Using stable isotope analyses of N and C we present preliminary evidence of marine-derived nutrients from introduced Chinook salmon (Oncorhynchus tshawytscha Walbaum) in stream food webs of Laguna Los Patos, NW Patagonia. Similar to values reported within Chinook salmon's native distributional range periphyton and aquatic insects are the trophic levels...
This pilot study proposed a method for assessing the
status of vascular flow measured by transcutaneous oxygen pressure
(TcPO2) in the area of the ischium in people with spinal cord
injury (SCI). In a sample of 38 men (two groups: 12 physically
active and 26 sedentary) with thoracic SCI, the...
Euro-American settlement and organized fire suppression have been associated with structural and compositional changes in many upland forests of the western United States, but little is known about the impacts on riparian forests, portions of the landscape protected for habitat and water quality. In this study, we used dendro-ecological methods...
Bearing or compressive-strength capacity perpendicular to the grain of timber beams is a troublesome issue. Not only do many different load cases occur in practice that are not covered by structural timber design codes, but also these codes provide only a basic provision and vary throughout continents. Code design rules...
Development of herbicide-resistant crops has resulted in significant changes to agronomic practices, one of which is the adoption of effective, simple, low-risk, crop-production systems with less dependency on tillage and lower energy requirements. Overall, the changes have had a positive environmental effect by reducing soil erosion, the fuel use for...
Medusahead [Taeniatherum caput-medusae (L.) Nevski], a non-native, winter-annual grass (Poaceae), has
invaded rangelands throughout the western USA. Medusahead is an aggressive competitor that crowds out native plants
and reduces forage for wildlife and livestock. Sulfometuron methyl is a sulfonylurea herbicide used to control medusahead,
but its effect on non-target native...
This paper highlights the development of a rapid visual screening (RVS) tool to quickly identify, inventory, and rank residential buildings that are potentially seismically hazardous, focusing on single-family, wood-frame dwellings with plan irregularity. The SAPWood software was used to perform a series of nonlinear time-history analyses for 480 representative models,...
Snags and hardwoods contribute to biological, structural, and functional diversity in old-growth forests. In the US Pacific Northwest, only general knowledge about regional patterns is available to determine target density of snags and hardwood trees. To investigate their variability at relevant scales for silviculture, we examined snag and hardwood densities...
The range in the projections of future climate warming can be attributed to the inherent uncertainty in the representation of climate model parameters and processes. In this study, we assess the effect of uncertainty in climate sensitivity and ocean heat uptake on the rate of future climate change. We apply...
table isotope analysis is a powerful tool for assessing plant carbon and water relations and their impact on biogeochemical processes at different scales. Our process-based understanding of stable isotope signals, as well as technological developments, has progressed significantly, opening new frontiers in ecological and interdisciplinary research. This has promoted the...
Phylogenetic analyses based on nLSU and ITS sequence data indicate that the sequestrate genus Gigasperma is polyphyletic. Gigasperma cryptica, which is known only from New Zealand, has affinities with the Cortinariaceae whereas G. americanum and two additional undescribed taxa from western North America are derived from Lepiota within the Agaricaceae....
Producing for the Future is an Oregon State University research project where youth, adult partners, and OSU researchers work together to design and plant a community garden and develop a microenterprise venture to market the produce grown. Using the CBPR process, everyone on the project collects and analyze data evaluating...
Measurements on growth traits up to 41 years of age
from 68 progeny sites in eight first-generation breeding
zones of coastal Douglas-fir (Pseudotsuga menziesii
[MIRB.] FRANCO var. menziesii) in the US Pacific Northwest
were used to investigate age trends of genetic parameters
and to determine optimum age of selection. Heritabilities...
Studies of mosquito preferences for avian hosts have found that some bird species are at greater risk than others of being fed upon by mosquitoes. The ecological factors that determine this interspecific variation in avian host use by mosquitoes have been little studied, despite the possibility that such variation may...
While the coastal waters of western North America hold great promise for wind and wave energy development, many concerns have been raised about the potential environmental impacts of the installation of these devices and their complex mooring systems. Here I focus on characterizing benthic habitats and biological communities in offshore...
The speaker provided the background of the conference and its objective. The groundwork for the current conference was laid in earlier workshops and studies. These include the 2007 scientific workshop, "Ecological Effects of Wave Energy Development in the Pacific Northwest", the report "Effects of EMFs from Undersea Power Cables on...
In this study the impact of MLF on red wine color and the ability of Oenococcus oeni to degrade compounds important to the development of stable color were studied. Pinot noir and Merlot wines were produced, where simultaneous alcoholic and malolactic fermentations were induced in half of the wines. At...
Each of the three breakout groups received instructions concerning their objectives along with tools to use.
Breakout Group Session 1: Baseline Studies
Breakout Group Session 2: Impact/Short Scale Studies
Breakout Group Session 3: Monitoring/Cumulative/Long-Term Studies
Oregon is currently in the process of establishing Marine Reserves (MRs) and Marine Protected Areas (MPAs) within Oregon’s Territorial Sea. To assure that residents are aware of impending policy and the science behind it, science educators must formulate education tools that define terms and identify issues, but do not alienate...
Due to various reasons the previous investigator decided to pull out the crop level trials from the original experiment designed in 2010 season. However, the irrigation field experiments implemented in the 2010 season continued in 2011, in order to find out the impact of varied deficit irrigation regimes on vine...
