subject:(Oregon)

Oregon State University

1. Gould, Micah. Low Maintenance Strategies and Challenges within Oregon School Landscapes.

Degree: MS, 2017, Oregon State University

URL: http://hdl.handle.net/1957/61889

► Ornamental landscapes require considerable amounts of inputs, including but not limited to irrigation, mowing or pruning, fertilization, and pest management. However, school systems have limited… (more)

Subjects/Keywords: Oregon

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APA (6^th Edition):

Gould, M. (2017). Low Maintenance Strategies and Challenges within Oregon School Landscapes. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/61889

Chicago Manual of Style (16^th Edition):

Gould, Micah. “Low Maintenance Strategies and Challenges within Oregon School Landscapes.” 2017. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/61889.

MLA Handbook (7^th Edition):

Gould, Micah. “Low Maintenance Strategies and Challenges within Oregon School Landscapes.” 2017. Web. 22 Jan 2021.

Vancouver:

Gould M. Low Maintenance Strategies and Challenges within Oregon School Landscapes. [Internet] [Masters thesis]. Oregon State University; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/61889.

Council of Science Editors:

Gould M. Low Maintenance Strategies and Challenges within Oregon School Landscapes. [Masters Thesis]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/61889

Oregon State University

2. Vail, Scott Garret. Geology and geochemistry of the Oregon mountain area, southwestern Oregon and northern California.

Degree: PhD, Geology, 2009, Oregon State University

URL: http://hdl.handle.net/1957/11963

► The Oregon Mountain area contains an ophiolitic assemblage of rocks which can he divided into two major zones on the basis of lithology: (1) spilite… (more)

▼ The Oregon Mountain area contains an ophiolitic assemblage of rocks which can he divided into two major zones on the basis of lithology: (1) spilite and diabase, with minor chert, and (2) plagiogranite, hornblende gabbro, cumulate gabbro and cumulate ultramafic rocks. The two zones have a total estimated thickness of about 4.6 km. The lower contact of the cumulate zone is gradational into the Josephine Peridotite, an extensive body of alpine-type harzburgite. The uppermost spilites are depositionally overlain by the Galice Formation (Jurassic, Kimmeridgian). Rocks in the diabase-spilite zone have undergone metamorphism similar to sea-floor burial metamorphism. Metamorphic grade progresses from zeolite facies through chlorite, epidote and actinolite zones of the greenschist facies to amphibolite facies. Prehnite-pumpellyite facies metamorphism has been superimposed on the lowest temperature assemblages, probably owing to later burial by the Galice Formation. The plutonic zone consists of a sequence of ultramafic and mafic cumulate rocks which culminates in a residue of granophyric plagiogranite. Hornbiende gabbro, in part cumulate and in part intrusive, occurs near the top of the sequence. The Josephine Peridotite consists of olivine-rich harzburgite and minor amounts of dunite, chromitite and pyroxenite, all with tectonite textures. It is essentially indistinguishable from other occurrences of alpine-type harzburgite. The Galice Formation is predominantly slaty shale. Lithic graywacke and pebbly conglomerate are volumetrically minor components. The graywacke contains abundant quartz, volcanic fragments with minor feldspar, mafic minerals and metamorphic fragments which indicate a mixed continental and volcanic arc provenance. Rocks of the Oregon Mountain area chemically resemble other well known and well studied ophiolites. Major element variations in the diabase-spilite zone are interpretable in terms of sea water interacton with mid-ocean ridge tholeiite. Increases in SiO₂, Na₂O, H₂O and FeO and decreases in CaO and MgO relative to mid-ocean ridge basalts were observed in most specimens. Less consistent changes occur in K₂O, Al₂O₃, TiO₂ and MnO. Titanium and zirconium abundances suggest affinities to mid-ocean ridge basalts, but there is some evidence of mobilization of these elements. Rare earth element distributions in rocks from the diabasespilite zone appear to have been generally unchanged during metamorphism although modification of Ce abundance has evidently occurred in one specimen. The distribution patterns are typically flat (La/Lu = 1 - 1.5) with low abundances (av. La = 15x chronditic abundance) indicating that basaltic rocks from the Oregon Mountain area have affinities with mid-ocean ridge basalts and arc tholeiites. Theoretical models indicate that a 15 to 20 percent melt of mantle source rock with a REE abundances about 2 to 3 times those of chondrites is a reasonable mechanism to produce the observed REE distributions. The ophiolite exposed in the Oregon Mountain area… Advisors/Committee Members: Dasch, E. Julius (advisor), Johnson, J. Granvilie (committee member).

Subjects/Keywords: Ophiolites – Oregon

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APA (6^th Edition):

Vail, S. G. (2009). Geology and geochemistry of the Oregon mountain area, southwestern Oregon and northern California. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/11963

Chicago Manual of Style (16^th Edition):

Vail, Scott Garret. “Geology and geochemistry of the Oregon mountain area, southwestern Oregon and northern California.” 2009. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/11963.

MLA Handbook (7^th Edition):

Vail, Scott Garret. “Geology and geochemistry of the Oregon mountain area, southwestern Oregon and northern California.” 2009. Web. 22 Jan 2021.

Vancouver:

Vail SG. Geology and geochemistry of the Oregon mountain area, southwestern Oregon and northern California. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/11963.

Council of Science Editors:

Vail SG. Geology and geochemistry of the Oregon mountain area, southwestern Oregon and northern California. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/11963

Portland State University

3. Sanford, Barry A. The West Tidewater Earthflow, Northern Oregon Coast Range.

Degree: MS(M.S.) in Geology, Geology, 2014, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/2497

► The West Tidewater earthflow, one of the largest in Oregon's history, occurred in December of 1994. The earthflow is located approximately 15 km north… (more)

▼ The West Tidewater earthflow, one of the largest in Oregon's history, occurred in December of 1994. The earthflow is located approximately 15 km north of Jewel, Oregon near the summit ofthe Northern Oregon Coast Range Mountains. The earthflow is 900 m long and 250 m wide, giving it a surface area of 9 ha, or 22 acres. Volume is 3.5 million m³. The earthflow occurred in low strength, well-bedded, tuffaceous, carbonaceous, micaceous, clay-rich mudstone, and very fine-grained, feldspathic, clay-rich siltstone of the lower Miocene age Northrup Creek Formation. The soil clay fractions contain up to 90% smectite with indications ofhalloysite. This earthflow is a reactivation ofa 650-year-old landslide (C-14 dating of uncovered buried trees). The failure mode is examined using a Janbu slope analysis and includes double wedge failure near the headscarp. High soil pore water pressure is one of the major causes of this slope failure. Rainfall levels for October, November, and December of 1994 were twice the previous five-year average. Present day groundwater level within the basin is less than one meter below ground surface. The earthflow is partially controlled by two faults of regional extent that dissect the basin near the headscarp in NW-SE and NE-SW directions. The Inceptisol soils in the basin remain moist below 20 cm year around. Soil in the basin may have been further weakened due to loss of root strength following timber harvest on the site in 1991. Soil liquid limits range from 42% to 95%, with PI values ranging from 2% to 77%. Soil clay content ranges between 18% and 30%. Direct shear tests on the mudstone and siltstone bedrock in both drained and undrained conditions produced internal friction angles of 14-18°, with cohesion values of 4 - 8 kPa. Back calculation of study area soil strength using the modified Bishop method results in a residual friction angle of 20.7°. The failure mode ofthe earthflow is from the headscarp downward and is modeled using Janbu methods. The study includes a detailed topographic map and a failure analysis of the earthflow basin. Advisors/Committee Members: Scott F. Burns.

Subjects/Keywords: Earthflows – Oregon – Oregon Coast Range; Landslides – Oregon – Oregon Coast Range; Earthflows – Oregon – Analysis; Geology; Geomorphology

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APA (6^th Edition):

Sanford, B. A. (2014). The West Tidewater Earthflow, Northern Oregon Coast Range. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/2497

Chicago Manual of Style (16^th Edition):

Sanford, Barry A. “The West Tidewater Earthflow, Northern Oregon Coast Range.” 2014. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/2497.

MLA Handbook (7^th Edition):

Sanford, Barry A. “The West Tidewater Earthflow, Northern Oregon Coast Range.” 2014. Web. 22 Jan 2021.

Vancouver:

Sanford BA. The West Tidewater Earthflow, Northern Oregon Coast Range. [Internet] [Masters thesis]. Portland State University; 2014. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/2497.

Council of Science Editors:

Sanford BA. The West Tidewater Earthflow, Northern Oregon Coast Range. [Masters Thesis]. Portland State University; 2014. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/2497

Western Washington University

4. Blue, Alexis C. Assessing economic impacts of disruption to Oregon's energy infrastructure to enhance regional disaster resilience.

