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.
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 presentation summarizes a collaborative effort of the Wallowa Resources, Northeast Oregon Economic Development District and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program to develop indicators of Wallowa County community vitality in a way that reflects the goals and values of the...
This document summarizes a collaborative effort of the Wallowa Resources, Northeast Oregon Economic Development District and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program to develop indicators of Wallowa County community vitality in a way that reflects the goals and values of the...
The objectives of this study were to evaluate the performance of wood-frame shear walls under monotonic and cyclic loads by: 1) determining variability of shear wall performance; 2) comparing performance of walls under each loading protocol; 3) evaluating effects of anchorage on wall perfor-mance; and 4) evaluating performance of walls...
Grain is produced on upwards of 100,000 acres in the Klamath Basin, including nearly 50,000 acres within the Klamath Reclamation Project. Susceptibility to late spring frosts has historically limited winter cereal production and spring cereals have accounted for the majority of production. Starting in 2003, acres seeded to winter wheat...
The recent increase in energy prices and political instability in the Middle East has sparked renewed interest in alternative energy sources and technologies both locally and nationally. Biodiesel is an appealing transportation fuel source for many reasons: it readily substitutes for petroleum diesel, it tends to burn cleaner with fewer...
Euphorbia lagascae (Euphorbiaceae- ‘spurge family’) has been recognized as one of the more promising potential new industrial crops for the drier regions in the temperate zone
(Roseberg, 1996). In the late 1950s and early 1960s the USDA analyzed many plant species in search of novel chemical compounds. They first recognized...
There are times when forage producers desire a quick-growing, high quality annual forage in mid-summer in situations such as: less-than full season irrigation water supply; need for an emergency crop due to crop failure; or forage rotation crop between alfalfa stands. Currently there are few good options in these situations....
As we described previously and elsewhere in this annual report, teff (Eragrostis tef [Zucc.], Poaceae) is a warm season (C4) annual tropical grass that can produce good quality forage during a short summer time frame, and thus has the potential to be a viable crop choice when forage producers: a)...
As we described previously and elsewhere in this annual report, teff (Eragrostis tef [Zucc.], Poaceae) is a warm season (C4) annual tropical grass that can produce good quality forage during a short summer time frame, and thus has the potential to be a viable crop choice when forage producers: a)...
Cavity tree and snag abundance data are highly variable and contain many zero observations. We predict cavity tree and snag abundance from variables that are readily available from forest cover maps or remotely sensed data using negative binomial (NB), zero-inflated NB, and zero-altered NB (ZANB) regression models as well as...
Optical closure is essential for the determination of biogeochemical properties from ocean color remote sensing information. Mie scattering theory, a radiative transfer model, and a semi-analytical inversion algorithm were used to investigate the influence of particles and their properties on optical closure. Closure results were generally poor. Absorption coefficient (at)...
The forces exerted on light-frame wood buildings as a result of surge and waves are not fully understood. With a better understanding of these types of forces, it may eventually be possible to build coastal structures to better withstand the loads. In this paper, a recent two part experimental study...
In July 2005, the Oregon State University Libraries began accepting electronic versions of student theses and dissertations into ScholarsArchive@OSU, the library’s institutional repository. By January 2007, all Oregon State University graduate students were required to deposit their final research. This paper compares past processes and workflows for print theses and...
• There are two optima for maximizing hydraulic conductance per vasculature volume in plants. Murray's law (ML) predicts the optimal conduit taper for a fixed change in conduit number across branch ranks. The opposite, the Yarrum optimum (YO), predicts the optimal change in conduit number for a fixed taper.
•...
We investigated the response of hyporheic exchange flow (HEF) to wood removal in a small, low-gradient, gravel bed stream in southeast Alaska using a series of groundwater models built to simulate HEF for the initial conditions immediately after wood removal and 1 month, 2 years, 4 years, and 16 years...
Regional estimation of potential forest productivity is important to diverse applications, including biofuels supply, carbon sequestration, and projections of forest growth. Using PRISM (Parameter-elevation Regressions on Independent Slopes Model) climate and productivity data measured on a grid of 3356 Forest Inventory and Analysis plots in Oregon and Washington, we evaluated...
