Recent Dissertations and Theses


Computational Analysis of the Biophysical Controls on Southern Ocean Phytoplankton Ecosystem Dynamics

Tyler Rohr, Ph.D., 2019
Scott Doney, Co-Advisor
David Nicholson, Co-Advisor

The Mineralogy and Chemistry of Modern Shallow-Water and Deep-Sea Corals

Gabriela Farfan, Ph.D., 2019
Colleen Hansel, Advisor

The Production and Fate of Nitrogen Species in Deep-Sea Hydrothermal Environments

Chawalit Charoenpong, Ph.D.,2019
Scott Wankel, Advisor


Scavenging and Transport of Thorium Radioisotopes in the North Atlantic Ocean

Paul Lerner, Ph.D., 2018
Olivier Marchal, Co-Advisor
Phoebe Lam, Co-Advisor

Radium Isotopes as Tracers of Boundary Inputs of Nutrients and Trace Elements to the Coastal and Open Ocean

Lauren Kipp, Ph.D., 2018
Matthew Charette, Advisor

Biogeochemical and Phylogenetic Signals of Proterozoic and Phanerozoic Microbial Metabolisms

Danielle Gruen, Ph.D., 2018
Gregory Fournier, Advisor

The Marine Biogeochemistry of Chromium Isotopes

Simone Moos, Ph.D., 2018
Edward Boyle, Advisor

Carbon Transformations in Seafloor Serpentinization Systems

Niya Grozeva, Ph.D., 2018
Frieder Klein, Co-Advisor
Jeffrey Seewald, Co-Advisor

An Investigation of Basin-Scale Controls on Upper Ocean Export and Remineralization

Erin Black, Ph.D., 2018
Ken Buesseler, Advisor


The Geochemistry of Methane Isotopologues

David Wang, Ph.D., 2017
Shuhei Ono, Advisor

The Remineralization of Marine Organic Matter by Diverse Biological and Abiotic Processes

James Collins, Ph.D., 2017
Benjamin Van Mooy, Advisor

Geochemical Controls on the Distribution And Composition of Biogenic and Sedimentary Carbon

Emily Estes, Ph.D., 2017
Colleen Hansel, Advisor

The Cobalt Cycle in the Tropical Pacific Ocean

Nicholas Hawco, Ph.D., 2017
Mak Saito, Advisor

Understanding Terrestrial Organic Carbon Export: A Time-Series Approach

Jordon Hemingway, Ph.D., 2017
Valier Galy, Advisor

Novel Analytical Strategies for Tracing the Organic Carbon Cycle in Marine and Riverine Particles

Sarah Rosengard, Ph.D., 2017
Valier Galy, Advisor

Insight into Chemical, Biological, and Physical Processes in Coastal Waters from Dissolved Oxygen and Inert Gas Tracers

Cara Manning, Ph.D., 2017
David Nicholson, Co-Advisor
Rachel Stanley, Co-Advisor

Linking Microbial Metabolism and Organic Matter Cycling Through Metabolite Distributions in the Ocean

Winifred Johnson, Ph.D., 2017
Elizabeth Kujawinski, Advisor

Ecosystem Metabolism in Salt Marsh Tidal Creeks and Ponds: Applying Triple Oxygen Isotopes and Other Gas Tracers to Novel Environments

Evan Howard, Ph.D., 2017
Rachel Stanley, Co-Advisor
Scott Wankel, Co-Advisor


The Biogeochemistry of Lipid Derived Infochemical Signals in the Ocean

Bethanie Edwards, Ph.D., 2016
Benjamin Van Mooy, Advisor

Molecular Determination of Marine Iron Ligands by Mass Spectrometry

Rene Boiteau, Ph.D., 2016
Dan Repeta, Advisor

Late Quaternary Climate Variability and Terrestrial Carbon Cycling in Tropical South America

Kyrstin Fornace, Ph.D., 2016
Valier Galy, Co-advisor
Konrad Hughen, Co-advisor

Seasonal and Interannual Variability in the Hydrology and Geochemistry of an Outlet Glacier of the Greenland Ice Sheet

Benjamin Linhoff, Ph.D., 2016
Matthew Charette, Advisor


Using Passive Samplers to Assess Bioavailability, Toxicity, and Reactivity of Hydrophobic Organic Chemicals (HOCS)

Alexandra Patricia Tcaciuc, Ph.D., 2015
Philip Gschwend, Advisor

A Magmatic Trigger for the Paleocene Eocene Thermal Maximum?

