Index Catalog // ScholarsArchive@OSU

Biogeochemical Processing of Freshwater Carbon in the Anthropocene

Creator:: Buser, Jessica Z.
Abstract:: Freshwater systems cycle carbon along a spatial and temporal biogeochemical continuum, across which ecosystem processes contribute to transformations of organic matter (OM). Various ecological constraints impact rates OM transformation and production and consumption of the energetic end of respiration, methane. Microbiological processing and complete reduction of carbon substrates to methane...
Resource Type:: Dissertation
Full Text:: Anthropocene Abstract approved: ______________________________________________________ Frederick S

Diversity and Activity of Microbial Extracellular Peptidases in Soil

Creator:: Nguyen, Trang T. H.
Abstract:: Soil nitrogen exists largely as organic matter, including plant liter, dead animal matter, and microbial necromass. About 90% of soil organic nitrogen is proteinaceous material that is too large for plants and microorganisms to assimilate directly. Protein depolymerization therefore plays a critical role in mobilizing this organic source of nitrogen,...
Resource Type:: Dissertation
Full Text:: the average numbers of each peptidase super-family (S for serine, M for metallo-, C for cysteine, T

Glacial to holocene watermass and continental weathering reconstructions from the Southeast Pacific

Creator:: Muratli, Jesse M.
Abstract:: Sediments of the central Chile margin record changes in ocean circulation and continental erosion associated with large–scale climate change. Here Antarctic– influenced Southern Ocean currents flow equatorward, forming a link between the high– and low–latitude oceans. Part of this link, Antarctic Intermediate Water, is an important conduit that ventilates South...
Resource Type:: Masters Thesis
Full Text:: . 21 Mohtadi, M., Rossel, P., Lange, C. B., Pantoja, S., Böning, P., Repeta, D. J., Grunwald, M

Characterization of Milk Hauling Practices and Their Impact on Raw Milk Microbiological Quality

Creator:: Kuhn, Eva
Abstract:: The dairy industry has indicated that milk hauling sporadically compromises milk quality, but often the reason is unknown. Milk hauling practices are an underexplored area of research, and are in need of attention because during hauling milk is most exposed to the external environment in comparison with any other step...
Resource Type:: Masters Thesis
Full Text:: representative milk sample from the bulk tank(s), and accurately measure the milk to ensure the transaction

Ecological Consequences of Marine Debris: Understanding Large-Scale Species Transport on Tsunami Debris and Research Priorities in Oregon

Creator:: Gillman, Reva A.
Abstract:: The release of marine debris into the oceans and seas is a global issue of growing concern. These materials are harmful to marine environments and can also transport non-native species to novel habitats. Non-native species floating on marine litter is one of the lesser known impacts associated with marine debris....
Resource Type:: Masters Thesis
Full Text:: Newman S, Watkins E, Farmer A. The economics of marine litter. In: Bergmann M, Gutow L, Klages M

Nearshore distribution of barnacle and mussel larvae and oceanographic mechanisms of onshore transport and delivery

Creator:: Tyburczy, Joe A.
Abstract:: Recruitment of larvae from the plankton is an important determinant of community structure in marine systems. In populations of many marine species, recruitment determines the basic demographic parameters of immigration, emigration, and reproduction. Moreover, the effect of recruitment as an "ecological subsidy" can determine the strength of interactions among species...
Resource Type:: Dissertation
Full Text:: Barilotti, Alexis Howard, Cathy Preston, Randy Finke, Jose Pantoja, Mirtala Parragué-Guzmán, and Elliot

Structure and Dynamics of the Canine (Canis familiaris) Nasal Microbiome

Creator:: Knorr, Elizabeth
Abstract:: The diverse community of bacteria living within and on host organisms, known as the microbiome, has an important role in maintaining host health. Dysbiosis, known as a change in the healthy community of the microbiome, has been associated with a number of diseases across host organisms and body sites including...
Resource Type:: Dissertation
Full Text:: , Kroll S, Morhenn C, Kim S-T, Weigel D, Kemen EM. 2016. Microbial Hub Taxa Link Host and Abiotic Factors