1. The xylem pressure inducing 50% loss of hydraulic conductivity due to embolism
widely used for comparisons of xylem vulnerability among species and across aridity
However, despite its utility as an index of resistance to catastrophic xylem failure
drought, P5o may have no special physiological relevance in the context of...
The northern California Current System is impacted by two primary freshwater
sources: the Strait of Juan de Fuca and the Columbia River. The Columbia is frequently
bidirectional in summer, with branches both north and south of the river mouth
simultaneously. We describe the interaction of these two warm Columbia plumes...
The biosonar system of dolphins and porpoises has been studied for about 5 decades and much has
been learned [Au,W.W. L. )1993). The Sonar of Dolphins (Springer, New York)]. Most experiments
have involved human-made targets; little is known about odontocetes’ echolocation of prey. To
address this issue, acoustic backscatter from...
Primula sect. Parryi comprises five species endemic to western North America: P. parryi, P. angustifolia, P. rusbyi, P. capillaris, and P. cusickiana with four varieties. This section, derived from a clade with representatives in Asia and Europe, exemplifies a phytogeographic pattern in which a widespread species is accompanied by multiple...
The Messenger magazine is published twice annually by Oregon State University Libraries. In this issue: Celebrating our 10th anniversary of the Valley Library remodel
The placement of ‘Pseudomonas butanovora’ in the genus Thauera was proposed previously, based on 16S rRNA gene sequence analysis, upon further studies of taxonomical characteristics. In this study, physiological characteristics and DNA–DNA reassociation data are presented and the transfer of ‘P. butanovora’ to the genus Thauera is proposed. The original...
Subsampling and subsequent imputation of tree heights can improve the predictive performance of stand volume estimation but may also introduce biases. Using coastal Douglas-fir data from southwest Oregon, USA, the predictive performance of several height imputation strategies for estimating stand volume was evaluated. A subsample of 1-15 trees was randomly...
Many investigations using satellite data have determined that aerosol optical depth and cloud cover are correlated and some have interpreted the correlation as evidence of an aerosol indirect effect on clouds. This study uses in situ aircraft observations taken during the Indian Ocean Experiment (INDOEX), February–March 1999, and mostly over...
In north and central California, equatorward winds drive equatorward flows
and the upwelling of cold dense water over the shelf during the midspring and summer
upwelling season. When the winds temporarily weaken, the upwelling flows between
Point Reyes and Point Arena ‘‘relax,’’ becoming strongly poleward over the shelf.
Analytical and...
Many cranberry growers on the Oregon coast are well aware that good pollination is necessary for quality fruit set. Multiple
visits to the flower deliver more pollen, which can increase the percentage fruit set, number of seeds per berry, and mature
berry weight. The better a bee is at delivering...
Usability, user studies, and evaluating user experiences have been a part of academic libraries for many years. In the last 20 years libraries have created ad hoc usability teams to do user studies. Oregon State University (OSU) Libraries started its ongoing team in 2006, resulting in an increased focus on...
We show that death by dissolution is an important size-dependent mortality Utilizing a new experimental design, we were able to replicate saturation states frequently encountered by Mercenaria mercenaria in coastal deposits mercenaria were reared in sediments at Ωaragonite = 0.4 and 0.6, significant occurred (14.0% and 14.4% d⁻¹, respectively), relative...
During the 2003 summer monsoon, the Hi‐CLIMB seismological stations deployed across the Himalayan Range detected bursts of high‐frequency seismic noise that lasted several hours to days. On the basis of the cross correlation of seismic envelopes recorded at 11 stations, we show that the largest transient event on 15 August...
During the upwelling season in central California, northwesterly winds along the
coast produce a strong upwelling jet that originates at Point Año Nuevo and flows
southward across the mouth of Monterey Bay. A convergent front with a mean
temperature change of 3.77 ± 0.29°C develops between the warm interior waters...
Objectives:
Develop broccoli varieties adapted to western Oregon with suitable quality, high yields, and disease resistance. Specific traits include:
Early to midseason maturity
Concentrated yield potential
Head rot and downy mildew resistance
Large openly branched heads that are well exserted and have clean stems for easy trimming and separation into...