Degree: MS, Environmental Studies, 2014, Western Washington University

URL: https://doi.org/10.25710/hdc2-2d59 ; https://cedar.wwu.edu/wwuet/321

► This thesis looked at regional disaster resilience with a specific focus on economic loss of energy infrastructure disruption from a seismic hazard impact. This… (more)

▼ This thesis looked at regional disaster resilience with a specific focus on economic loss of energy infrastructure disruption from a seismic hazard impact. This thesis discusses typical damage sustained by regions from energy disruption and representative earthquake damage specific to energy infrastructure. Due to its seismic risk, geographically concentrated energy infrastructure, and state-level agencies interested in energy infrastructure resilience, Oregon was used as a selected study to model energy infrastructure disruption. The economic interdependencies of Oregon's energy infrastructure, broader critical infrastructure, and Oregon's commercial economy are determined through an Input-Output (IO) economic impact model. IMPLAN provided the economic data and model software for all of Oregon for 2008. A sector aggregation scheme was developed to represent Oregon's economy as 19 sectors with emphasis on the energy infrastructure sectors of petroleum, electricity, and natural gas. The IO developed for Oregon in 2008 can be seen in Appendix A. A representation of output of the energy infrastructure sectors was then manipulated with impact scenarios in order to represent seismic hazard damage in the seismic disaster context. 16 impact scenarios were developed with varying degrees of final demand change ranging from one or all three energy infrastructure sectors being disrupted. Direct, indirect, induced, and total changes in all sectors for output, employment, labor income, and value added for every impact scenario were then analyzed. For the largest impact scenario, a total of 3% total output change for all of Oregon as well as a minimum of 2.42 jobs would be expected to be lost for every direct job lost in the energy sectors. The sectors of transport by pipeline, mining, transport by rail, and utilities will be more impacted than other sectors in Oregon's economy due to energy infrastructure disruption. Additionally, this thesis infers electricity is more important than petroleum and natural gas to everyday life in Oregon. Petroleum is important to the production of itself, the regional economy, and the production of all other energy infrastructure sectors. Therefore, regions should strive for petroleum to be the energy sector most resistant to damage and electricity to be the energy sector able to quickly regain output to enhance regional disaster resilience with respect to energy infrastructure. IO is a good first building block for more involved economic impact models but a more representative model would allow for substitution. Future work should also develop a way to incorporate IO and impact results into a recovery model for both components of resilience (loss and recovery) to be modeled. Advisors/Committee Members: Miles, Scott B., Paci-Green, Rebekah, Buckley, Patrick H..

Subjects/Keywords: Geography; Earthquake hazard analysis – Oregon; Energy industries – Oregon; Infrastructure (Economics) – Oregon; Emergency management – Oregon; Earthquakes – Economic aspects – Oregon; Oregon; masters theses

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APA (6^th Edition):

Blue, A. C. (2014). Assessing economic impacts of disruption to Oregon's energy infrastructure to enhance regional disaster resilience. (Masters Thesis). Western Washington University. Retrieved from https://doi.org/10.25710/hdc2-2d59 ; https://cedar.wwu.edu/wwuet/321

Chicago Manual of Style (16^th Edition):

Blue, Alexis C. “Assessing economic impacts of disruption to Oregon's energy infrastructure to enhance regional disaster resilience.” 2014. Masters Thesis, Western Washington University. Accessed January 22, 2021. https://doi.org/10.25710/hdc2-2d59 ; https://cedar.wwu.edu/wwuet/321.

MLA Handbook (7^th Edition):

Blue, Alexis C. “Assessing economic impacts of disruption to Oregon's energy infrastructure to enhance regional disaster resilience.” 2014. Web. 22 Jan 2021.

Vancouver:

Blue AC. Assessing economic impacts of disruption to Oregon's energy infrastructure to enhance regional disaster resilience. [Internet] [Masters thesis]. Western Washington University; 2014. [cited 2021 Jan 22]. Available from: https://doi.org/10.25710/hdc2-2d59 ; https://cedar.wwu.edu/wwuet/321.

Council of Science Editors:

Blue AC. Assessing economic impacts of disruption to Oregon's energy infrastructure to enhance regional disaster resilience. [Masters Thesis]. Western Washington University; 2014. Available from: https://doi.org/10.25710/hdc2-2d59 ; https://cedar.wwu.edu/wwuet/321

Oregon State University

5. Peterson, Ella M. Recognizing individual potters in historic Oregon sites : a visual and chemical analysis of early Oregon redware.

Degree: MAIS, 2009, Oregon State University

URL: http://hdl.handle.net/1957/10407

► This paper discusses research concerning redware vessel sherds found in an archaeological excavation at Oregon's historic Champoeg State Park, and comparative artifacts from four known… (more)

Subjects/Keywords: Oregon archaeology; Redware – Oregon – Champoeg State Park

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APA (6^th Edition):

Peterson, E. M. (2009). Recognizing individual potters in historic Oregon sites : a visual and chemical analysis of early Oregon redware. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/10407

Chicago Manual of Style (16^th Edition):

Peterson, Ella M. “Recognizing individual potters in historic Oregon sites : a visual and chemical analysis of early Oregon redware.” 2009. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/10407.

MLA Handbook (7^th Edition):

Peterson, Ella M. “Recognizing individual potters in historic Oregon sites : a visual and chemical analysis of early Oregon redware.” 2009. Web. 22 Jan 2021.

Vancouver:

Peterson EM. Recognizing individual potters in historic Oregon sites : a visual and chemical analysis of early Oregon redware. [Internet] [Masters thesis]. Oregon State University; 2009. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/10407.

Council of Science Editors:

Peterson EM. Recognizing individual potters in historic Oregon sites : a visual and chemical analysis of early Oregon redware. [Masters Thesis]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/10407

Oregon State University

6. Dlugolecki, Laura. A characterization of seasonal pools in Central Oregon's high desert.

Degree: MS, Forest Resources, 2010, Oregon State University

URL: http://hdl.handle.net/1957/15038

► Seasonal wetlands in arid and semi-arid lands provide an important source of surface water in otherwise dry lands. Central Oregon's high desert, located in the… (more)

▼ Seasonal wetlands in arid and semi-arid lands provide an important source of surface water in otherwise dry lands. Central Oregon's high desert, located in the Northern Great Basin (NGB) is dotted with hundreds of seasonal pools, locally called playas. The playas hold water or snow during parts of winter and spring but typically dry up during summer months. The mechanisms of seasonal pool hydrology, especially in the NGB, are poorly understood and have not been thoroughly examined. There is high seasonal variability and inter-annual variability in surface water amounts in the playas. Historical over-grazing and a century of fire suppression have caused serious long-term ecological damage throughout the NGB ecoregion. A large portion of playas located on the Bureau of Land Management (BLM) Prineville District lands have been excavated to capture and retain increased water for livestock use. These dug-out playas exhibit an altered ponding regime, affecting the depth and duration of water on the surface. Playa excavations have affected the hydrologic behavior on the playas, possibly altering the vegetation communities. Playa habitat is important to many different species, including the greater sage-grouse (Centrocercus urophasianus), a candidate for protection under the federal Endangered Species Act. To obtain my objectives of fostering a greater understanding of the ecology of the playa systems and to begin documenting the variability across the landscape I explored various methods to characterize and monitor the playas. I analyzed field data collected by the BLM, including ecological site inventory. Because of the knowledge gap in playa ecology, I created a method to support and improve data collection to describe these unique wetlands. I created a field manual to characterize playas that will give land managers and scientists a tool to obtain and contribute useful information about the playas. The information can be used to answer a variety of questions concerning subjects such as: the perceived sensitivity of a site for livestock grazing, the relative importance of a playa to various wildlife species, and whether or not the site is appropriate for livestock troughs or wind turbines. Working with the BLM I helped to develop experimental habitat improvement strategies. To monitor the success of the habitat improvement strategies I used Electromagnetic induction (EMI) to map subsurface soil physical properties, looking specifically at salinity to gain information about hydrologic patterns. I compared hydrologic patterns of playas before and after habitat improvement strategies using EMI data. From initial visual observations of the EMI data, water appears to be distributed across the playas in greater areal extent following habitat improvement strategies. To further characterize the variability in the playas across Central Oregon's high desert, I examined whether relative ash concentration in the soil samples had an effect on the apparent physical characteristics of a playa. There were no discernable differences… Advisors/Committee Members: Reuter, Ron (advisor), Noller, Jay (committee member).

Subjects/Keywords: Central Oregon; Vernal pools – Oregon, Eastern

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APA (6^th Edition):

Dlugolecki, L. (2010). A characterization of seasonal pools in Central Oregon's high desert. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/15038

Chicago Manual of Style (16^th Edition):

Dlugolecki, Laura. “A characterization of seasonal pools in Central Oregon's high desert.” 2010. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/15038.

MLA Handbook (7^th Edition):

Dlugolecki, Laura. “A characterization of seasonal pools in Central Oregon's high desert.” 2010. Web. 22 Jan 2021.

Vancouver:

Dlugolecki L. A characterization of seasonal pools in Central Oregon's high desert. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/15038.

