldehyde (PF) adhesive was uniformly tagged with iodine such that it yielded sufficient x-ray computed tomography (XCT) gray-scale contrast for material segmentation in reconstructed wood-composite bondlines. Typically, untagged adhesives are organic and have a similar solid state density as wood cell-walls, and therefore cannot be segmented quantitatively in...
Land-use regulations are contentious everywhere because of their potential negative effects on private property values. In recent years, “pay or waive” compensation legislation has been passed in a number of U.S. states, requiring governments to compensate property owners for losses due to land-use regulations or grant exemptions from the regulations...
Despite the availability of several herbicides in table beets, weed control is still problematic. UpBeet (triflusulfuron; DuPont) was recently labeled, but the labeled timings and rate are inadequate for optimum weed control, particularly for lambsquarters. An experiment was placed at the OSU Vegetable Research Farm to determine the tolerance of...
For the past 18 years, processed vegetable growers in the Willamette Valley, OR have had a vital partner in crop pest monitoring – Oregon State University’s VegNet. This regional pest monitoring program provides weekly activity reports for common broccoli, cauliflower, sweet corn, and snap bean pests. Data is published on...
Enhanced efficiency fertilizer (EEF) technologies have the potential to improve the crop N use efficiency (NUE) as well as minimize negative environmental losses compared to conventional fertilizers. The EEF fertilizer products consist of urea plus additives (to inhibit N loss). The major pathways for N loss in our sweet corn...
Prices paid for sweet corn are low relative to the cost of producing the crop, and every strategy possible must be used to maximize net return. Two strategies used to enhance profitability but that have received little research attention under Western Oregon conditions are the use of pop-up fertilizers and...
The overall objective of this multi-year project is to maximize nutrient use efficiency without compromising bean yield and quality. This year’s project objectives were to: 1) evaluate crop response to P fertilizer at current soil P test levels in grower fields; 2) generate phosphorus (P) potassium (K), and nitrogen (N)...
The National Natural Landmarks (NNL) Program encourages the preservation of exceptional examples of the nation’s biological and geological features. To qualify for NNL designation, a site must be one of the best examples of a geological or biological feature within a biophysiographic province. Mount Howard - East Peak represents a...
Keywords: common murre; Uria aalge; nestling; colony; Northern California Current System; nCCS; diet; prey; northern anchovy; Engraulis mordax; rockfish; Sebastes; Pacific sand lance; Ammodytes hexapterus; smelt; Osmeridae; opportunistic foraging; Triangle Island, British Columbia; Tatoosh Island, Washington; Yaquina Head Outstanding Natural Area, Oregon; Devil's Slide Rock, California; Castle Rock National Wildlife...
Mutation analysis is often used to compare the effectiveness of different test suites or testing techniques. One of the main assumptions underlying this technique is the Competent Programmer Hypothesis, which proposes that programs are very close to a correct version, or that the difference between current and correct code for...
Despite the high economic and social value of Dungeness crab, no stock assessment work has been conducted on coastal Dungeness crab populations in Oregon. The fishery is currently managed based on a sex, size, and season strategy (e.g. males of a minimum size fished during specified months). It is estimated...
OBJECTIVE: Pharmacokinetic interactions exist between combined
oral contraceptives and protease inhibitors (PI). However, such
information is lacking for progestin-only oral contraception. We
sought to define the steady-state pharmacokinetic interaction between
norethindrone (NET) and PI in HIV-infected women.
METHODS AND DESIGN: We conducted an open-label, prospective,
nonrandomized trial to characterize the...
Early adulthood is a time of transition when large segments of the population embrace new roles and show decreases in behaviors and problems thought to underlie suicide risk. Still, other segments show emergent or worsening psychopathology per-haps exacerbated by age-related disconnection from prior relational and institutional supports. Suicide prevention efforts...
Prescribed fire is commonly applied world-wide as a tool for enhancing habitats and altering resource-selection patterns of grazing animals. A scientific basis for this practice has been established in some ecosystems but its efficacy has not been rigorously evaluated on mesic sagebrush steppe. Beginning in 2003, resource-selection patterns of beef...