Andrea Dubin, Ph.D., 2015
Bernhard Peucker-Ehrenbrink, Advisor

Geochemistry of Deep-Sea Hydrothermal Vent Fluids from the Mid-Cayman Rise, Caribbean Sea

Jill Marie McDermott, Ph.D., 2015
Jeffrey Seewald, Co-advisor
Christopher German, Co-advisor

Testing the Ancient Marine Redox Record From Oxygenic Photosynthesis to Photic Zone Euxina

Katherine Lousie French, Ph.D., 2015
Roger Summons, Advisor


Spatial and Temporal Dynamics of Biogeochemical Processes in the Fraser River, Canada: A Coupled Organic-Inorganic Perspective

Britta Voss, Ph.D., 2014
Bernhard Peucker-Ehrenbrink, Co-advisor
Timothy Eglinton, Co-adivsor

Heterogeneous Reservoirs in the Marine Carbon Cycle

Christopher L Follett, Ph.D., 2014
Daniel Rothman, Advisor

Temporal Variability in Chemical Cycling of the Subterranean Estuary and Associated Chemical Loading to the Coastal Ocean

Meagan Gonneea, Ph.D., 2014
Matthew Charette, Advisor

Transformations of Mercury in the Marine Water Column

Kathleen Munson, Ph.D., 2014
Carl Lamborg, Advisor

The Biogeochemistry of Marine Particulate Trace Metals

Daniel Ohnemus, Ph.D, 2014
Phoebe Lam, Advisor


Natural and Synthetic Estrogens in Wastewater Treatment Plant Effluent and the Coastal Ocean

David Griffith, Ph.D., 2013
Philip Gschwend, Advisor

The Marine Biogeochemistry of Dissolved and Colloidal Iron

Jessica Fitzsimmons, Ph.D., 2013
Ed Boyle, Advisor

Variations in Coral Reef Net Community Calcification and Aragonite Saturation State on Local and Global Scales

Whitney Bernstein, Ph.D., 2013
Konrad Hughen, Advisor

Urea and Nickel Utilization in Marine Cyanobacteria as Evaluated by Incubation, Proteomic, and Uptake Techniques

Tyler Goepfert, S.M., 2013
Mak Saito, Advisor

Evolution of Anthropogenic Pb and Pb isotopes in the Deep North Atlantic Ocean and the Indian Ocean

Jong-Mi Lee, Ph.D., 2013
Ed Boyle, Advisor

Marine Microbial Intact Polar Diacylglyceroplipids and their Application in the Study of Nutrient Stress and Bacterial Production

Kimberly Popendorf, Ph.D., 2013
Benjamin Van Mooy, Advisor

Distribution of Thiols in the Northwest Atlantic Ocean

Tristan Kading, S.M., 2013
Carl Lamborg, Advisor

Advances in Measurements of Particle Cycling and Fluxes in the Ocean

Stephanie Owens, Ph.D, 2013
Ken Buesseler, Advisor

Nitrogen Cycling in Oxygen Deficient Zones : Insights from δ15N and δ18O of Nitrite and Nitrate

Carolyn Buchwald, Ph.D., 2013
Mak Saito & Karen Casciotti, Advisors


Influences on the Oceanic Biogeochemical Cycling of the Hybrid-Type Metals: Cobalt, Iron, and Mangaese

Abigail Noble, Ph.D., 2012
Mak Saito, Advisor

Comprehensive Study of a Heavy Fuel Oil Spill: Modeling and Analytical Approaches to Understanding Environmental Weathering

Karin Lemkau, Ph.D., 2012
Christopher Reddy, Advisor

Insights Into Vitamin B12 Production, Use, and Acquisition by Marine Microbes

Erin Bertrand, Ph.D., 2012
Mak Saito, Advisor


Marine Particle Dynamics: Sinking Velocities, Size Distributions, Fluxes, and Microbial Degradation Rates

Andrew McDonnell, Ph.D., 2011
Ken Buesseler, Advisor

Lipid Biomarkers of Coral Stress: Calibration and Exploration

Jessie Kneeland, Ph.D., 2011
Konrad Hughen, Advisor

The Biogeochemistry of Marine Nitrous Oxide

Caitlin Frame, Ph.D., 2011
Karen Cascioti, Advisor

Interactions of Cadmium, Zinc, and Phosphorus in Marine Synechococcus: Field Uptake, Physiological and Proteomic Studies

Alysia Cox, Ph.D., 2011
Mak Saito, Advisor


Molecular Biogeochemistry of Modern and Ancient Marine Microbes

Jacob R. Waldbauer, Ph.D., 2010
Sallie Chisholm and Roger Summons, Advisors

Exploring the Distribution and Physiological Roles of Bacterial Membrane Lipids in the Marine Environment

James P. Sáenz, Ph.D., 2010
Roger Summons and Timothy Eglinton, Advisors

Geomicrobiology of Nitrogen in a Coastal Aquifer: Isotopic and Molecular Methods to Examine Nitrification and Denitrification in Groundwater

Daniel R. Rogers, Ph.D., 2010
Karen Casciotti, Advisor

Laboratory and Field-Based Investigations of Subsurface Geochemical Processes in Seafloor Hydrothermal Systems

Eoghan Reeves, Ph.D., 2010
Jeffrey Seewald, Advisor

Microbial Interactions Associated with Biofilms Attached to Trichodesmium spp. and Detrial Particles in the Ocean