Council of Science Editors:

Dlugolecki L. A characterization of seasonal pools in Central Oregon's high desert. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/15038

Oregon State University

7. Horton, Cheryl A. Top-down Influences of bald eagles on common murre populations in Oregon.

Degree: MS, Wildlife Science, 2014, Oregon State University

URL: http://hdl.handle.net/1957/49810

► Populations of organisms are influenced by both top-down (predator driven) and bottom-up (environment or resource driven) effects. Seabird research has largely focused on bottom-up factors… (more)

▼ Populations of organisms are influenced by both top-down (predator driven) and bottom-up (environment or resource driven) effects. Seabird research has largely focused on bottom-up factors influencing reproduction, with little emphasis on top-down. Our goal was to better understand top-down impacts on colonial nesting seabirds over a range of spatio-temporal scales. We studied the coast-wide distribution and abundance of a Common Murre (Uria aalge) metapopulation during two decades (1988-2006) of Bald Eagle (Haliaeetus leucocephalus) recovery in Oregon. Bald Eagles prey on seabirds, but were functionally absent during much of the 20th century. After eagles were protected under the U.S. Endangered Species Act in 1978, populations increased rapidly especially along the coast where eagles cause disturbance at seabird colonies. We also studied the effects of predation and disturbance in 2012 at three Common Murre breeding sites located in regions of varying Bald Eagle density, and at a single site over a seven year period from 2007-2013. We found regional changes in the distribution and abundance of Common Murres at breeding sites in Oregon associated with increases in coastal Bald Eagle nests over 20 years of study. Coast-wide Bald Eagle nest density was not uniform. The highest Bald Eagle nest density was found on the north coast, intermediate density on the central coast, and lowest density in on the south coast throughout the study. On the north coast, counts of murres declined by 50% between 1988 and 2006. In contrast, the number of murres counted and the number of breeding sites occupied increased substantially on the central coast, where Bald Eagle nest density was lower. Changes in the number and size of murre colonies on the north and central coast were associated with the regional density of Bald Eagle nests and initial number of murres present at each site, rather than immediate proximity of eagle nests to murre colonies. Bald Eagles were the main predators causing disturbance at individual breeding sites studied. In 2012, we found differences in disturbance frequency, colony disruption, and predator activity among three sites in regions of high, medium and low Bald Eagle abundance. Eagles caused complete reproductive failure at the north coast site (high eagle density) in 2012. In addition to Bald Eagles, California Brown Pelicans (Pelecanus occidentalis) caused disturbance at the central and south coast sites, leading to low reproductive success and failure of remaining chicks at these sites in July 2012. We found no difference in reproductive loss between disturbances caused by adult and sub-adult eagles however, secondary nest predators (gulls, corvids and vultures) had a greater overall impact on reproductive loss than primary predators. From 2007-2013, we found a negative association between mean reproductive success of murres and mean rate of eagle disturbance. Our observations provide evidence for top-down regulation of breeding populations of Common Murres in Oregon, mediated by recently recovered… Advisors/Committee Members: Dugger, Katie M. (advisor), Kennedy, Patricia L. (committee member).

Subjects/Keywords: Bald eagle – Oregon

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APA (6^th Edition):

Horton, C. A. (2014). Top-down Influences of bald eagles on common murre populations in Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/49810

Chicago Manual of Style (16^th Edition):

Horton, Cheryl A. “Top-down Influences of bald eagles on common murre populations in Oregon.” 2014. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/49810.

MLA Handbook (7^th Edition):

Horton, Cheryl A. “Top-down Influences of bald eagles on common murre populations in Oregon.” 2014. Web. 22 Jan 2021.

Vancouver:

Horton CA. Top-down Influences of bald eagles on common murre populations in Oregon. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/49810.

Council of Science Editors:

Horton CA. Top-down Influences of bald eagles on common murre populations in Oregon. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/49810

Oregon State University

8. Fisher, Paul A. (Paul Anthony). Changing student learning approaches in fundamental accounting education through the use of graphic organizers.

Degree: PhD, Education, 2013, Oregon State University

URL: http://hdl.handle.net/1957/38601

► The field of accounting has experienced dramatic changes in the past 20 years. Advances in technology and workplace requirements have changed the responsibilities in the… (more)

Subjects/Keywords: Graphic organizers – Oregon

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APA (6^th Edition):

Fisher, P. A. (. A. (2013). Changing student learning approaches in fundamental accounting education through the use of graphic organizers. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/38601

Chicago Manual of Style (16^th Edition):

Fisher, Paul A (Paul Anthony). “Changing student learning approaches in fundamental accounting education through the use of graphic organizers.” 2013. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/38601.

MLA Handbook (7^th Edition):

Fisher, Paul A (Paul Anthony). “Changing student learning approaches in fundamental accounting education through the use of graphic organizers.” 2013. Web. 22 Jan 2021.

Vancouver:

Fisher PA(A. Changing student learning approaches in fundamental accounting education through the use of graphic organizers. [Internet] [Doctoral dissertation]. Oregon State University; 2013. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/38601.

Council of Science Editors:

Fisher PA(A. Changing student learning approaches in fundamental accounting education through the use of graphic organizers. [Doctoral Dissertation]. Oregon State University; 2013. Available from: http://hdl.handle.net/1957/38601

Portland State University

9. Mickelson, Katherine A. LiDAR-Based Landslide Inventory and Susceptibility Mapping, and Differential LiDAR Analysis for the Panther Creek Watershed, Coast Range, Oregon.

Degree: MS(M.S.) in Geology, Geology, 2011, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/253

► LiDAR (Light Detection and Ranging) elevation data were collected in the Panther Creek Watershed, Yamhill County, Oregon in September and December, 2007, March, 2009… (more)

▼ LiDAR (Light Detection and Ranging) elevation data were collected in the Panther Creek Watershed, Yamhill County, Oregon in September and December, 2007, March, 2009 and March, 2010. LiDAR derived images from the March, 2009 dataset were used to map pre-historic, historic, and active landslides. Each mapped landslide was characterized as to type of movement, head scarp height, slope, failure depth, relative age, and direction. A total of 153 landslides were mapped and 81% were field checked in the study area. The majority of the landslide deposits (127 landslides) appear to have had movement in the past 150 years. Failures occur on slopes with a mean estimated pre-failure slope of 27° ± 8°. Depth to failure surfaces for shallow-seated landslides ranged from 0.75 m to 4.3 m, with an average of 2.9 m ± 0.8 m, and depth to failure surfaces for deep-seated landslides ranged from 5 m to 75m, with an average of 18 m ± 14 m. Earth flows are the most common slope process with 110 failures, comprising nearly three quarters (71%) of all mapped deposits. Elevation changes from two of the successive LiDAR data sets (December, 2007 and March, 2009) were examined to locate active landslides that occurred between the collections of the LiDAR imagery. The LiDAR-derived DEMs were subtracted from each other resulting in a differential dataset to examine changes in ground elevation. Areas with significant elevation changes were identified as potentially active landslides. Twenty-six landslides are considered active based upon differential LiDAR and field observations. Different models are used to estimate landslide susceptibility based upon landslide failure depth. Shallow-seated landslides are defined in this study as having a failure depth equal to less than 4.6 m (15 ft). Results of the shallow-seated susceptibility map show that the high susceptibility zone covers 35% and the moderate susceptibility zone covers 49% of the study area. Due to the high number of deep-seated landslides (58 landslides), a deep-seated susceptibility map was also created. Results of the deep-seated susceptibility map show that the high susceptibility zone covers 38% of the study area and the moderate susceptibility zone covers 43%. The results of this study include a detailed landslide inventory including pre-historic, historic, and active landslides and a set of susceptibility maps identifying areas of potential future landslides. Advisors/Committee Members: Scott F. Burns.

Subjects/Keywords: Landslides – Oregon – Oregon Coast Range – Analysis; Landslide hazard analysis – Oregon – Oregon Coast Range; Optical radar

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APA (6^th Edition):

Mickelson, K. A. (2011). LiDAR-Based Landslide Inventory and Susceptibility Mapping, and Differential LiDAR Analysis for the Panther Creek Watershed, Coast Range, Oregon. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/253

Chicago Manual of Style (16^th Edition):

Mickelson, Katherine A. “LiDAR-Based Landslide Inventory and Susceptibility Mapping, and Differential LiDAR Analysis for the Panther Creek Watershed, Coast Range, Oregon.” 2011. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/253.

MLA Handbook (7^th Edition):

Mickelson, Katherine A. “LiDAR-Based Landslide Inventory and Susceptibility Mapping, and Differential LiDAR Analysis for the Panther Creek Watershed, Coast Range, Oregon.” 2011. Web. 22 Jan 2021.

Vancouver:

Mickelson KA. LiDAR-Based Landslide Inventory and Susceptibility Mapping, and Differential LiDAR Analysis for the Panther Creek Watershed, Coast Range, Oregon. [Internet] [Masters thesis]. Portland State University; 2011. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/253.

Council of Science Editors:

Mickelson KA. LiDAR-Based Landslide Inventory and Susceptibility Mapping, and Differential LiDAR Analysis for the Panther Creek Watershed, Coast Range, Oregon. [Masters Thesis]. Portland State University; 2011. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/253

Oregon State University

10. Hynicka, Justin D. Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests.

Degree: MS, Forest Ecosystems and Society, 2014, Oregon State University

URL: http://hdl.handle.net/1957/52657

► Ecosystem nitrogen (N) supply strongly influences the availability and cycling of other essential nutrients in temperate forests, especially calcium (Ca). Short-term additions of N that… (more)