Objectives:
Breed improved Bush Blue Lake green bean varieties with:
a. White and gray mold resistance
b. Improved plant architecture
c. High economic yield
d. Improved pod quality (including straightness, color, smoothness, texture, flavor and quality retention, and delayed seed size development)
e. Tolerance to abiotic stresses
Improve seed quality...
Intelligent user interfaces, such as recommender systems and email classifiers, use machine learning algorithms to customize their behavior to the preferences of an end user. Although these learning systems are somewhat reliable, they are not perfectly accurate. Traditionally, end users who need to correct these learning systems can only provide...
The content of this Technical Report is related to: Peachey, E., Doohan, D., & Koch, T. (2012). Selectivity of fomesafen based systems for preemergence weed control in cucurbit crops. Crop Protection, 40, 91-97. doi: 10.1016/j.cropro.2012.04.003.
Artists use different means of stylization to control the
focus on different objects in the scene. This allows them to portray complex meaning and achieve certain artistic effects. Most
prior work on painterly rendering of videos, however, uses only
a single painting style, with fixed global parameters, irrespective of objects...
Oregon, much like the nation, has historically had a paradoxical relationship to migration. Oregon is famous for the Lewis and Clark expedition and the Oregon Trail. It is, and always has been, greatly affected and inspired by interstate migration yet each successive generation has been less than welcoming to further...
Nitrogen use varies dramatically among crops. Short season crops with relatively small
biomass accumulation will not need as much nitrogen for growth as long season corn varieties
that develop a large canopy. The recent introduction of sweet corn hybrids that tolerate root rot
may reduce N fertilizer need. Hybrids such...
Though the data from the Research Evaluation does show how the new lines are doing and which crosses are the most promising, the low number of evaluators does not lead to statistically significant analysis of the results.
PowerPoint slides and documents from a meeting between the Oregon Dungeness Crab Commission, the Oregon Dept. of Fish and Wildlife and crab fishers at the Best Western, Agate Beach Inn on July 28-29, 2009. Topics covered included pot limits, derelict gear, vessel safety, crab logbooks, the Washington State buyback program,...
Asymmetric tensor fields present new challenges for visualization techniques such as hyperstreamline placement and glyph packing. This is because the physical behaviors of the tensors are fundamentally different inside real domains where eigenvalues are real and complex domains where eigenvalues are complex. We present a hybrid visualization approach in which...
Many applications include machine learning algorithms intended to learn “programs” (rules of behavior) from an end user’s actions. When these learned programs are wrong, their users receive little explanation as to why, and even less freedom of expression to help the machine learn from its mistakes. In this paper, we...
The purpose of this project was to collect baseline data for a Before-After-Control-Impact (BACI) study of effects a wave energy conversion project planned for the coastal waters off of Reedsport, Oregon on the local benthic ecology. A BACI study controls for inevitable spatial and temporal environmental variation and provides an...
End-user programmers’ code (e.g., accountants’ spreadsheet formulas) is fraught with errors. To help mitigate this problem, end-user software engineering research is becoming established. However, most of this work has focused on feature usage, rather than debugging strategies. If a debugging tool were to support end-user programmers’ specific debugging strategy needs,...
Reliable analysis of vector elds is crucial for the rigorous interpretation of the ow data stemming from a wide range of
engineering applications. Morse decomposition of a vector field has proven a useful topological representation that is more numerically stable than previous vector field skeletons. In this paper, we enhance...
Although there have been decades of research into how professional programmers debug, only recently has work begun to emerge about how end-user programmers attempt to debug their programs. Without understanding how end-user programmers approach debugging, we cannot build tools to adequately support their needs. To help fill this need, this...
End-user programmers’ code is notoriously buggy. This problem is amplified by the increasing complexity of end users’ programs. To help end users catch errors early and reliably, we employ a novel approach for the design of end-user debugging tools: a focus on supporting end users’ effective debugging strategies. This paper...
This report was written by the Independent Multidisciplinary Science Team (IMST) for the Oregon Plan for Salmon and Watersheds. Information on report preparation and acknowledgment of reviewers are included in the report.
CERM Poster 2009.
To determine if diet affects the growth rate of juvenile ling cod, we began with three initial objectives: 1) Record the growth rates of juvenile lingcod on different diets (squid and sardine); 2) Determine if hemocyanin will cause lingcod skin and muscle pigmentation will take on a...