Laura Hmelo, Ph.D., 2010
Benjamin Van Mooy, Advisor

Understanding the Ocean Carbon and Sulfur Cycles in the Context of a Variable Ocean: A Study of Anthropogenic Carbon Storage and Dimethysulfide Production in the Atlantic Ocean

Naomi M. Levine, Ph.D., 2010
Scott Doney and Dierdre Toole, Advisors


Surface-Cycling of Rhenium and Its Isotopes

Christian Miller, Ph.D., 2009
Bernhard Peucker-Ehrenbrink, Advisor

Geochemical Tracers of Processes Affecting the Formation of Seafloor Hydrothermal Fluids and Deposits in the Manus Back-Arc Basin

Paul Craddock, Ph.D., 2009
Margaret Tivey and Wolfgang Bach, Advisors

Carbon Nanotube Synthesis and Detection: Limiting the Environmental Impact of Novel Technologies

Desirée Plata, Ph.D., 2009
Philip Gschwend and Christopher Reddy, Advisors

Halogenated1'-methyl-1,2'-bipyrroles (MBPs) in the Northwestern Atlantic

Kristen Pangallo, Ph.D., 2009
Christopher Reddy, Advisor


The Marine Biogeochemistry of Zinc Isotopes

Seth G. John, Ph.D., 2007
Edward Boyle, Advisor

Geomicrobiology of the Ocean Crust: The Phylogenetic Diversity, Abundance, and Distribution of Microbial Communities Inhabiting Basalt and Implications for Rock Alteration Processes

Cara Santelli, Ph.D., 2007
Wolfgang Bach, Katrina Edwards, Advisors

Geochemistry of Slow-Growing Corals: Reconstructing Sea Surface Temperature, Salinity and the North Atlantic Oscillation

Nathalie Goodkin, Ph.D., 2007
Konrad Hughen, William Curry, Advisors

The Temporal Dynamics of Terrestrial Organic Matter Transfer to the Oceans: Initial Assessment and Application

Nicholas Drenzek, Ph.D., 2007
Konrad Hughen, Timothy Eglinton, Advisors

A Determination of Air-Sea Gas Exchange and Upper Ocean Biological Production From Five Noble Gases and Tritiugenic Helium-3

Rachel Stanley, Ph.D., 2007
William Jenkins, Advisor


The Redox and Iron-Sulfide Geochemistry of Salt Pond and the Thermodynamic Constraints on Native Magnetotactic Bacteria

Peter Canovas III, S.M., 2006
Katrina Edwards, Wolfgang Bach, Advisors

Isotopic Constraints on the Sources and Associations of Organic Compounds on Marine Sediments

Helen White, Ph.D., 2006
Timothy Eglinton, Christopher Reddy, Advisors

Relating the Biogeochemistries of Zinc, Cobalt, and Phosphorous to Phytoplankton Activities in the Sea

Rachel Wisniewski, Ph.D., 2006
James Moffett, Sonya Dyhrman, Advisors


Mechanisms of Metal Release from Contaminated Coastal Sediments

Linda Kalnejais, Ph.D., 2005
William Martin, Advisor

Chemical Characterization of Dissolved Organic Matter (DOM) in Seawater: Structure, Cycling and the Role of Biology

Tracy Quan, Ph.D., 2005
Daniel Repeta, Advisor


Determination of Sediment Provenance at Drift Sites Using Hydrogen Isotopes in Lipids

Amy Engelbrecht, S.M., 2004
Julian Sachs, Advisor

Molecular and Isotopic Records of Combustion Inputs to the Environment Over the Last 250 Years

Ana Lucia Lima, Ph.D., 2004
Timothy Eglinton and Christopher Reddy, Advisors

The Marine Geochemistry of Iron and Iron Isotopes

Bridget Bergquist, Ph.D., 2004
Edward Boyle, Advisor


Radium Isotopes as Tracers of Coastal Circulation Pathways in the Mid-Atlantic Bight

Linda Rasmussen, Ph.D., 2003
Ken Buesseler, Advisor

The Marine Biogeochemistry of Molybdenum

Caroline Tuit, Ph.D., 2003
Gregory Ravizza, Advisor

Geochemistry of Hydrothermal Vent Fluids from the Northern Juan de Fuca Ridge

Anna Cruse, Ph.D., 2003
Jeffrey Seewald, Advisor

Decoupling of Iron and Phosphate in the Global Ocean

Payal Parekh, Ph.D., 2003
John Marshall, Ed Boyle, Advisors

Black Carbon in Marine Sediments: Quantification and Implications for the Sorption of Polycyclic Aromatic Hydrocarbons

AmyMarie Accardi-Dey, Ph.D., 2003
Philip Gschwend, Advisor


Phosphate-Mineral Interactions and Potential Consequences for Nutrient Cycling

Richard Hunter Oates, S.M., 2008
William Martin, Advisor