▼ Ecosystem nitrogen (N) supply strongly influences the availability and cycling of other essential nutrients in temperate forests, especially calcium (Ca). Short-term additions of N that exceed ecosystem demands often increase dissolved nitrate fluxes and decrease soil pH, which can stimulate soil Ca loss. However, the long-term effects of high N supply on ecosystem Ca availability are more difficult to determine, and may depend on the Ca content of bedrock and mineral soils. To address this, we examined major and trace element concentrations and ⁸⁷Sr/⁸⁶Sr ratios that trace Ca sources in precipitation, foliage, soil pools, and bedrock at 24 forested sites in the Oregon Coast Range having a wide, natural range of soil N (0.16 - 0.97 % N, 0-10 cm) on contrasting basaltic and sedimentary bedrock. Using a suite of 17 site properties, we also evaluated whether soil N variation across sites was related to the five major state-factors of soil and ecosystem development: climate, organisms, topography, parent material, and time. We found that as soil N increased across sites, its ¹⁵N/¹⁴N ratio declined towards atmospheric values, suggesting that soil N variation reflects a biotic legacy of symbiotic N fixation inputs. In contrast, soil N variation was unrelated to 17 other metrics of soil forming factors that represented climate (mean annual precipitation, mean annual temperature, and distance from the coast), topography (slope, soil depth, and abundance of coarse rock fragments), parent material (within bedrock type bulk and 1 M HNO₃ leachable rock Ca chemistry), and proxies of soil age (Hurst's redness rating, effective cation exchange capacity, Ca in non-exchangeable soil residues, chemical index of alteration, weathering index of Parker, Ca in coarse soil fragments, and soil Ca loss relative to bedrock). These analyses highlight symbiotic N-fixing red alder as a keystone organismal state-factor that produces a wide range of soil N accumulation in coastal Oregon forests. Strontium isotopes (⁸⁷Sr/⁸⁶Sr) and other geochemical analyses indicate that long-term Ca sources in foliage and exchangeable soil pools in Oregon Coast Range forests depend on an interactive effect between N availability and bedrock. Basaltic rocks contained nearly 20-times more Ca than sedimentary rocks across our sites, and this difference was reflected in Sr-isotope partitioning of base cation sources. Atmospheric sources dominated plant and soil pools in forests overlying Ca-poor sedimentary rock, regardless of variation in soil N, indicating extremely limited capacity of weathering to support forest Ca demands. In contrast, forests overlying basaltic rock obtained as much as 80% of Ca from rock weathering in low N sites, yet relied to a greater extent on atmospheric Ca as soil N increased, with less than 10% of Ca from rock weathering at sites with the highest soil N. Surprisingly, differences in fresh rock Ca content and base cation sources between sedimentary and basaltic sites was not reflected in ecosystem Ca availability, and instead… Advisors/Committee Members: Pett-Ridge, Julie (advisor), Hibbs, David (committee member).

Subjects/Keywords: Oregon Coast Range; Nutrient cycles – Oregon – Oregon Coast Range

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APA (6^th Edition):

Hynicka, J. D. (2014). Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/52657

Chicago Manual of Style (16^th Edition):

Hynicka, Justin D. “Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests.” 2014. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/52657.

MLA Handbook (7^th Edition):

Hynicka, Justin D. “Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests.” 2014. Web. 22 Jan 2021.

Vancouver:

Hynicka JD. Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/52657.

Council of Science Editors:

Hynicka JD. Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/52657

Portland State University

11. Bazzano, Jason. Differences in Sexual Dimorphism and Influences of Sexual Dichromatism on Crypsis Among Populations of the Jumping Spider Habronattus oregonensis.

Degree: MS(M.S.) in Biology, Biology, 2011, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/272

► Crypsis can be an important mechanism of predator avoidance for organisms. However, many species exhibit sexual dichromatism, in which the males possess a suite… (more)

▼ Crypsis can be an important mechanism of predator avoidance for organisms. However, many species exhibit sexual dichromatism, in which the males possess a suite of colorations in order to attract female attention. The resulting differences in crypsis between the males and females can provide insight into the relative strengths of the sexually and naturally selective forces shaping the coloration of the organism, as well as clues regarding potential sensory biases of the selecting sex. In this study, I examine variation in the coloration of four Pacific Northwest populations of the sexually dimorphic and dichromatic polygynous species of jumping spider Habronattus oregonensis and compare the coloration of different body regions of the spiders to their habitats. I also investigate differences in relative size of a male sexual ornament, the enlarged first leg tibia. Field work for this study was conducted in June and July of 2009. The three main foci of this study are 1) to compare the degree of color matching of females and their habitat to the degree of color matching of males and their habitat, evaluating whether sexual selection on males has reduced their degree of crypsis relative to that of females, 2) if there is indeed a difference in crypsis between the sexes, to gauge whether there are similar divergences from crypsis among the populations - both in the quantitative amount of divergences as well as the colorimetric direction of such divergences, and 3) whether there is any variation in sexual ornament size among populations. Male first leg tibia size is a sexual character that is presumably not influenced by habitat coloration; differences in male tibia allometry among populations would provide supporting evidence for the hypothesis that sexual selection is indeed maintaining phenotypic differences among the populations, regardless of habitat location and color. I found a high degree of conformity of hue and chroma between male and female spiders and their habitats, with three notable exceptions. The most extreme difference in coloration between spider and habitat was that of the Gorge and Siskiyou population male anteriors. The anteriors had proportionally less green and more ultraviolet reflectance than their habitat. Second, the Mt. Hood and Tillamook population male abdomens diverged from their habitat in a similar, although less pronounced manner to that of the Gorge and Siskiyou population male anteriors: they had proportionally less green and more UV reflectance. Third, female abdomens of all populations were highly variable in chroma, despite having hues that generally matched their habitat. Tibia area relative to body size of Gorge and Siskiyou population males was significantly smaller than that of Mt. Hood and Tillamook population males. The lower level of background hue matching among males compared to females implies that sexual selection has directly conflicted with natural selection, resulting in impaired crypsis. While the reduced crypsis of the Gorge and Siskiyou population males is… Advisors/Committee Members: Susan Masta.

Subjects/Keywords: Habronattus – Color – Oregon; Natural selection; Habronattus – Variation – Oregon; Jumping spiders – Habitat – Oregon; Camouflage (Biology)

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APA (6^th Edition):

Bazzano, J. (2011). Differences in Sexual Dimorphism and Influences of Sexual Dichromatism on Crypsis Among Populations of the Jumping Spider Habronattus oregonensis. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/272

Chicago Manual of Style (16^th Edition):

Bazzano, Jason. “Differences in Sexual Dimorphism and Influences of Sexual Dichromatism on Crypsis Among Populations of the Jumping Spider Habronattus oregonensis.” 2011. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/272.

MLA Handbook (7^th Edition):

Bazzano, Jason. “Differences in Sexual Dimorphism and Influences of Sexual Dichromatism on Crypsis Among Populations of the Jumping Spider Habronattus oregonensis.” 2011. Web. 22 Jan 2021.

Vancouver:

Bazzano J. Differences in Sexual Dimorphism and Influences of Sexual Dichromatism on Crypsis Among Populations of the Jumping Spider Habronattus oregonensis. [Internet] [Masters thesis]. Portland State University; 2011. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/272.

Council of Science Editors:

Bazzano J. Differences in Sexual Dimorphism and Influences of Sexual Dichromatism on Crypsis Among Populations of the Jumping Spider Habronattus oregonensis. [Masters Thesis]. Portland State University; 2011. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/272

Portland State University

12. Marshall, Naomi. At the Trail's End.

Degree: Master of Fine Arts (M.F.A.) in Creative Writing, English, 2018, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/4154

► Oregon City lies at the base of Willamette Falls. It was one of the few known points in the Oregon Territory, as the destination… (more)

Subjects/Keywords: Oregon City (Or.) – History; Frontier and pioneer life – Oregon – Oregon City; History; Nonfiction

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APA (6^th Edition):

Marshall, N. (2018). At the Trail's End. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/4154

Chicago Manual of Style (16^th Edition):

Marshall, Naomi. “At the Trail's End.” 2018. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/4154.

MLA Handbook (7^th Edition):

Marshall, Naomi. “At the Trail's End.” 2018. Web. 22 Jan 2021.

Vancouver:

Marshall N. At the Trail's End. [Internet] [Masters thesis]. Portland State University; 2018. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/4154.

Council of Science Editors:

Marshall N. At the Trail's End. [Masters Thesis]. Portland State University; 2018. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/4154

Portland State University

13. Kauppi, Erika Donnelly. A Thirst for More.

Degree: Master of Fine Arts (M.F.A.) in Creative Writing, English, 2014, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/1652

► A Thirst for Moretakes the reader on a journey into self-development culture around Portland, Oregon. The author attends events devoted to personal growth to… (more)

Subjects/Keywords: Self-realization – Oregon – Portland; Transformative learning – Oregon – Portland; Communal living – Oregon – Portland; Creative Writing

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APA (6^th Edition):

Kauppi, E. D. (2014). A Thirst for More. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/1652

Chicago Manual of Style (16^th Edition):

Kauppi, Erika Donnelly. “A Thirst for More.” 2014. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/1652.

MLA Handbook (7^th Edition):

Kauppi, Erika Donnelly. “A Thirst for More.” 2014. Web. 22 Jan 2021.

Vancouver:

Kauppi ED. A Thirst for More. [Internet] [Masters thesis]. Portland State University; 2014. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/1652.

Council of Science Editors:

Kauppi ED. A Thirst for More. [Masters Thesis]. Portland State University; 2014. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/1652

Portland State University

14. Gladhill, Kristie Werner. Exploring Traffic Safety and Urban Form in Portland, Oregon.

Degree: MS(M.S.) in Civil & Environmental Engineering, Civil and Environmental Engineering, 2011, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/86

► Street layout and design, once established, are then not easily changed. Urban form affects community development, livability, sustainability, and traffic safety. There has been… (more)

Subjects/Keywords: Cities and towns – Oregon – Portland – Design; Traffic safety – Oregon – Portland; Land use – Oregon – Portland

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APA (6^th Edition):

Gladhill, K. W. (2011). Exploring Traffic Safety and Urban Form in Portland, Oregon. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/86

Chicago Manual of Style (16^th Edition):

Gladhill, Kristie Werner. “Exploring Traffic Safety and Urban Form in Portland, Oregon.” 2011. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/86.

MLA Handbook (7^th Edition):

Gladhill, Kristie Werner. “Exploring Traffic Safety and Urban Form in Portland, Oregon.” 2011. Web. 22 Jan 2021.

