Index Catalog // ScholarsArchive@OSU

Forest canopy effects on snow depth and density of seasonal and transient mountain snowpack in a maritime snow climate

Creator:: Whidden, Ian W.
Abstract:: Relatively little is known about how various factors influence snow water storage in forested mountain landscapes in maritime (warm winter) climates. This study took advantage of multiple snow data sources including long-term data, synoptic sampling, remote sensing, and modeling to examine factors influencing snow dynamics in the H.J. Andrews Experimental...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Ian W. Whidden

Plant-Pollinator Interactions in a Changing World: Cryptic Specialization, Pollinator Movement, and Landscape Genetics of Pollinator-Dependent Plants

Creator:: Gannon, Dustin G.
Abstract:: Plant-pollinator mutualisms are one of the most prevalent and economically important mutualisms in nature. Like many other ecological systems, plant-pollinator communities are threatened by anthropogenic activity, both directly (e.g., habitat conversion and fragmentation) and indirectly (e.g., climate change). While we are aware of many of the activities that adversely impact...
Resource Type:: Dissertation
Full Text:: Kormann and F. Andrew Jones assisted with data collection and experimental design. Matt Betts designed

Spatial distribution and the probability of occurrence of beluga whales (Delphinapterus leucas) in Alaskan Arctic

Creator:: Romeo, Lucy F.
Abstract:: The known distribution of beluga whales ranges from sub-Arctic to Arctic waters where they migrate in pods in response to environmental factors such as the presence of sea ice and prey. This study uses bivariate and multivariate analysis techniques to measure how environmental covariates are associated with the spatial-temporal distribution...
Resource Type:: Masters Thesis
Full Text:: Beluga Whales (Delphinapterus leucas) in Alaskan Arctic AN ABSTRACT OF THE THESIS OF Lucy F. Romeo

Thinking Outside of the Lunchbox: Exploring Competing Narratives in the Corvallis 509J District School Lunch Policies

Creator:: Inman, Cassandra F.
Abstract:: At its inception in 1946, the United States’ National School Lunch Program (NSLP) was promoted as a success story; a boon for families navigating poverty, a means of buoying food prices by absorbing farm surplus, and a treatment for hunger in some of our country’s most vulnerable populations. Government subsidies...
Resource Type:: Capstone Project
Full Text:: Competing Narratives in the Corvallis 509J District School Lunch Policies by Cassandra F. Inman

Diversity, Generalization, and Specialization in Plant-Pollinator Networks of Montane Meadows, Western Cascades, Oregon

Creator:: Helderop, Edward
Abstract:: Despite the importance of plant-pollinator interactions for ecological communities, few long-term observational studies have been conducted of plant-pollinator networks. Using four years of plant-pollinator interaction data from 18 meadows in the Willamette National Forest, Oregon, this thesis examined how meadow size, the amount of nearby meadow habitat, weather, degree days,...
Resource Type:: Masters Thesis
Full Text:: Figueroa, U Jacob, J Jones, R Lauridsen, M Ledger, H Lewis, J Olesen, F Van Veen, P Warran and G Woodward

Influence of spatial and temporal factors on plants, pollinators and plant-pollinator interactions in montane meadows of the western Cascades Range

Creator:: Pfeiffer, Vera W.
Abstract:: Montane meadows comprise less than 5% of the landscape of the western Cascades of Oregon, but they provide habitat for diverse species of plants and pollinators. Little is known about plant-pollinator network structure at these sites. This study quantified plant-pollinator interactions over the summer of 2011, based on six observations...
Resource Type:: Masters Thesis
Full Text:: Vera W. Pfeiffer for the degree of Master of Science in Geography presented on June 1, 2012

Precipitation-snowmelt timing and snowmelt augmentation of large peak flow events, western Cascades, Oregon

Creator:: Jennings, Keith S.
Abstract:: Despite advances in the understanding of rain-on-snow storms and their resulting peak flows, little is understood about the response of snowmelt to precipitation and the relative timing of the two at multiple temporal scales within such events. To address this issue, climate, snowmelt, and streamflow data were analyzed for 26...
Resource Type:: Masters Thesis
Full Text:: Flow Events, Western Cascades, Oregon. Abstract approved: Julia A. Jones Despite advances in the

Optimal control of an underactuated bipedal robot

Creator:: Jones, Mikhail S.
Abstract:: Bipedal robots represent a unique class of control problems that combine many of the most difficult elements of nonlinear control. These robots are typically designed to be mobile and as such have limited energy and actuator authority making efficiency a prime concern. Unlike wheeled robots, legged robots must transition between...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Mikhail S. Jones for the degree of Master of Science in Mechanical Engineering

Deep desulfurization of diesel fuel using a single phase photochemical microreactor

Creator:: Jones, Jacob Aaron
Abstract:: There is an urgent need to lower the concentration of sulfur in diesel fuels. Growing concern over environmental effects caused by burning sulfur-containing diesel has led the world to higher standards in fuel refinement. Because of these lower standards, many techniques have been researched to remove sulfur containing compounds or...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jacob Aaron Jones

Mapping vegetation using landsat TM and ETM+ in Eritrea

Creator:: Iyob, Biniam
Abstract:: The objective of this study was to examine vegetation and vegetation change in Eritrea over a period from the mid 1980s to 2002 using satellite remote sensing, and relate observed changes to the recent history of drought and war in the region. Specific objectives were (1) to examine vegetation change...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________ Julia A. Jones The objective of this study was to examine vegetation and vegetation change

ScholarsArchive@OSU

Forest canopy effects on snow depth and density of seasonal and transient mountain snowpack in a maritime snow climate

Plant-Pollinator Interactions in a Changing World: Cryptic Specialization, Pollinator Movement, and Landscape Genetics of Pollinator-Dependent Plants

Spatial distribution and the probability of occurrence of beluga whales (Delphinapterus leucas) in Alaskan Arctic

Thinking Outside of the Lunchbox: Exploring Competing Narratives in the Corvallis 509J District School Lunch Policies

Diversity, Generalization, and Specialization in Plant-Pollinator Networks of Montane Meadows, Western Cascades, Oregon

Influence of spatial and temporal factors on plants, pollinators and plant-pollinator interactions in montane meadows of the western Cascades Range

Precipitation-snowmelt timing and snowmelt augmentation of large peak flow events, western Cascades, Oregon

Optimal control of an underactuated bipedal robot

Deep desulfurization of diesel fuel using a single phase photochemical microreactor

Mapping vegetation using landsat TM and ETM+ in Eritrea

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