In Fall 2006, a faculty member in George Washington University's University Writing 20 (UW20) program began incorporating service learning into her theme-based first-year writing course. Along with her librarian partner, they linked two research assignments to the service work of the students. An end-of-semester survey was administrated over three semesters...
Groups of spinner dolphins have been shown to cooperatively herd small prey. It was hypothesized that the strong group coordination is maintained by acoustic communication, specifically by frequency-modulated whistles. Observations of groups of spinner dolphins foraging at night within a sound-scattering layer were made with a multibeam echosounder while the...
This article describes a technique using the Thomson Reuters' Journal Citation Reports and the SHERPA RoMEO Web site to identify a set of core journals in a discipline and determine whether the journals' publishers allow preprint or postprint archiving in their copyright transfer agreements.
When a temporal trend in forest conditions is present, standard estimates from paneled forest inventories can be biased. Thus methods that use more recent remote sensing data to improve estimates are desired. Paneled inventory data from national forests in Oregon and Washington, U.S.A., were used to explore three nearest neighbor...
This study evaluates the impacts of sea surface temperature (SST) specification and grid resolution on numerical simulations of air–sea coupling near oceanic fronts through analyses of surface winds from the European Centre for Medium-Range Weather Forecasts (ECMWF) model. The 9 May 2001 change of the boundary condition from the Reynolds...
The global biogeochemical cycle of methane has received wide attention because of methane's role as a greenhouse gas. Measurements of methane in air trapped in Greenland ice cores provide a high-resolution record of methane levels in the atmosphere over the past ~100 ka, providing clues about what controls the methane...
In October 2007 the NOAA ship Ronald H. Brown sailed southward within 300 km of the coast of Ecuador and Peru, sampling surface meteorology, air–sea turbulent and radiative fluxes, cloud properties, and upper-air soundings from the equator to 20°S. Two distinct water masses characterize the coastal region: cold-pool water below...
In the blink of an eye, unconscious bias was visible to me, an African American. A man saw my face as I walked into the store and unconsciously checked his wallet. On the street, a woman catches my eye a half block away and moves her purse from the handle...
Almost universally, forest inventory and monitoring databases are incomplete, ranging from missing data for only a few records and a few variables, common for small land areas, to missing data for many observations and many variables, common for large land areas. For a wide variety of applications, nearest neighbor (NN)...
The Lincoln County Soil and Water Conservation District produced this map to illustrate existing conservation easements as of 2009. The largest ownerships on the map are 8000 acres owned by Pacific Forest Trust and being managed for older forest conditions with revenue generation from
thinning and selective logging, the Van...
Many soil-derived particles dominated by insoluble material, including Saharan dusts, are known to act as ice nuclei. If, however, dust particles can compete with other atmospheric particle types to form liquid cloud droplets, they have a greater potential to change climate through indirect effects on cloud radiative properties and to...
The origin of the Pacific Decadal Oscillation (PDO), the leading mode of sea surface temperature variability for the North Pacific, is a matter of considerable debate. One paradigm views the PDO as an independent mode centered in the North Pacific, while another regards it as a largely reddened response to...
Bioturbating infauna significantly modify reaction and transport processes in permeable sediments, though most studies to date are limited in the scope of species examined. We conducted a comparative field study measuring density-dependent effects of six common bioturbating species on porewater advection and biogeochemistry, across three intertidal permeable sediment habitats. The...
The objectives of this study were to evaluate the performance of wood-frame shear walls under monotonic and cyclic loads by: 1) determining variability of shear wall performance; 2) comparing performance of walls under each loading protocol; 3) evaluating effects of anchorage on wall performance; and 4) evaluating performance of walls...
The gravitational component of water potential and frictional resistance during transpiration lead to substantial reductions in leaf water potential (Ψl) near the tops of tall trees, which can influence both leaf growth and physiology. We examined the relationships between morphological features and gas exchange in foliage collected near the tops...
In most estuarine systems it is assumed that the dominant along-channel momentum balance is between the integrated pressure gradient and bed stress. Scaling the amplitude of the estuarine circulation based on this balance has been shown to have predictive skill. However, a number of authors recently highlighted important nonlinear processes...