Geobiology

2026 · 2025 · 2024 · 2023 · 2021 · 2017 · 2016 · 2015 · 2014 · 2013 · 2011 · 2008 · 2007 · 2005 · 1977 · 1973 · 1969 · 1961

2026

• Betts, Makayla Nicole — Exploring the Preservation of Biosignatures in Extreme Environments (Dissertation (Ph.D.))
• Kalucha, Hemani — Geochemistry of Mars and Implications for Organic Carbon Preservation - Observations from Rover Data and Terrestrial Analogs (Dissertation (Ph.D.))
• Marlin, Theresa — From Ocean Floor to Stratosphere: Investigating Astrobiologically Relevant Processes and Molecules on Solar System Bodies (Dissertation (Ph.D.))

2025

• Dion-Kirschner, Hannah Henning — Carbon in Flux: Measuring the Climate Sensitivity of Terrestrial Greenhouse Gas Uptake (Dissertation (Ph.D.))
• Isella, Emma Xueqian — Investigating the Biological Mechanism of N₂O Emissions from Arid Southern Californian Drylands (Senior thesis (Major))
• Parra, Sergio Alexander — Location, Location, Location: Insights from Spatially-Resolved Observations of Marine Seep Carbonate Ecosystems and Carbonaceous Chondrite Surfaces (Dissertation (Ph.D.))
• Silverman, Shaelyn Nicole — From Pure Cultures to Particles: Tracing Microbial Metabolism Through Amino Acid ²H/¹H Ratios (Dissertation (Ph.D.))

2024

• Lim, Sujung — The Impact of Energy Availability and Substrate Complexity on Anaerobic Microbial Communities in Marine Sediment (Dissertation (Ph.D.))
• Mueller, Elliott Patrick — Carbon Currencies: Isotopic Constraints on the Biogeochemistry of Organic Acids (Dissertation (Ph.D.))

2023

• Osorio Rodríguez, Daniela — Microbial Transformations of Sulfur: Environmental and (Paleo) Ecological Implications (Dissertation (Ph.D.))
• Sanders, Cecilia Brooke — Geological and Geochemical Explorations of the Salitre Formation Phosphorite, Eastern Brazil (Dissertation (Ph.D.))

2021

• Chadwick, Grayson Lee — How to Beat Diffusion: Explorations of Energetics and Spatial Relationships in Microbial Ecosystems (Dissertation (Ph.D.))
• Lingappa, Usha Farey — Manganese Through Time and Other Stories Concerning Cyanobacteria and the World Around Them (Dissertation (Ph.D.))
• Metcalfe, Kyle Shuhert — Symbiotic Diversity and Mineral-Associated Microbial Ecology in Marine Microbiomes (Dissertation (Ph.D.))
• Mullin, Sean William Alexander — Spatial and Temporal Dynamics of Microorganisms Living Along Steep Energy Gradients and Implications for Ecology and Geologic Preservation in the Deep Biosphere (Dissertation (Ph.D.))

2017

• Ward, Lewis Michael — Microbial Evolution and the Rise of Oxygen: The Roles of Contingency and Context in Shaping the Biosphere through Time (Dissertation (Ph.D.))

2016

• Marlow, Jeffrey James — Physical, Metabolic, and Energetic Investigations of Methane-Metabolizing Microbial Communities (Dissertation (Ph.D.))
• Slotznick, Sarah Pearl — Coupling Textural, Magnetic, and Modeling Techniques to Understand Precambrian Paleoenvironments (Dissertation (Ph.D.))
• Trembath-Reichert, Elizabeth — Molecular and Geochemical Insights into Microbial Life Centimeters to Kilometers Below the Seafloor (Dissertation (Ph.D.))

2015

• Johnson, Jena Elaine — Manganese: Minerals, Microbes, and the Evolution of Oxygenic Photosynthesis (Dissertation (Ph.D.))
• Kopf, Sebastian Hermann — From Lakes to Lungs: Assessing Microbial Activity in Diverse Environments (Dissertation (Ph.D.))

2014

• Stolper, Daniel Aaron — New Insights into the Formation and Modification of Carbonate-Bearing Minerals and Methane Gas in Geological Systems using Multiply Substituted Isotopologues (Dissertation (Ph.D.))

2013

• Dekas, Anne Elizabeth — Diazotrophy in the Deep: An Analysis of the Distribution, Magnitude, Geochemical Controls, and Biological Mediators of Deep-Sea Benthic Nitrogen Fixation (Dissertation (Ph.D.))
• Osburn, Magdalena Rose — Isotopic Proxies for Microbial and Environmental Change: Insights from Hydrogen Isotopes and the Ediacaran Khufai Formation (Dissertation (Ph.D.))

2011

• Liu, Hanna Ken-Yuin — The Abundance and Behavior of Viruses in Ancient Seawater and Modern Iron-rich Environments (Senior thesis (Major))

2008

• Nash, Cody Zane — Mechanisms and Evolution of Magnetotactic Bacteria (Dissertation (Ph.D.))

2007

• Jiao, Yongqin — Physiological and Mechanistic Studies of Phototrophic Fe(II) Oxidation in Purple Non-sulfur Bacteria (Dissertation (Ph.D.))
• Kopp, Robert Evans, III — The Identification and Interpretation of Microbial Biogeomagnetism (Dissertation (Ph.D.))

2005

• Bosak, Tanja — Laboratory Models of Microbial Biosignatures in Carbonate Rocks (Dissertation (Ph.D.))

1977

• Weiner, Stephen — Aspects of the Biochemistry of the Organic Matrix of Extant and Fossil Mollusks (Dissertation (Ph.D.))

1973

• Squires, Richard Lane — Burial Environment, Diagenesis, Mineralogy, and Mg & Sr Contents of Skeletal Carbonates in the Buckhorn Asphalt of Middle Pennsylvanian Age, Arbuckle Mountains, Oklahoma (Dissertation (Ph.D.))

1969

• Clark, George Richmond — Shell Characteristics of the Family Pectinidae as Environmental Indicators (Dissertation (Ph.D.))

1961

• Dodd, James Robert — Paleoecological Implications of the Mineralogy, Structure, and Strontium and Magnesium Contents of Shells of the West Coast of the Genus Mytilus (Dissertation (Ph.D.))