Vancouver:

Gladhill KW. Exploring Traffic Safety and Urban Form in Portland, Oregon. [Internet] [Masters thesis]. Portland State University; 2011. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/86.

Council of Science Editors:

Gladhill KW. Exploring Traffic Safety and Urban Form in Portland, Oregon. [Masters Thesis]. Portland State University; 2011. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/86

Portland State University

15. Li, Huan. Assessment of an Optimal Bus Stop Spacing Model Using High Resolution Archived Stop-Level Data.

Degree: MS(M.S.) in Civil & Environmental Engineering, Civil and Environmental Engineering, 2011, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/244

► In practice, the design of bus routes and stop placement involves calculated trade-offs between service frequency, quality, and access. Increased stop density improves access… (more)

Subjects/Keywords: Bus stops – Location – Oregon – Portland; Local transit – Oregon – Portland – Management; Bus lines – Oregon – Portland – Management

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APA (6^th Edition):

Li, H. (2011). Assessment of an Optimal Bus Stop Spacing Model Using High Resolution Archived Stop-Level Data. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/244

Chicago Manual of Style (16^th Edition):

Li, Huan. “Assessment of an Optimal Bus Stop Spacing Model Using High Resolution Archived Stop-Level Data.” 2011. Masters Thesis, Portland State University. Accessed January 22, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/244.

MLA Handbook (7^th Edition):

Li, Huan. “Assessment of an Optimal Bus Stop Spacing Model Using High Resolution Archived Stop-Level Data.” 2011. Web. 22 Jan 2021.

Vancouver:

Li H. Assessment of an Optimal Bus Stop Spacing Model Using High Resolution Archived Stop-Level Data. [Internet] [Masters thesis]. Portland State University; 2011. [cited 2021 Jan 22]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/244.

Council of Science Editors:

Li H. Assessment of an Optimal Bus Stop Spacing Model Using High Resolution Archived Stop-Level Data. [Masters Thesis]. Portland State University; 2011. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/244

Oregon State University

16. Boulton, Nicholas M. Commissioning of the NDDL-40 Neutron Detection System at Oregon State University.

Degree: MS, Radiation Health Physics, 2017, Oregon State University

URL: http://hdl.handle.net/1957/60583

► The Neutron radiography facility (NRF) at Oregon State University (OSU) has been modified to begin working on the non-destructive evaluation of concrete materials to study… (more)

Subjects/Keywords: neutron; Neutron radiography – Oregon – Corvallis

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APA (6^th Edition):

Boulton, N. M. (2017). Commissioning of the NDDL-40 Neutron Detection System at Oregon State University. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/60583

Chicago Manual of Style (16^th Edition):

Boulton, Nicholas M. “Commissioning of the NDDL-40 Neutron Detection System at Oregon State University.” 2017. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/60583.

MLA Handbook (7^th Edition):

Boulton, Nicholas M. “Commissioning of the NDDL-40 Neutron Detection System at Oregon State University.” 2017. Web. 22 Jan 2021.

Vancouver:

Boulton NM. Commissioning of the NDDL-40 Neutron Detection System at Oregon State University. [Internet] [Masters thesis]. Oregon State University; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/60583.

Council of Science Editors:

Boulton NM. Commissioning of the NDDL-40 Neutron Detection System at Oregon State University. [Masters Thesis]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/60583

Oregon State University

17. Sampson-Gruener, Gregory Paul. An empirical analysis of educator beliefs related to post-industrial labor reforms in the State of Oregon.

Degree: PhD, Education, 2008, Oregon State University

URL: http://hdl.handle.net/1957/10020

► This study examines educator perceptions related to what has been termed New-Union labor reforms. The study provides a review of literature related to teacher Unionization… (more)

▼ This study examines educator perceptions related to what has been termed New-Union labor reforms. The study provides a review of literature related to teacher Unionization and details a mixed methods analysis of educator beliefs related to three specific labor reforms: (a) alternative salary structures, (b) collaborative, or interest based bargaining processes and, (c) peer review programs related to contract renewal for classroom educators. The study utilized extensive statistical methods to analyze the results of a 36 item survey. Nearly 800 educators across the State of Oregon completed the survey instrument during spring of 2008. Controls for demographics were also employed to better understand sub-group differences and account for variability in response patterns. Additionally, four interviews were conducted with practicing classroom educators to obtain individual perspectives on the labor reforms and to better understand the results of the quantitative analysis. Results revealed that respondents affirmed some components of labor reform, rejected other components of labor reform, and were split on certain features of labor reform. The most reliable finding from the study related to the outcome that educators view standardized achievement tests as subjective. As a result teachers rejected the idea of being paid for student performance. At the same time teachers were open to the possibility of raising wages through other venues of compensation. Additionally, educators endorsed the ideals of collaborative bargaining processes as opposed to industrial or traditional bargaining processes. Finally, Oregon educators did not endorse peer review for contract renewal. Rather, peer review was endorsed for professional development purposes only. Themes of local control were also evident in the response data. A discussion of the quantitative and qualitative results follows the analysis. Advisors/Committee Members: Russ-Eft, Darlene (advisor), Cohen, LeoNora (committee member).

Subjects/Keywords: Labor reforms; Teachers – Oregon – Attitudes

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APA (6^th Edition):

Sampson-Gruener, G. P. (2008). An empirical analysis of educator beliefs related to post-industrial labor reforms in the State of Oregon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/10020

Chicago Manual of Style (16^th Edition):

Sampson-Gruener, Gregory Paul. “An empirical analysis of educator beliefs related to post-industrial labor reforms in the State of Oregon.” 2008. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/10020.

MLA Handbook (7^th Edition):

Sampson-Gruener, Gregory Paul. “An empirical analysis of educator beliefs related to post-industrial labor reforms in the State of Oregon.” 2008. Web. 22 Jan 2021.

Vancouver:

Sampson-Gruener GP. An empirical analysis of educator beliefs related to post-industrial labor reforms in the State of Oregon. [Internet] [Doctoral dissertation]. Oregon State University; 2008. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/10020.

Council of Science Editors:

Sampson-Gruener GP. An empirical analysis of educator beliefs related to post-industrial labor reforms in the State of Oregon. [Doctoral Dissertation]. Oregon State University; 2008. Available from: http://hdl.handle.net/1957/10020

Oregon State University

18. Myers, Anne Hutchinson. Vertical distribution of zooplankton in the Oregon Coastal zone during an upwelling event.

Degree: MS, Oceanography, 1975, Oregon State University

URL: http://hdl.handle.net/1957/21907

Subjects/Keywords: Zooplankton – Oregon

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APA (6^th Edition):

Myers, A. H. (1975). Vertical distribution of zooplankton in the Oregon Coastal zone during an upwelling event. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/21907

Chicago Manual of Style (16^th Edition):

Myers, Anne Hutchinson. “Vertical distribution of zooplankton in the Oregon Coastal zone during an upwelling event.” 1975. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/21907.

MLA Handbook (7^th Edition):

Myers, Anne Hutchinson. “Vertical distribution of zooplankton in the Oregon Coastal zone during an upwelling event.” 1975. Web. 22 Jan 2021.

Vancouver:

Myers AH. Vertical distribution of zooplankton in the Oregon Coastal zone during an upwelling event. [Internet] [Masters thesis]. Oregon State University; 1975. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/21907.

Council of Science Editors:

Myers AH. Vertical distribution of zooplankton in the Oregon Coastal zone during an upwelling event. [Masters Thesis]. Oregon State University; 1975. Available from: http://hdl.handle.net/1957/21907

Oregon State University

19. Bennett, Max, 1963-. Timber harvesting and marketing practices on NIPF lands in western Oregon.

Degree: MS, Forest Management, 1993, Oregon State University

URL: http://hdl.handle.net/1957/11348

► Two hundred and fifty-four nonindustrial private forest landowners in western Oregon were surveyed to develop baseline information about harvesting practices and to examine the influence… (more)

Subjects/Keywords: Logging – Oregon

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APA (6^th Edition):

Bennett, Max, 1. (1993). Timber harvesting and marketing practices on NIPF lands in western Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/11348

Chicago Manual of Style (16^th Edition):

Bennett, Max, 1963-. “Timber harvesting and marketing practices on NIPF lands in western Oregon.” 1993. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/11348.

MLA Handbook (7^th Edition):

Bennett, Max, 1963-. “Timber harvesting and marketing practices on NIPF lands in western Oregon.” 1993. Web. 22 Jan 2021.

Vancouver:

Bennett, Max 1. Timber harvesting and marketing practices on NIPF lands in western Oregon. [Internet] [Masters thesis]. Oregon State University; 1993. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/11348.