Demands for space in Oregon’s Territorial Sea and Outer Continental Shelf are increasing over time, putting pressure on existing ecological resources, uses, and users of this shared public resource. Data and information are critical to understanding the impacts of this “sea change.” Key ecological questions need to be answered to...
Oregon has a strong framework for ocean planning rooted in the adoption of Oregon’s Ocean Resources Goal 19 in 1976. Goal 19 establishes that it is the State of Oregon’s policy to conserve marine resources and ecological functions for the purpose of providing long-term ecological, economic, and social value and...
Offshore renewable energy development (ORED) could induce local ecological changes, negatively affecting species of conservation interest. If well planned and coordinated, on the other hand, ORED could be beneficial to the marine environment in the region of device deployment in several respects.
Because of the current scale and pace of...
The Oregon coast has been identified as an area with great potential for production of electricity from wave and wind energy, and development of marine renewable energy facilities are being discussed for several locations along the Oregon coast. The potential impact of this development on eastern gray whales is largely...
There are many drivers for the pursuit of renewable energy extraction from coastal seas. In the United Kingdom these include moving away from fossil fuels to mitigate the impacts of climate change, improving energy security by diversifying supply options, increasing wealth generation in outlying coastal communities, and seeking alternative sources...
We examine the effects of multilateral trade reform on Korean agriculture and economy. We first measure agricultural total factor productivity (TFP) and its components, technological and technical efficiency change, by estimating a production function and stochastic frontier using data from 1970-2009. Then, we examine the sources of Korean agricultural TFP...
Construction of a wave energy facility is planned for a site off of Reedsport, Oregon. The initial licensed development will consist of ten buoys within a 0.25 mile2 area at depths of 50 - 69 m and will produce up to 1.5 megawatts (MW; Figure 1)a. A proposed project expansion...
[The main report can be found in the full conference proceedings. The files here are the conference presentation and an appendix to the main report,] The specific intent of this presentation is to provide a framework to stimulate thought and discussion about the issue of the potential ecological effects of...
The ocean deployment of arrays of Wave Energy Converters (WEC arrays) appears likely in the near future, and deployment of offshore wind turbines has already started. These technologies tap into a potential renewable energy resource but also involve complex systems with uncertain environmental consequences that will likely scale with the...
Interest has increased in developing renewable energy sources to reduce U. S. dependence on oil. Policy makers and resource managers now are considering power generation technologies proposed for development along the Continental Shelf of the U. S. Pacific coast beyond state waters. This region supports abundant populations of seabirds and...
The Chief of the Environmental Sciences Section of BOEM presented the federal perspective that focused on identifying and addressing data gaps. The manager of the Oregon Department of Fish and Wildlife's Marine Resource Program and the Marine Affairs Coordinator for the Oregon Department of Land Conservation and Development acknowledged the...
Electromagnetic fields (EMF) originate from both natural and anthropogenic sources. In the sea, natural sources include the Earth’s magnetic field, sea and tidal currents traveling through that field, and various processes within organisms. Electricity moving along cables and various other devices (as a part of renewable offshore energy development) produces...
Wine aroma is one of the most important aspects of wine quality and yeast contribute a significant amount of the volatile aroma compounds in wine. However, our understanding of the contribution of specific yeast to Pinot noir aroma is still limited. In particular, the contribution of non-Saccharomyces yeast species present...
The offshore waters and the coastline of Oregon provide year-round habitat for a number of birds, marine mammals, sea turtles, and possibly bats, at least fifteen of which are federally listed as threatened or endangered. Previous workshops on offshore renewable energy have provided baseline information on the distribution and abundance...
Fishes are expected to interact with Marine Renewable Energy (MRE) projects in ways dependent upon both the nature of the project in question and on the ecology of the species considered (Figure 1). The siting of MRE projects will determine the habitat affected, the species expected to encounter the project,...
As the Chief of the Environmental Sciences Section of BOEM, the speaker welcomed participants and gave background on the topic from the federal perspective. She identified BOEM's need to share environmental research information as well as determine the largest data gaps to guide future research. From her perspective, the intent...
Development of wave and offshore wind-based marine renewable energy is anticipated on the Outer Continental Shelf (OCS) off Oregon and much of the Pacific Northwest in the coming decade. Multiple issues related to environmental considerations and information needs remain for these emerging industries. The Oregon Marine Renewable Energy Environmental Science...
This presentation will provide an overview of how the Bureau of Ocean Energy Management (BOEM) uses environmental information for decision-making and the role BOEM’s Environmental Studies Program (ESP) plays in fulfilling information needs to inform Outer Continental Shelf (OCS) resource management decisions.
The ESP conducts and oversees top-quality scientific research...
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.
We previously reported that inhibition of the Na⁺ translocating NADH:ubiquinone oxidoreductase (NQR), either by chemical inhibition or mutation, increased toxT transcription in Vibrio cholerae. In this study, we revealed that the nqr mutant strain showed similar phenotypes as the Escherichia coli NADH dehydrogenase I (nuo) mutant strain (e.g. growth defect...
Greenhouse studies were conducted to evaluate the influence of selected adjuvants on
glyphosate efficacy on yellow nutsedge and tuber production. Glyphosate was applied
at 0, 0.25, 0.43, 0.87, 1.26 (1x rate), and 1.74 kg ae ha⁻¹ 31 d after yellow nutsedge
was planted. Each rate was mixed with one of...