Nutrient management of blackberry cultivars grown in organic production systems

Creator:: Fernandez-Salvador, Javier A.
Abstract:: The impact of fertilizer source and cultivar on growth, fruit quality, and yield was evaluated in organic blackberry (Rubus L. subgenus Rubus Watson) from 2011-2013 in three studies. In all studies, plants were drip irrigated, and weeds were managed using a woven polypropylene, permeable landscape fabric (weed mat). At a...
Resource Type:: Masters Thesis
Full Text:: ), sulfur (S), boron (B), iron (Fe), manganese (Mn), Cu, Zn, and aluminium (Al) concentration. Total leaf

Mitigating Microplastics : Development and Evaluation of a Middle School Curriculum

Creator:: Kowalski, Marie
Abstract:: Microplastics, plastic marine debris less than 5 mm in size, is a threat to the health of our oceans. One important way to reduce microplastics in our oceans is to educate people about the issue, particularly future decision-makers. In this study, a middle school curriculum was developed using current scientific...
Resource Type:: Masters Thesis

Optics, structure and variability of the offshore Columbia River plume

Creator:: Saldías, Gonzalo
Abstract:: The Columbia River delivers the greatest amount of freshwater to the coastal ocean along the U.S. Pacific coast. This freshwater forms the Columbia River plume, a mesoscale plume with significant implications on coastal ocean physical, biological, chemical, and geological processes. The plume is transported south and offshore during the upwelling...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Gonzalo S. Sald́ıas for

Investigating the Effect of Using Mobile Touchscreen Device on Children's Tactile Skills

Creator:: Almurshed, Rana
Abstract:: To users, mobile touchscreen devices have appealing characteristics; among these characteristics is intuitiveness, which leads to mobile devices being used almost everywhere by almost everyone to accomplish almost anything. This statement, to some degree, holds for children too. Despite touchscreen devices’ intuitiveness and popularity, we don’t know much about how...
Resource Type:: Dissertation
Full Text:: using two fingers (see Figure1 (b)). Tilt, on the other hand, is a gesture done with hand(s) rather

LGBTQ Latinx Student Activist and Leaders in the State of Oregon: A Preliminary Study

Creator:: Zayas, Minerva
Abstract:: In 2016, the Oregon Community Foundation reported that twelve percent of Latinx folks graduated with their bachelor’s and/or master’s degree compared to the 31 percent of White counterparts (Latinos in Oregon Report, 2016). While Latinx students continue to be the largest minority in the United States, Latinx students enroll in...
Resource Type:: Masters Thesis
Full Text:: Ricans migrated to the United States during the early 1900’s and were granted U.S. citizenship in 1917

The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Creator:: Eerkes-Medrano, Dafne I.
Abstract:: The high productivity of Eastern Boundary Upwelling Ecosystems (EBUE), some of the most productive ecosystems in the globe, is attributed to the nutrient rich waters brought up through upwelling. Climate change scenarios for coastal upwelling systems, predict an intensification of coastal upwelling winds. Associated with intensification in upwelling are biogeochemical...
Resource Type:: Dissertation
Full Text:: 1960’s (Vaquer-Sunyer and Duarte 2008). Reduction in dissolved oxygen in some coastal waters has been

Inclusion Fusion and Genetic Recombination: Bridging the Gap Between the Chlamydiae

Creator:: Garvin, Lotisha E.
Abstract:: Chlamydia is an obligate intracellular bacterial pathogen that causes a variety of disease in animals and humans worldwide. Veterinary chlamydial pathogens can lead to chronic infections and serious consequences that result in millions of dollars of losses in animals and resources in the agricultural industry in countries that rear ruminants....
Resource Type:: Dissertation

The Space Between: How We Understood, Valued, and Governed the Ocean Through the Process of Marine Science and Emerging Technologies

Creator:: Newton, Samantha
Abstract:: Ian Angell, in the New Barbarian Manifesto, said “A ‘brave new world’ is being forced upon unsuspecting societies by advances in information technology.” It would seem then, that technological advances happen automatically and have a life of their own. There is a logic to technological advancements that is outside human...
Resource Type:: Masters Thesis
Full Text:: that concepts of the 11 Thomas S. Kuhn, The

Studies of Chitin Nanofiber Production and Photoluminescent Biosilica from Diatoms with and without Germanium

