selected publications
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academic article
- Extracellular superoxide production by key microbes in the global ocean. Limnology and Oceanography. 64:2679-2693. 2019
- Oxygen Isotopes (? 18 O) Trace Photochemical Hydrocarbon Oxidation at the Sea Surface. Geophysical Research Letters. 46:6745-6754. 2019
- Recent Increases in Water Column Denitrification in the Seasonally Suboxic Bottom Waters of the Santa Barbara Basin. Geophysical Research Letters. 46:6786-6795. 2019
- Archaea dominate oxic subseafloor communities over multimillion-year time scales.. Sci Adv. 5:eaaw4108. 2019
- Quantifying population-specific growth in benthic bacterial communities under low oxygen using H218O.. The ISME Journal. 13:1546-1559. 2019
- Persistent organic matter in oxic subseafloor sediment. Nature Geoscience. 12:126-131. 2019
- Rapid Mapping of Dissolved Methane and Carbon Dioxide in Coastal Ecosystems Using the ChemYak Autonomous Surface Vehicle.. Environmental Science and Technology. 52:13314-13324. 2018
- Isotopic Constraints on Nitrogen Transformation Rates in the Deep Sedimentary Marine Biosphere. Global Biogeochemical Cycles. 32:1688-1702. 2018
- Improved efficiency of the biological pump as a trigger for the Late Ordovician glaciation. Nature Geoscience. 11:510-514. 2018
- Oxygen isotope analysis of bacterial and fungal manganese oxidation.. Geobiology. 16:399-411. 2018
- In situ carbon isotopic exploration of an active submarine volcano. Deep Sea Research Part II: Topical Studies in Oceanography. 150:57-66. 2018
- Biogeochemical exploration of the Pescardero Basic vents. Oceanography. 2018
- Exploration of the Northern Guaymas Basin. Oceanography. 2018
- Evidence for fungal and chemodenitrification based N2O flux from nitrogen impacted coastal sediments.. Nat Commun. 8:15595. 2017
- Evidence for microbial mediation of subseafloor nitrogen redox processes at Loihi Seamount, Hawaii. Geochimica et Cosmochimica Acta. 198:131-150. 2017
- A dual nitrite isotopic investigation of chemodenitrification by mineral-associated Fe(II) and its production of nitrous oxide. Geochimica et Cosmochimica Acta. 196:388-402. 2017
- Biogenic manganese oxides as reservoirs of organic carbon and proteins in terrestrial and marine environments.. Geobiology. 15:158-172. 2017
- Isotopic overprinting of nitrification on denitrification as a ubiquitous and unifying feature of environmental nitrogen cycling.. Proceedings of the National Academy of Sciences Proceedings of the National Academy of Sciences. 113:E6391-E6400. 2016
- Constraining the role of iron in environmental nitrogen transformations: Dual stable isotope systematics of abiotic NO2? reduction by Fe(II) and its production of N2O. Geochimica et Cosmochimica Acta. 186:1-12. 2016
- Influence of ammonia oxidation rate on thaumarchaeal lipid composition and the TEX86 temperature proxy.. Proceedings of the National Academy of Sciences Proceedings of the National Academy of Sciences. 113:7762-7767. 2016
- Nitrogen cycling in the deep sedimentary biosphere: nitrate isotopes in porewaters underlying the oligotrophic North Atlantic. Biogeosciences. 12:7483-7502. 2015
- Dominance of sulfur-fueled iron oxide reduction in low-sulfate freshwater sediments.. The ISME Journal. 9:2400-2412. 2015
- Characterizing the plasticity of nitrogen metabolism by the host and symbionts of the hydrothermal vent chemoautotrophic symbioses Ridgeia piscesae.. Molecular Ecology. 23:1544-1557. 2014
- Determination and application of the equilibrium oxygen isotope effect between water and sulfite. Geochimica et Cosmochimica Acta. 125:694-711. 2014