This work sought to determine high pressure processing (HPP) effects on the activity of cathepsins B and D in the muscle of mackerel (Scomber scombrus) and horse mackerel (Trachurus trachurus). In mackerel, the cathepsin B activity decrease reached 40% at 450 MPa while in horse mackerel, low and intermediate pressures...
Citrus fruits contain phytochemicals effective in the prevention/treatment of chronic diseases. Although many orange peel phytochemicals have been identified, information on their distribution in flavedo and albedo is incomplete limiting the development of applications for orange byproducts including comminuted orange obtained by grinding peel/juice and used in beverage formulations. Phytochemical...
Using data collected from a non-random electronic survey of (N=116) Trinidadian origin men and women and data gleaned from a content analysis of roti shop websites on the Internet (n=80). This paper examines how the Trinidadian diaspora currently residing in places like New York, Toronto or London’s are influenced by...
Bird migration occurs at the largest of global scales, but monitoring such movements can be challenging. In the US there is an operational network of weather radars providing freely accessible data for monitoring meteorological phenomena in the atmosphere. Individual radars are sensitive enough to detect birds, and can provide insight...
We explore the optimal time path of carbon sequestration and carbon abatement in stabilizing
CO₂ levels under uncertainty of climate impacts. Using a two-period sequential decision making
model, we analytically derive optimal rates for the two control variables, abatement and
sequestration rates. Uncertainty is assumed to affect the desired future...
Managing weak stocks in mixed-stock fisheries often relies on proxies derived from data-rich indicator stocks, although there have been limited tests of the appropriateness of such proxies. For example, full cohort reconstruction of tagged Klamath River fall-run Chinook Salmon Oncorhynchus tshawytscha of northern California enables the use of detailed models...
We introduce a series of activities to help students understand the partial derivatives that arise in thermodynamics. Students construct thought experiments that would allow them to measure given partial derivatives. These activities are constructed with a number of learning goals in mind, beginning with helping students to learn to think...
Network theory is applied to an array of streamflow gauges located in the Coast Mountains of British Columbia and Yukon, Canada. The goal of the analysis is to assess whether insights from this branch of mathematical graph theory can be meaningfully applied to hydrometric data, and more specifically, whether it...
The Surface Ocean CO2 Atlas (SOCAT), an activity of the international marine carbon research community, provides access to synthesis and gridded fCO2 (fugacity of carbon dioxide) products for the surface oceans. Version 2 of SOCAT is an update of the previous release (version 1) with more data (increased from 6.3...
The chemical kinetics ODEs arising from operator-split reactive-flow simulations were solved on GPUs using explicit integration algorithms. Nonstiff chemical kinetics of a hydrogen oxidation mechanism (9 species and 38 irreversible reactions) were computed using the explicit fifth-order Runge–Kutta–Cash–Karp method, and the GPU-accelerated version performed faster than single- and six-core CPU...
Error in Distributed Temperature Sensor (DTS) water temperature measurements may be introduced by contact of the fiber optic cable sensor with bed materials (e.g., seafloor, lakebed, stream bed). Heat conduction from the bed materials can affect cable temperature and the resulting DTS measurements. In the Middle Fork John Day River,...
Patterns of salmon distribution throughout a riverscape may be expected to change over time in response to environmental conditions and population sizes. Changing patterns of use, including identification of consistently occupied locations, are informative for conservation and recovery planning. We explored interannual patterns of distribution by juvenile Coho Salmon Oncorhynchus...
A study was conducted in western Oregon to assess the impact of cultivar and weed management strategy on accumulation and loss of plant biomass and nutrients during the first 3 years of establishment when using organic fertilizer. The study was conducted in trailing blackberry (Rubus L. subgenus Rubus Watson) planted...
Open Educational Resources (OER) are increasingly used
in the higher education landscape as a solution for a variety of
copyright, publishing and cost-prohibiting issues. While OERs are
becoming more common, reports of usability tests that evaluate how
well learners can use them to accomplish their learning tasks have
lagged behind....