Index Catalog // ScholarsArchive@OSU

Classifying the toxicity of pesticides to honey bees via support vector machines with random walk graph kernels

Creator:: Yang, Ping
Abstract:: Pesticides benefit agriculture by increasing crop yield, quality, and security. However, pesticides may inadvertently harm bees, which are valuable as pollinators. Thus, candidate pesticides in development pipelines must be assessed for toxicity to bees. Leveraging a data set of 382 molecules with toxicity labels from honey bee exposure experiments, we...
Resource Type:: Masters Thesis

Level of engagement of recreational physical activity of urban villagers in Luohu, Shenzhen, China

Creator:: Shi, Lu, Leung, Willie, Zheng, Qingming, and Wu, Jie
Abstract:: Physical activity is important for health. However, there is a lack of literature related to the physical activity levels of adults living in urban villagers, which is a vulnerable population in China. The aim of this study is to compare the physical activity and sedentary behavior engagements between urban villagers...
Resource Type:: Article

Offspring of first-generation hatchery steelhead trout (Oncorhynchus mykiss) grow faster in the hatchery than offspring of wild fish, but survive worse in the wild: Possible mechanisms for inadvertent domestication and fitness loss in hatchery salmon

Creator:: Blouin, Michael S., Wrey, Madeleine C., Bollmann, Stephanie R., Skaar, James C., Twibell, Ronald G., and Fuentes, Claudio
Abstract:: Salmonid fish raised in hatcheries often have lower fitness (number of returning adult offspring) than wild fish when both spawn in the wild. Body size at release from hatcheries is positively correlated with survival at sea. So one explanation for reduced fitness is that hatcheries inadvertently select for trait values...
Resource Type:: Article

A broad-spectrum cloning vector that exists as both an integrated element and a free plasmid in Chlamydia trachomatis

Creator:: Garvin, Lotisha, Vande Voorde, Rebecca, Dickinson, Mary, Carrell, Steven, Hybiske, Kevin, and Rockey, Daniel
Abstract:: Plasmid transformation of chlamydiae has created new opportunities to investigate host–microbe interactions during chlamydial infections; however, there are still limitations. Plasmid transformation requires a replicon derived from the native Chlamydia plasmid, and these transformations are species-specific. We explored the utility of a broad host-range plasmid, pBBR1MCS-4, to transform chlamydiae, with...
Resource Type:: Article

Is there no “I” in team? Potential bias in key informant interviews when asking individuals to represent a collective perspective

Creator:: Fleming, Whitney, King, Brittany, Robinson, Kerrick, Wade, Eric, Erickson, Brian, Delie, Jackie, de Ycaza, Ricardo, Trimbach, David, Spalding, Ana, and Biedenweg, Kelly
Abstract:: This paper sought to understand the extent to which, and how individuals use personal or collective language when asked to articulate sense of place from a collective perspective. Understanding a collective sense of place could illuminate place-based connections in natural resource industries, where it is as groups or as institutions...
Resource Type:: Article

Distrust within protected area and natural resource management: A systematic review protocol

Creator:: Erickson, Brian D. and Biedenweg, Kelly
Abstract:: Trust is a key variable for successful natural resource management and is commonly the focus of conceptual and methodological development. Distrust, on the other hand, is frequently cited as an obstacle to management, but appears to be rarely defined, conceptually underdeveloped, and inconsistently examined. This systematic review protocol (OSF preregistration...
Resource Type:: Article

Structural Damage Prediction of a Reinforced Concrete Frame under Single and Multiple Seismic Events Using Machine Learning Algorithms

Creator:: Lazaridis, Petros C., Kavvadias, Ioannis E., Demertzis, Konstantinos, Iliadis, Lazaros, and Vasiliadis, Lazaros K.
Abstract:: Advanced machine learning algorithms have the potential to be successfully applied to many areas of system modelling. In the present study, the capability of ten machine learning algorithms to predict the structural damage of an 8-storey reinforced concrete frame building subjected to single and successive ground motions is examined. From...
Resource Type:: Article

Larval development in the Pacific oyster and the impacts of ocean acidification : differential genetic effects in wild and domesticated stocks

Creator:: Durland, Evan, Pierre De Wit,, Meyer, Eli, and Langdon, Chris
Abstract:: The adaptive capacity of marine calcifiers to ocean acidification (OA) is a topic of great interest to evolutionary biologists and ecologists. Previous studies have provided evidence to suggest that larval resilience to high pCO2 seawater for these species is a trait with a genetic basis and variability in natural populations....
Resource Type:: Article

Temporally balanced selection during development of larval Pacific oysters (Crassostrea gigas) inherently preserves genetic diversity within offspring

Creator:: Durland, Evan, De Wit, Pierre, and Langdon, Chris
Abstract:: Balancing selection is one of the mechanisms which has been proposed to explain the maintenance of genetic diversity in species across generations. For species with large populations and complex life histories, however, heterogeneous selection pressures may create a scenario in which the net effects of selection are balanced across developmental...
Resource Type:: Article

Discovery of a dune-building hybrid beachgrass (Ammophila arenaria × A. breviligulata) in the U.S. Pacific Northwest

Creator:: Mostow, Rebecca S., Barreto, Felipe, Biel, Reuben, Meyer, Eli, and Hacker, Sally D.
Abstract:: The production of novel hybrid zones is an ecologically important consequence of globally increasing rates of species introductions and invasions. Interspecific hybridization can facilitate gene flow between parent species or produce novel taxa that may alter invasion dynamics or ecosystem services. The coastal sand dunes of the U.S. Pacific Northwest...
Resource Type:: Article

Sablefish (Anoplopoma fimbra Pallas, 1814) plasma biochemistry and hematology reference intervals including blood cell morphology