Creator:: LeDuff, Paul A.
Abstract:: There is significant interest in harnessing the biosynthetic capacities of photosynthetic diatom microalgae for the production of unique bioinspired nanomaterials. Specifically, this research focuses on understanding the photoluminescent properties of diatom biosilica and β-chitin nanofiber production in diatoms. Diatoms are single-celled microalgae that possess intricately patterned biosilica shells called, frustules....
Resource Type:: Dissertation
Full Text:: Cyclotella sp. 6 References [1] N. S. Lewis and D. G. Nocera, “Powering the Planet

Pyoluteorin as a signaling molecule regulating secondary metabolite production and transport genes in Pseudomonas fluorescens Pf-5

Creator:: Brodhagen, Marion L.
Abstract:: A major factor in the ability of Pseudomonas fluorescens Pf-5 to act as a biological control agent is its production of antibiotics, including pyoluteorin (PLT), 2,4-diacetylphloroglucinol (2,4-DAPG) and pyrrolnitrin (PRN). The data provided in this thesis demonstrate that the presence of any of these antibiotics in the extracellular milieu affects...
Resource Type:: Dissertation
Full Text:: , affordable, organic pesticides introduced in the 1940's were powerfully effective at stemming crop yield

Molecular Nutrition in Dairy Cows: Modulation of Peroxisome Proliferator-Activated Receptors through Nutrigenomic Approaches

Creator:: Busato, Sebastiano
Abstract:: Nutrigenomics is a branch of nutrition that seeks to elucidate the relationship between dietary components and expression of genes. Certain bioactive compounds present in the diet have the potential to modulate transcription of genes through their interactions with ligand-dependent nuclear receptors, a series of transcriptional regulators capable of sensing intracellular...
Resource Type:: Dissertation
Full Text:: ) concentrations of lipoprotein lipase for 24h.. ............................................... 40 Figure 2.S

Genomic Resource Development for European Hazelnut (Corylus avellana L.)

Creator:: Rowley, Erik R.
Abstract:: European hazelnut (Corylus avellana L.) is an important crop Oregon's Willamette Valley, producing 99% of the hazelnuts grown in North America and brings over US $60 million dollars to the region annually. Hazelnuts are rich in fiber and vitamins, as well in demand by consumers due to their popularity as...
Resource Type:: Dissertation
Full Text:: ....................................................... Pollen incompatibility S-loci................................................ Paclitaxel biosynthesis

ScholarsArchive@OSU

Biogeochemical Processing of Freshwater Carbon in the Anthropocene

Diversity and Activity of Microbial Extracellular Peptidases in Soil

Glacial to holocene watermass and continental weathering reconstructions from the Southeast Pacific

Characterization of Milk Hauling Practices and Their Impact on Raw Milk Microbiological Quality

Ecological Consequences of Marine Debris: Understanding Large-Scale Species Transport on Tsunami Debris and Research Priorities in Oregon

Nearshore distribution of barnacle and mussel larvae and oceanographic mechanisms of onshore transport and delivery

Structure and Dynamics of the Canine (Canis familiaris) Nasal Microbiome

Nutrient management of blackberry cultivars grown in organic production systems

Mitigating Microplastics : Development and Evaluation of a Middle School Curriculum

Optics, structure and variability of the offshore Columbia River plume

Investigating the Effect of Using Mobile Touchscreen Device on Children's Tactile Skills

LGBTQ Latinx Student Activist and Leaders in the State of Oregon: A Preliminary Study

The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Inclusion Fusion and Genetic Recombination: Bridging the Gap Between the Chlamydiae

The Space Between: How We Understood, Valued, and Governed the Ocean Through the Process of Marine Science and Emerging Technologies

Studies of Chitin Nanofiber Production and Photoluminescent Biosilica from Diatoms with and without Germanium

Pyoluteorin as a signaling molecule regulating secondary metabolite production and transport genes in Pseudomonas fluorescens Pf-5

Molecular Nutrition in Dairy Cows: Modulation of Peroxisome Proliferator-Activated Receptors through Nutrigenomic Approaches

Genomic Resource Development for European Hazelnut (Corylus avellana L.)

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