Index Catalog // ScholarsArchive@OSU

Life in a Rapidly Changing Environment: The Thermal Biology of the Red-sided Garter Snake (Thamnophis sirtalis parietalis)

Creator:: Hubert, David L.
Abstract:: At a time when environmental conditions are rapidly changing, understanding how thermal extremes impact wildlife is imperative to fully understanding the consequences of climate change in natural ecosystems. While many organisms are currently impacted by rapidly warming and more erratic environmental conditions, identifying and investigating model species whose life histories...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF David L. Hubert

Harnessing Heterogeneity in Human Gut Microbiome Data

Creator:: Tataru, Christine
Abstract:: The focus of this thesis is to design, characterize, and apply novel computational methods and molecular systems to interrogate heterogeneous human gut microbiome-related phenomena. In Chapter 2, I design, implement, and characterize a method for embedding co-occurrence patterns derived from massive 16s amplicon datasets. I use this method to 1....
Resource Type:: Dissertation
Full Text:: : Harnessing Heterogeneity in Human Gut Microbiome Data Abstract approved: Maude M. David The focus of this

Exploring the Relationships Between Stable Water Isotope Ratios and Large Scale Atmospheric Circulation in Paleoclimate Settings Using an Isotope-Enabled General Circulation Model

Creator:: Niezgoda, Kyle
Abstract:: Climate model simulations and paleoclimate proxies are two tools that enable an understanding of the climate history of the Earth. When utilized together, they form a powerful paradigm for understanding past changes. Proxies are the only physical link to the past conditions on Earth, and models “fill in the gaps”...
Resource Type:: Dissertation
Full Text:: Model. Abstract approved: ______________________________________________________ David

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Creator:: Epifanio, Jenna A.
Abstract:: The South Pole ice core (SPC14), drilled in the field seasons of 2014/2015 and 2015/2016, is an intermediate length, 1,751-m ice core which preserves a 54,000-year record of past climate and atmospheric composition. The SPC14 ice core adds to the spatial grid of ice cores in Antarctica extending into the...
Resource Type:: Dissertation
Full Text:: , David G. Ferris7, and Joshua A. Kennedy10 1College of Earth, Ocean, and Atmospheric Sciences, Oregon

Spatiotemporal Distributions of Bacteria in the Cheddar Production Environment

Creator:: Johnson, Jared D.
Abstract:: Given the many significant roles that bacteria play in modern food manufacturing, it is crucial that we have a fundamental understanding of how bacterial communities assemble and behave in the food manufacturing environment. The focus of this dissertation was to investigate both the spatial and temporal distributions of microbial communities...
Resource Type:: Dissertation
Full Text:: Science 101 (4): 3611–29. https://doi.org/10.3168/jds.2017-13345. Bokulich, Nicholas A., and David A

Forests on the Move: Forest Inventories and Wood Anatomy from the Fragmented Forests of Guairá, Paraguarí, and Central, Paraguay

Creator:: Cervantes, Andrew G.
Abstract:: Forest composition in Paraguay has been in a state of change for the past half century due to land management practices, forest fragmentation, and deforestation for agriculture. How these factors affect dendrological diversity and wood anatomy in Paraguay is not well understood. This thesis documents Paraguayan forest composition on the...
Resource Type:: Masters Thesis
Full Text:: David Trapp. In Oñondivepa: Don Ramon, and RPCV Andrés Gonzales. In San Agustín: Don Carlos Malloquin

Effects of Diversity on Emerging Infectious Diseases of Amphibians

Creator:: Snyder, Paul W.
Abstract:: Species declines and extinctions have been recorded across taxa as evidence of an ongoing global biodiversity crisis. Amphibians are at the forefront of these declines with nearly one third of amphibian species estimated to be at risk of extinction. While many factors contribute to population declines and extinctions, the role...
Resource Type:: Dissertation
Full Text:: and supported through this process. David Fugit, my oldest friend. Dr. Erin Gorsich for letting Nick

Evolutionary Dynamics of Genomes and Endosymbionts in Plant-Parasitic Nematodes

Creator:: Wasala, Wasala Mudiyanselage Sulochana K.
Abstract:: Plant-parasitic nematodes cause more than US $100 billion in annual agriculture loss worldwide. Thorough knowledge of their genetic diversity, and interactions with endosymbionts and environment have the potential to provide valuable insights into the basic biology of these animals, and assist future efforts aimed at management of these plant parasites....
Resource Type:: Dissertation
Full Text:: scientist as well as and a person. I am grateful to Profs. Virginia Weis, David Maddison, Inga Zasada

Cation Substitution Effects in Complex Transition Metal Oxides

Creator:: Duell, Brett A.
Abstract:: Understanding structural evolution in solids as composition changes is essential to materials properties prediction. Such structure-properties relationships are the theme of solid state chemistry. Materials scientists and chemists have utilized an abundance of simple crystal structures to enhance understanding of chemical and structural origins of properties in materials for decades....
Resource Type:: Dissertation
Full Text:: committee members, Drs. Michael Lerner, David Ji, Brady Gibbons, and William Warnes for the time they have

Total Synthesis of Cephalotaxus Alkaloids and Synthetic Studies toward Bazzanin K

Creator:: Ju, Xuan
Abstract:: Dearomatization reactions exist broadly in biosynthesis and chemical synthesis. The highly functionalized atoms of arenes can be masked by it aromaticity, and upon dearomatization, those reactive atoms can be readily applied to bond formation and further manipulation. The total synthesis of (–)-cephalotaxine and (–)- homoharringtonine is described via an oxidative...
Resource Type:: Dissertation
Full Text:: ) Semmelhack, M. F.; Chong, B. P.; Stauffer, R. D.; Rogerson, T. D.; Chong, A.; Jones, L. D. J. Am. Chem. Soc

ScholarsArchive@OSU

Life in a Rapidly Changing Environment: The Thermal Biology of the Red-sided Garter Snake (Thamnophis sirtalis parietalis)

Harnessing Heterogeneity in Human Gut Microbiome Data

Exploring the Relationships Between Stable Water Isotope Ratios and Large Scale Atmospheric Circulation in Paleoclimate Settings Using an Isotope-Enabled General Circulation Model

Understanding Signals of the South Pole Ice Core: Chronology, Climate, and Firn Processes

Spatiotemporal Distributions of Bacteria in the Cheddar Production Environment

Forests on the Move: Forest Inventories and Wood Anatomy from the Fragmented Forests of Guairá, Paraguarí, and Central, Paraguay

Effects of Diversity on Emerging Infectious Diseases of Amphibians

Evolutionary Dynamics of Genomes and Endosymbionts in Plant-Parasitic Nematodes

Cation Substitution Effects in Complex Transition Metal Oxides

Total Synthesis of Cephalotaxus Alkaloids and Synthetic Studies toward Bazzanin K

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