Creator:: Schubiger, Carla B., Gorman, M. Elena, Johns, Jennifer L., Arkoosh, Mary R., and Dietrich, Joseph P.
Abstract:: Plasma biochemistry and hematology reference intervals are integral health assessment tools in all medical fields, including aquatic animal health. As sablefish (Anoplopoma fimbria) are becoming aquaculturally and economically more important, this manuscript provides essential reference intervals (RI) for their plasma biochemistry and hematology along with reference photomicrographs of blood cells...
Resource Type:: Article

Changing the culture of coastal, ocean, and marine sciences : strategies for individual and collective actions

Creator:: Behl, Mona, Cooper, Sharon, Garza, Corey, Kolesar, Sarah E., Legg, Sonya, Lewis, Jonathan C., White, Lisa, and Jones, Brandon
Abstract:: Geoscience is plagued with structural and systemic barriers that prevent people of historically excluded groups from fully participating in, contributing to, and accruing the benefits of geosciences. A change in the culture of our learning and working environments is required to dismantle barriers and promote belonging, accessibility, justice, equity, diversity,...
Resource Type:: Article

Participatory GIS mapping highlights indirect use and existence values of coastal resources and marine conservation areas

Creator:: Scully-Engelmeyer, Kaegan M., Granek, Elise F., Nielsen-Pincus, Max, and Brown, Greg
Abstract:: Consideration of social and cultural dimensions in coastal and marine planning has increased and ecosystem services provide important framing to investigate values and priorities associated with these systems. Research efforts in coastal communities offer insights on social dimensions of ocean and coastal management decisions, but questions remain about how demographics...
Resource Type:: Article

Exploring biophysical linkages between coastal forestry management practices and aquatic bivalve contaminant exposure

Creator:: Scully-Engelmeyer, Kaegan, Granek, Elise F., Nielsen-Pincus, Max, Lanier, Andy, Rumrill, Steven S., Moran, Patrick, Nilsen, Elena, Hladik, Michelle L., and Pillsbury, Lori
Abstract:: Terrestrial land use activities present cross-ecosystem threats to riverine and marine species and processes. Specifically, pesticide runoff can disrupt hormonal, reproductive, and developmental processes in aquatic organisms, yet non-point source pollution is difficult to trace and quantify. In Oregon, U.S.A., state and federal forestry pesticide regulations, designed to meet regulatory...
Resource Type:: Article

Quantifying uncertainty in exposure to coastal hazards associated with both climate change and adaptation strategies : a U.S. Pacific Northwest alternative coastal futures analysis

Creator:: Mills, Alexis K., Ruggiero, Peter, Bolte, John P., Serafin, Katherine A., and Lipiec, Eva
Abstract:: Coastal communities face heightened risk to coastal flooding and erosion hazards due to sea-level rise, changing storminess patterns, and evolving human development pressures. Incorporating uncertainty associated with both climate change and the range of possible adaptation measures is essential for projecting the evolving exposure to coastal flooding and erosion, as...
Resource Type:: Article

The silence of the clams: Forestry registered pesticides as multiple stressors on soft-shell clams

Creator:: Tissot, Alexandra G., Granek, Elise F., Thompson, Anne W., Hladik, Michelle L., Moran, Patrick W., and Scully-Engelmeyer, Kaega
Abstract:: Contaminants are ubiquitous in the environment, often reaching aquatic systems. Combinations of forestry use pesticides have been detected in both water and aquatic organism tissue samples in coastal systems. Yet, most toxicological studies focus on the effects of these pesticides individually, at high doses, and over acute time periods, which,...
Resource Type:: Article

Zooplankton in Upper Willamette Reservoirs, 2015

Creator:: Murphy, Christina A., Pollock, Amanda M.M., Strecker, Angela L., and Johnson, Sherri L.
Abstract:: Samples targeting crustacean zooplankton were collected from 3 upper Willamette Basin reservoirs during May-August 2015. Van Dorn sampling devices were used to collect samples at discrete depths from Fall Creek Reservoir, Lookout Point Reservoir, and Hills Creek Reservoir. Zooplankton samples were collected during daytime and nighttime corresponding with the new...
Resource Type:: Dataset

Fall Creek Reservoir Water Quality Dataset

Creator:: Hamilton, Stephen K., Murphy, Christina A., Johnson, Sherri L., and Pollock, Amanda M.M.
Abstract:: Water chemistry measurements taken at or downstream of Fall Creek Reservoir, OR (43.9459714, -122.755765). Fall Creek is a tributary of the Middle Fork Willamette River, located approximately 20 miles SE of Eugene, Oregon, USA. Water chemistry measurements included water samples collected from the reservoir outflow (during autumn drawdown) and within...
Resource Type:: Dataset

Dielectric Engineering Boosts the Efficiency of Carbon Nanotube Photodiodes

Creator:: Senger, Mitchell J., Kefayati, Ali, Bertoni, Andrea, Perebeinos, Vasili, and Minot, Ethan D.
Abstract:: Carbon nanotube (CNT) photodiodes are a promising system for high-efficiency photocurrent generation due to the strong Coulomb interactions that can drive carrier multiplication. If the Coulomb interactions are too strong, however, exciton formation can hamper photocurrent generation. Here, we explore, experimentally and theoretically, the effect of the environmental dielectric constant...
Resource Type:: Article

Sister library cooperation : Inspiring cross-cultural capability for librarians

Creator:: Onifade, Fehintola Nike and Bridges, Laurie M.
Abstract:: This study examined the perceptions of team members of a sister library initiative between Nimbe Adedipe Library, Federal University of Agriculture, Abeokuta, Nigeria and the Valley Library, Oregon State University, Corvallis, USA. An online survey and focus group discussion were used as data collecting instruments. All of the 26 members...
Resource Type:: Article

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