Council of Science Editors:

Bennett, Max 1. Timber harvesting and marketing practices on NIPF lands in western Oregon. [Masters Thesis]. Oregon State University; 1993. Available from: http://hdl.handle.net/1957/11348

Oregon State University

20. Johnson, Theresa J. The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine.

Degree: MS, Forest Science, 2005, Oregon State University

URL: http://hdl.handle.net/1957/13112

► Water treatments were applied to young ponderosa pine trees in the Eastern Cascades, Oregon during the 2003 growing season, and shade treatments were applied during… (more)

▼ Water treatments were applied to young ponderosa pine trees in the Eastern Cascades, Oregon during the 2003 growing season, and shade treatments were applied during the 2003 and 2004 growing seasons to understand how photosynthesis and soil respiration, particularly the root/rhizosphere fraction (R[subscript rrh]), would respond to increased moisture availability through watering and possibly decreased belowground supply of current photosynthate due to shading. This forest typically experiences high soil water deficits in July and August that limit photosynthesis and respiration. Watered trees were did not achieve a greater photosynthetic capacity than control (un-watered) trees, despite sustained sap flux. Soil respiration was [approximately] 140% greater in watered/un-shaded trees in 2003, but the R[subscript rrh] fraction did not show an increase until 2004. This was explained by a 30% increase in fine root biomass by 2004 and almost doubled root specific respiration rates (respiration per gram of fine root) by then end of the 2003 growing season. After an entire year of shading, carboxylation (V[subscript cmax]) of shade-developed needles was higher than un-shaded needles in early spring (May), but decreased compared to un-shaded trees by late June; Amax was consistently lower for shaded compared to un-shaded trees. Soil respiration was coupled to canopy processes, decreasing gradually through the growing season, but no effect was found on R[subscript rrh] fraction of that respiration. The ratio of foliage mass developed during treatments to fine root mass indicated that carbon allocation may have shifted belowground in shaded trees. The interaction of shade and water reduced moisture stress by decreasing moisture stress experienced in the canopy and increasing soil water availability, which allowed for minimal maintenance of photosynthesis and drastically increased soil respiration 250% compared to control trees. The long-term implications are that photosynthesis and soil respiration are strongly driven by current and previous years' photosynthetic potential and moisture availability. Predicting the response of R[subscript rrh] and its contribution to ecosystem carbon exchange to future climate change may be underestimated without accounting for environmental conditions of the previous year and carry over effects on carbon allocation and root biomass accumulation. Advisors/Committee Members: Law, Beverly E. (advisor), Brooks, Renee (committee member).

Subjects/Keywords: Photosynthesis – Oregon

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APA (6^th Edition):

Johnson, T. J. (2005). The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13112

Chicago Manual of Style (16^th Edition):

Johnson, Theresa J. “The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine.” 2005. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13112.

MLA Handbook (7^th Edition):

Johnson, Theresa J. “The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine.” 2005. Web. 22 Jan 2021.

Vancouver:

Johnson TJ. The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine. [Internet] [Masters thesis]. Oregon State University; 2005. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13112.

Council of Science Editors:

Johnson TJ. The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine. [Masters Thesis]. Oregon State University; 2005. Available from: http://hdl.handle.net/1957/13112

Oregon State University

21. Brainerd, Richard E. Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon.

Degree: MS, Forest Science, 1988, Oregon State University

URL: http://hdl.handle.net/1957/13281

► A greenhouse bioassay was used to compare ectomycorrhiza formation and diversity in soils from undisturbed and clearcut and burned areas in moist mesic, moist montane… (more)

▼ A greenhouse bioassay was used to compare ectomycorrhiza formation and diversity in soils from undisturbed and clearcut and burned areas in moist mesic, moist montane and dry montane forest types representing a gradient of environmental harshness. It was hypothesized that mycorrhiza diversity decreases with increasing environmental harshness and that stability of mycorrhiza formation following clearcutting and burning is positively related to mycorrhiza diversity. Soils were collected from three forest/clearcut pairs in each forest type. Clearcut and burned areas were well-stocked with both planted and naturally seeded conifers. The field soils were used to inoculate greenhouse planting media in which Douglas-fir and ponderosa pine seedlings were grown. Douglas-fir seedlings were grown in moist mesic and moist montane soils and ponderosa pine seedlings were grown in dry montane soils. Numbers of mycorrhizal root tips and short roots by mycorrhiza type were determined and used to calculate percent mycorrhizal colonization, mycorrhiza type proportions, diversity indices, and branching indices. For undisturbed forest soils, percent mycorrhizal colonization and diversity index of root tips increased across the gradient from the moist mesic to the dry montane sites. Numbers of total and mycorrhizal root tips were significantly higher in undisturbed soils from the dry montane type but did not differ between undisturbed moist montane and moist mesic soils. Greater numbers of total and mycorrhizal root tips in the dry montane soils may be partially due to the tendency of ponderosa pine roots to branch more than those of Douglas-fir. Two mycorrhiza types, Rhizopogon sp. and an unidentified brown type, dominated all soils and were usually accompanied by several minor types, each of which seldom comprised more than 5% of the mycorrhizal root tips. When clearcut and burned soils were compared with undisturbed forest soils within each forest type, percent mycorrhizal colonization was higher in clearcut than in undisturbed soils from both the moist mesic and the dry montane types. Numbers of mycorrhizal root tips were higher in clearcut soils from the moist mesic and the dry montane types while numbers of total root tips were higher in clearcut soils from the dry montane type only. Mycorrhizal diversity was consistently lower in clearcut soils from all forest types but in no case was the difference in diversity between forest and clearcut significant. Type composition differed between forest and clearcut soils from the dry montane type but not from the moist mesic or the moist montane types. Mycorrhiza diversity and overall stability of mycorrhiza formation following clearcutting and burning. Mycorrhiza formation was significantly higher in clearcut than in forest soils at the sites with both the highest and lowest mycorrhiza diversity. Advisors/Committee Members: Perry, David A. (advisor).

Subjects/Keywords: Ectomycorrhizas – Oregon

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APA (6^th Edition):

Brainerd, R. E. (1988). Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13281

Chicago Manual of Style (16^th Edition):

Brainerd, Richard E. “Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon.” 1988. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13281.

MLA Handbook (7^th Edition):

Brainerd, Richard E. “Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon.” 1988. Web. 22 Jan 2021.

Vancouver:

Brainerd RE. Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon. [Internet] [Masters thesis]. Oregon State University; 1988. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13281.

Council of Science Editors:

Brainerd RE. Mycorrhiza formation and diversity in undisturbed forest and clearcut and burned areas in three forest types in Oregon. [Masters Thesis]. Oregon State University; 1988. Available from: http://hdl.handle.net/1957/13281

Oregon State University

22. MacLean, James W. Geology and geochemistry of Juniper Ridge, Horsehead Mountain and Burns Butte : implications for the petrogenesis of silicic magma on the High Lava Plains, southeastern Oregon.

Degree: MS, Geology, 1994, Oregon State University

URL: http://hdl.handle.net/1957/13357

► The Juniper Ridge volcanic complex is located in the High Lava Plains Province of southeastern Oregon, a wide zone of bimodal volcanism and faulting that… (more)

▼ The Juniper Ridge volcanic complex is located in the High Lava Plains Province of southeastern Oregon, a wide zone of bimodal volcanism and faulting that marks the northern limit of widespread Basin and Range-style faulting in the northern Great Basin Province. Rhyolite dome complexes are progressively younger to the northwest along the High Lava Plains, providing a mirror-image to age-progressive silicic volcanism on the Snake River Plain in southern Idaho. 40Ar-39Ar dating of rocks from western and eastern Juniper Ridge (5.70 ± 0.02 Ma and 6.87 ± 0.02 Ma, respectively) and Burns Butte (7.75 ± 0.06 Ma) confirms the overall age progression, and shows that age relations within the Juniper Ridge complex are consistent with the trend. Horsehead Mountain (15.54 ± 0.03 Ma) predates the age progression altogether. Rocks at both eastern Juniper Ridge and western Juniper Ridge are overlain by diktytaxitic olivine basalt flows similar to regional high-alumina olivine tholeiites (HAOTs). At western Juniper Ridge, high-silica rhyolite flows overlie lower-silica rhyolite and hybrid andesite flows. At eastern Juniper Ridge, a suite of intermediate rocks ranging from basaltic andesite to dacite overlies a series of rhyolite flows. Rocks at Burns Butte consist of high-silica rhyolite, porphyritic dacite and rhyodacite, and andesite. Field and petrographic observations, including mixing textures, inclusions, and xenocrysts, along with straight-line relationships on chemical diagrams, show that the intermediate rocks at western Juniper Ridge formed by mixing between high-silica rhyolite magma and slightly evolved HAOT, probably at the base of a large silicic magma chamber. In contrast, curvilinear geochemical trends and an internally consistent four-stage major and trace element model suggest that intermediate rocks at eastern Juniper Ridge evolved in small, unconnected magma chambers by removal of olivine, plagioclase, clinopyroxene, and magnetite from a primitive HAOT parent, accompanied by contamination by up to 22 percent rhyolite. Unusually elevated concentrations of incompatible trace elements in the Squaw Butte basaltic andesite were produced by either zone refining or combined fractionation and recharge. The least-evolved rhyolites at eastern and western Juniper Ridge have lower rare-earth element concentrations than the intermediate fractionates at eastern Juniper Ridge, thus precluding an origin by crystal fractionation from the observed intermediate rocks, but have major element compositions close to those of experimental dehydration melts of amphibolite. The rhyolites probably originated as dehydration melts of an amphibolite lower crust, which were subsequently modified by removal of quartz, sanidine, plagioclase, clinopyroxene and zircon. At western Juniper Ridge, the fractionating assemblage probably included trace allanite. Rhyolites from dome complexes and ash-flow tufts of the 5- to 10-Ma portion of the ageprogressive trend show systematic trace element variations with position along… Advisors/Committee Members: Grunder, Anita L. (advisor).

Subjects/Keywords: Petrogenesis – Oregon

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APA (6^th Edition):

MacLean, J. W. (1994). Geology and geochemistry of Juniper Ridge, Horsehead Mountain and Burns Butte : implications for the petrogenesis of silicic magma on the High Lava Plains, southeastern Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13357

Chicago Manual of Style (16^th Edition):

MacLean, James W. “Geology and geochemistry of Juniper Ridge, Horsehead Mountain and Burns Butte : implications for the petrogenesis of silicic magma on the High Lava Plains, southeastern Oregon.” 1994. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13357.