- Characterizing the distribution of methane sources and cycling in the deep sea via in situ stable isotope analysis.. Environmental Science and Technology. 47:1478-1486. 2013
- Microbial activity in the marine deep biosphere: progress and prospects.. Frontiers in Microbiology. 4:189. 2013
- Anaerobic methane oxidation in metalliferous hydrothermal sediments: influence on carbon flux and decoupling from sulfate reduction.. Environmental Microbiology Environmental Microbiology. 14:2726-2740. 2012
- Enriched Iron(III)-Reducing Bacterial Communities are Shaped by Carbon Substrate and Iron Oxide Mineralogy.. Frontiers in Microbiology. 3:404. 2012
- Coupled biotic–abiotic Mn(II) oxidation pathway mediates the formation and structural evolution of biogenic Mn oxides. Geochimica et Cosmochimica Acta. 75:6048-6063. 2011
- Hydrogen is an energy source for hydrothermal vent symbioses.. Nature Nature. 476:176-180. 2011
- Influence of subsurface biosphere on geochemical fluxes from diffuse hydrothermal fluids. Nature Geoscience. 4:461-468. 2011
- Spatial variability in nitrification rates and ammonia-oxidizing microbial communities in the agriculturally impacted Elkhorn Slough estuary, California.. Applied and Environmental Microbiology Applied and Environmental Microbiology. 77:269-280. 2011
- New constraints on methane fluxes and rates of anaerobic methane oxidation in a Gulf of Mexico brine pool via in situ mass spectrometry. Deep Sea Research Part II: Topical Studies in Oceanography. 57:2022-2029. 2010
- Sources of aerosol nitrate to the Gulf of Aqaba: Evidence from ?15N and ?18O of nitrate and trace metal chemistry. Marine Chemistry. 120:90-99. 2010
- Real-time in situ volatile characterization and methane carbon stable isotopic composition in the deep sea. Geochimica et Cosmochimica Acta. 73:A1418-A1418. 2009
- Using nitrate dual isotopic composition (?15N and?18O) as a tool for exploring sources and cycling of nitrate in an estuarine system: Elkhorn Slough, California. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES. 114. 2009
- Nitrogen isotopes as indicators of NO(x) source contributions to atmospheric nitrate deposition across the midwestern and northeastern United States.. Environmental Science and Technology. 41:7661-7667. 2007
- Rainfall limit of the N cycle on Earth. Global Biogeochemical Cycles. 21:n/a-n/a. 2007
- GEOC 35-Nitrification in the euphotic zone as evidenced by nitrate dual isotopic composition: Yobservations from Monterey Bay, California. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 234. 2007
- Identifying sources of nitrogen to Hanalei Bay, Kauai, utilizing the nitrogen isotope signature of macroalgae.. Environmental Science and Technology. 41:5217-5223. 2007
- Nitrate dynamics within the Pajaro River, a nutrient-rich, losing stream. Journal of the North American Benthological Society. 26:191-206. 2007
- Nitrification in the euphotic zone as evidenced by nitrate dual isotopic composition: Observations from Monterey Bay, California. Global Biogeochemical Cycles. 21:n/a-n/a. 2007
- Nitrogen and oxygen isotopic signatures of subsurface nitrate seaward of the Florida Keys reef tract. Limnology and Oceanography. 52:1258-1267. 2007
- Nitrogen sources and cycling in the San Francisco Bay Estuary: A nitrate dual isotopic composition approach. Limnology and Oceanography. 51:1654-1664. 2006
- Tracing sources of nitrate in snowmelt runoff using a high-resolution isotopic technique. Geophysical Research Letters. 31:n/a-n/a. 2004
- Levels of mercury in alligators (Alligator mississippiensis) collected along a transect through the Florida Everglades.. Science of the Total Environment. 297:239-252. 2002
- ROV Hercules Investigates Brine Lakes on the Bottom of the Ocean. Oceanography.