MLA Handbook (7^th Edition):

MacLean, James W. “Geology and geochemistry of Juniper Ridge, Horsehead Mountain and Burns Butte : implications for the petrogenesis of silicic magma on the High Lava Plains, southeastern Oregon.” 1994. Web. 22 Jan 2021.

Vancouver:

MacLean JW. Geology and geochemistry of Juniper Ridge, Horsehead Mountain and Burns Butte : implications for the petrogenesis of silicic magma on the High Lava Plains, southeastern Oregon. [Internet] [Masters thesis]. Oregon State University; 1994. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13357.

Council of Science Editors:

MacLean JW. Geology and geochemistry of Juniper Ridge, Horsehead Mountain and Burns Butte : implications for the petrogenesis of silicic magma on the High Lava Plains, southeastern Oregon. [Masters Thesis]. Oregon State University; 1994. Available from: http://hdl.handle.net/1957/13357

Oregon State University

23. Kauffman, John Boone. Synecological effects of cattle grazing riparian ecosystems.

Degree: MS, Rangeland Resources, 1982, Oregon State University

URL: http://hdl.handle.net/1957/13517

► In 1978, a ten year project was begun to examine the synecological effects of livestock grazing riparian ecosystems. A multitude of biotic arid physical factors,… (more)

▼ In 1978, a ten year project was begun to examine the synecological effects of livestock grazing riparian ecosystems. A multitude of biotic arid physical factors, many which were unique to riparian ecosystems, interacted to form a complex and diverse riparian ecosystem. A total of 256 stands of vegetation representing 60 discrete plant communities were identified. Twenty species of mammals and 81 species of birds were sited utilizing the area from May-October. Approximately one-half of the riparian vegetation bordering Catherine Creek was excluded from livestock grazing. Ten plant communities were intensively sampled in grazed and exclosed areas during three growing seasons to determine some of the impacts a late season grazing scheme has on riparian vegetation. Three plant communities displayed significant species composition and productivity differences. These commmunities were within' the meadow and Doug1az Hawthorne (Crataegus douglasii) vegetation types and were utilized more heavily by livestock than any other communities sampled. In addition succession appeared to be retarded by grazing on gravel bars dominated by black cottonwood (Populus trichocarpa) saplings and willows (Salix spp.). Few differences were recorded in other plant communities sampled. Late season grazing had few short term impacts on avian populations censused from May-October. There was a significant decrease in small mammal populations after grazing in all communities sampled. However, by the following August small mammals had recolonized the grazed plant communities in essentially the same species composition and densities. Grazed areas had significantly greater streambank losses than areas that were not grazed. While overwinter losses accounted for much of the streambank erosion, the erosion and disturbance caused by livestock grazing and trampling was enough to create significantly greater streambank losses in grazed areas compared to ungrazed areas. Positive characteristics of a late season grazing scheme on. the riparian zone included increased late season livestock production, good plant vigor and productivity, minimal soil disturbance, and minimal short term disturbance to wildlife populations dependent on riparian ecosystems. Advisors/Committee Members: Krueger, William C. (advisor), Crawford, John (committee member).

Subjects/Keywords: Grazing – Oregon

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APA (6^th Edition):

Kauffman, J. B. (1982). Synecological effects of cattle grazing riparian ecosystems. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13517

Chicago Manual of Style (16^th Edition):

Kauffman, John Boone. “Synecological effects of cattle grazing riparian ecosystems.” 1982. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13517.

MLA Handbook (7^th Edition):

Kauffman, John Boone. “Synecological effects of cattle grazing riparian ecosystems.” 1982. Web. 22 Jan 2021.

Vancouver:

Kauffman JB. Synecological effects of cattle grazing riparian ecosystems. [Internet] [Masters thesis]. Oregon State University; 1982. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13517.

Council of Science Editors:

Kauffman JB. Synecological effects of cattle grazing riparian ecosystems. [Masters Thesis]. Oregon State University; 1982. Available from: http://hdl.handle.net/1957/13517

Oregon State University

24. Rice, Janine, M. Forest-meadow dynamics in the central western Oregon Cascades : topographic, biotic, and environmental change effects.

Degree: PhD, Geography, 2009, Oregon State University

URL: http://hdl.handle.net/1957/13781

► Montane meadows comprise a small area of the predominantly forested landscape of the Oregon Cascade Range. Tree encroachment in the last century in these areas… (more)

▼ Montane meadows comprise a small area of the predominantly forested landscape of the Oregon Cascade Range. Tree encroachment in the last century in these areas has threatened a loss of biodiversity and habitat. Climate change in the coming century may accelerate tree encroachment into meadows, and exacerbate biodiversity loss. Multiple environmental factors of topography, biotic interactions, climate, and disturbance, whose interactions and impacts are unclear, influence forest encroachment into meadows. This dissertation examines these complex interactions and factors in two montane meadow ecosystems at Lookout (44º 22′N, 122º 13′W) of the Western Cascade Range and Bunchgrass (44º 17′N, 121º 57′W) of the High Cascade Range of Oregon. A change detection analysis quantifies how topographic factors and proximity to edge were related to tree encroachment into the two montane meadows of the Cascade Range of Oregon. Areas that have experienced tree encroachment were identified and partitioned by distance to forest edge, aspect, and slope class using historical air photo interpretation over 54 years from 1946, 1967, and 2000 at Lookout and Bunchgrass meadows in the western Cascades of Oregon. Meadow area decreased by more than 1% per year, with a net decrease of 60%, and a net loss of 22 ha at Lookout Meadow and 28 ha at Bunchgrass Meadow from 1946 to 2000. From 72% (Lookout) to 77% (Bunchgrass) of meadow area within 5 m of a forest edge became forest by 2000. Twothirds to three-quarters of meadow area on south and west aspects at both sites converted to forest from 1946 to 2000. Two-thirds of meadow conversion to forest from 1946 to 2000 occurred on slopes <6° at Bunchgrass Meadow, but meadow conversion to forest was more evenly distributed among slope classes at Lookout Meadow. Restoration efforts may need to focus on westerly or southerly aspects in areas < 5 m from the forest edge. The effects of biotic interactions and climate on the spatial patterns of two species (Lodgepole pine and Grand fir) were tested at Bunchgrass Meadow, a 37-ha meadow complex in the High Cascades of Oregon. A spatial analysis was used to quantify spatial patterns of more than 900 saplings and trees of these two species that had established since 1916 in a 0.21 ha early tree succession area. The light- and heat-tolerant species, Lodgepole pine, tended to establish initially and at relatively longer distances from other trees; Lodgepole seedlings avoided establishment within 2 m of >35-yr-old Grand fir. In contrast, the shade-tolerant species, Grand fir, tended to establish subsequently at relatively short distances to other trees, and was closely associated with older trees of both species. Lodgepole pine establishment was associated with warm, dry late summers, while Grand fir establishment was associated with wet springs and cool summers. Tree encroachment was regulated by both climate variability and biotic interactions responding to species’ environmental tolerances. Environmental tolerances influenced … Advisors/Committee Members: Jones, Julia, A. (advisor), Shafer, Sarah (committee member).

Subjects/Keywords: Meadows; Meadows ecology – Oregon

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APA (6^th Edition):

Rice, Janine, M. (2009). Forest-meadow dynamics in the central western Oregon Cascades : topographic, biotic, and environmental change effects. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/13781

Chicago Manual of Style (16^th Edition):

Rice, Janine, M. “Forest-meadow dynamics in the central western Oregon Cascades : topographic, biotic, and environmental change effects.” 2009. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13781.

MLA Handbook (7^th Edition):

Rice, Janine, M. “Forest-meadow dynamics in the central western Oregon Cascades : topographic, biotic, and environmental change effects.” 2009. Web. 22 Jan 2021.

Vancouver:

Rice, Janine M. Forest-meadow dynamics in the central western Oregon Cascades : topographic, biotic, and environmental change effects. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13781.

Council of Science Editors:

Rice, Janine M. Forest-meadow dynamics in the central western Oregon Cascades : topographic, biotic, and environmental change effects. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/13781

Oregon State University

25. Gregory, Christopher T. (Christopher Thomas). Temperature and infiltration characterization of a constructed wetland for wastewater treatment.

Degree: MS, Water Resources Engineering, 2010, Oregon State University

URL: http://hdl.handle.net/1957/13780

► The City of Woodburn, Oregon's Wastewater Treatment Plant (WWTP) has been investigating several natural alternatives for improving effluent quality. Based on its current National Pollution… (more)

▼ The City of Woodburn, Oregon's Wastewater Treatment Plant (WWTP) has been investigating several natural alternatives for improving effluent quality. Based on its current National Pollution Discharge Elimination System (NPDES) permit, the WWTP will require additional reduction of temperature and ammonia levels in the summer, especially in the critical month of September. The present research focuses on the performance of a 0.15 ha constructed pilot wetland during the summer and early fall of 2009. The wetland was intended to demonstrate the feasibility of using treatment wetlands to lower temperature and ammonia during an annual operational period (approximately June through October). Point sensors and a fiber optic distributed temperature sensor (DTS) were used to assess temperature treatment during the study. Infiltration was monitored to characterize the hydrogeologic behavior of the site. A wetland water budget was used to determine system-wide infiltration, and heat pulses applied to a subsurface fiber optic cable were used to assess infiltrative variability. The results showed that temperature reduction in the pilot wetland was marginal over the study period. In the September critical month, significantly more treatment occurred in the WWTP storage lagoon than in the wetland (about 4°C cooling compared to 1.2°C in the wetland). Decreasing the hydraulic retention time from 2.5 to 0.5 days in mid-September did not change the average temperature treatment. DTS data demonstrated that all temperature reduction occurred in the first half of the wetland. Infiltration was greater than outflow for most of the study, and steadily decreased through time. The highest and lowest infiltration velocities were within a factor of 2, and this range also declined between November 2008 and June 2009. Potential explanations for decreasing infiltration include soil clogging and settling. The study showed the utility of DTS for assessing the spatial and temporal variability of infiltration processes. Advisors/Committee Members: Selker, John S (advisor), Bolte, John P (committee member).

Subjects/Keywords: DTS; Constructed wetlands – Oregon – Woodburn

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APA (6^th Edition):

Gregory, C. T. (. T. (2010). Temperature and infiltration characterization of a constructed wetland for wastewater treatment. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13780

Chicago Manual of Style (16^th Edition):

Gregory, Christopher T (Christopher Thomas). “Temperature and infiltration characterization of a constructed wetland for wastewater treatment.” 2010. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13780.

MLA Handbook (7^th Edition):

Gregory, Christopher T (Christopher Thomas). “Temperature and infiltration characterization of a constructed wetland for wastewater treatment.” 2010. Web. 22 Jan 2021.

Vancouver:

Gregory CT(T. Temperature and infiltration characterization of a constructed wetland for wastewater treatment. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13780.

Council of Science Editors:

Gregory CT(T. Temperature and infiltration characterization of a constructed wetland for wastewater treatment. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/13780

Oregon State University

26. Sprick, Matthew S. Analytical determination of copper speciation in Oregon highway runoff.

Degree: MS, Chemical Engineering, 2010, Oregon State University

URL: http://hdl.handle.net/1957/13876

► Low concentrations of dissolved copper have been shown to adversely affect the olfactory system of endangered salmonids, impairing their ability to avoid predators and likely… (more)

Subjects/Keywords: Copper; Copper – Speciation – Oregon

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APA (6^th Edition):

Sprick, M. S. (2010). Analytical determination of copper speciation in Oregon highway runoff. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13876

Chicago Manual of Style (16^th Edition):

Sprick, Matthew S. “Analytical determination of copper speciation in Oregon highway runoff.” 2010. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/13876.

MLA Handbook (7^th Edition):

Sprick, Matthew S. “Analytical determination of copper speciation in Oregon highway runoff.” 2010. Web. 22 Jan 2021.

Vancouver:

Sprick MS. Analytical determination of copper speciation in Oregon highway runoff. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/13876.

Council of Science Editors:

Sprick MS. Analytical determination of copper speciation in Oregon highway runoff. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/13876

Oregon State University

27. Morris, Mark Alan, 1954-. Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects.

Degree: PhD, Entomology, 1998, Oregon State University

URL: http://hdl.handle.net/1957/19910

► Several aspects affecting population trends and overwintering of Neoseiulus fallacis (Garman) on peppermint were examined. Neoseiulus fallacis was the most abundant phytoseiid predator mite found… (more)

▼ Several aspects affecting population trends and overwintering of Neoseiulus fallacis (Garman) on peppermint were examined. Neoseiulus fallacis was the most abundant phytoseiid predator mite found in peppermint surveys throughout the western U.S. Results of pesticide exclusion and cage studies showed that N. fallacis controlled Tetranychus urticae (Koch) on peppermint in central Oregon. N. fallacis overwintered in the field mostly in dead peppermint leaves and debris. Augmenting plots with dead leaves increased overwintering survival of N. fallacis while the removal of dead leaves decreased overwintering success. Fall applied carbofuran nearly eliminated N. fallacis, leading to outbreaks of T. urticae the following spring. Fall flaming peppermint fields in central Oregon decreased densities of N. fallacis. By spring, more spider mites were found in flamed fields compared with unflamed fields. More N. fallacis motiles and eggs were found after harvest on prostrate peppermint plants compared to erect peppermint plants. There were no differences detected in the densities of spider mites on prostate compared to erect plants. The net effect of this temporal-spatial asynchrony may be to stabilize the predator-prey interaction. Because predator mites dispersed 7.5 m from unflamed peppermint plots to surrounding flamed areas, providing unflamed refuges for predator mites may reduce the negative impact of fall flaming on spider mite control. Populations of T. urticae collected from western Oregon, central Oregon and Montana were found to be dicofol resistant. Resistance to dicofol in T. urticae and disruption of N fallacis by dicofol may have contributed to increased severity of T. urticae in peppermint. Topical applications of acephate, chiorpyrifos, and oxamyl resulted in 100% mortality to N. fallacis in bean leaf disk bioassays. When applied to mint foliage in cages, acephate, chiorpyrifos, and oxamyl resulted in 43%, 81%, and 50% mortality to N. fallacis, respectively. Application of 2.5 cm of water to cages 30 minutes after pesticides were applied reduced mortality to N. fallacis by 25%. These results suggest that predator avoidance, spray coverage, or other factors may reduce the negative impact of certain pesticides on N. fallacis. Advisors/Committee Members: Berry, Ralph E. (advisor), Krantz, Gerald (committee member).

Subjects/Keywords: Peppermint – Oregon

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APA (6^th Edition):

Morris, Mark Alan, 1. (1998). Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/19910

Chicago Manual of Style (16^th Edition):

Morris, Mark Alan, 1954-. “Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects.” 1998. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/19910.

MLA Handbook (7^th Edition):

Morris, Mark Alan, 1954-. “Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects.” 1998. Web. 22 Jan 2021.

Vancouver:

Morris, Mark Alan 1. Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects. [Internet] [Doctoral dissertation]. Oregon State University; 1998. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/19910.

Council of Science Editors:

Morris, Mark Alan 1. Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects. [Doctoral Dissertation]. Oregon State University; 1998. Available from: http://hdl.handle.net/1957/19910

Oregon State University

28. McInnis, Michael Lindsay. Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon.

Degree: PhD, Rangeland Resources, 1984, Oregon State University

URL: http://hdl.handle.net/1957/19941

Subjects/Keywords: Herbivores – Oregon

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APA (6^th Edition):

McInnis, M. L. (1984). Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/19941

Chicago Manual of Style (16^th Edition):

McInnis, Michael Lindsay. “Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon.” 1984. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/19941.

MLA Handbook (7^th Edition):

McInnis, Michael Lindsay. “Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon.” 1984. Web. 22 Jan 2021.

Vancouver:

McInnis ML. Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon. [Internet] [Doctoral dissertation]. Oregon State University; 1984. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/19941.

Council of Science Editors:

McInnis ML. Ecological relationships among feral horses, cattle, and pronghorn in southeastern Oregon. [Doctoral Dissertation]. Oregon State University; 1984. Available from: http://hdl.handle.net/1957/19941

Oregon State University

29. Bertrand, Gerard A. (Gerard Adrian). A comparative study of the infauna of the Central Oregon continental shelf.

Degree: PhD, Oceanography, 1970, Oregon State University

URL: http://hdl.handle.net/1957/19968

Subjects/Keywords: Benthos – Oregon

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APA (6^th Edition):

Bertrand, G. A. (. A. (1970). A comparative study of the infauna of the Central Oregon continental shelf. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/19968

Chicago Manual of Style (16^th Edition):

Bertrand, Gerard A (Gerard Adrian). “A comparative study of the infauna of the Central Oregon continental shelf.” 1970. Doctoral Dissertation, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/19968.

MLA Handbook (7^th Edition):

Bertrand, Gerard A (Gerard Adrian). “A comparative study of the infauna of the Central Oregon continental shelf.” 1970. Web. 22 Jan 2021.

Vancouver:

Bertrand GA(A. A comparative study of the infauna of the Central Oregon continental shelf. [Internet] [Doctoral dissertation]. Oregon State University; 1970. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/19968.

Council of Science Editors:

Bertrand GA(A. A comparative study of the infauna of the Central Oregon continental shelf. [Doctoral Dissertation]. Oregon State University; 1970. Available from: http://hdl.handle.net/1957/19968

Oregon State University

30. Fabiyi, Ebenezer Adeyemi. Changes in input, output, and productivity of Oregon farms.

Degree: MS, Agricultural Economics, 1968, Oregon State University

URL: http://hdl.handle.net/1957/20764

Subjects/Keywords: Agriculture – Oregon

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APA (6^th Edition):

Fabiyi, E. A. (1968). Changes in input, output, and productivity of Oregon farms. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/20764

Chicago Manual of Style (16^th Edition):

Fabiyi, Ebenezer Adeyemi. “Changes in input, output, and productivity of Oregon farms.” 1968. Masters Thesis, Oregon State University. Accessed January 22, 2021. http://hdl.handle.net/1957/20764.

MLA Handbook (7^th Edition):

Fabiyi, Ebenezer Adeyemi. “Changes in input, output, and productivity of Oregon farms.” 1968. Web. 22 Jan 2021.

Vancouver:

Fabiyi EA. Changes in input, output, and productivity of Oregon farms. [Internet] [Masters thesis]. Oregon State University; 1968. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1957/20764.

Council of Science Editors:

Fabiyi EA. Changes in input, output, and productivity of Oregon farms. [Masters Thesis]. Oregon State University; 1968. Available from: http://hdl.handle.net/1957/20764

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