Publications

(2026). Seasonal thawing of high Arctic soils triggers selective microbial growth and predation. mSystems.

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(2026). Tracing the evolution of microbial alkaline phosphatases and their role in phosphorus recycling through time.

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(2026). Capacity of Arctic fjord sediments to degrade carbohydrates from permafrost active layer.

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(2025). Subsurface microbiology and the pressing societal need to support future exploration. FEMS Microbiology Ecology.

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(2025). Defining ultra-slow-growing extremophilic microorganisms as aeonophiles. Nature Microbiology.

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(2025). Potential for microbial denitrification coupled with methanol oxidation found in abundant MAGs in Antarctic Peninsula sediments. FEMS Microbiology Letters.

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(2025). Transformer-based Prediction of Microbial Growth Rates from Genomic Data. ACM conference proceedings.

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(2025). Thermophilic traits correlate with slow growth in permafrost soils. bioRxiv.

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(2025). Microbial exoenzymes catalyzed the transition to an oxygenated Earth. bioRxiv.

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(2025). Integrating authentic geoscience research into K–12 education via measurement of microbial extracellular enzymes in natural waters: A case report of two initiatives. Geological Society of America Special Paper.

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(2025). Functional genomic signatures predict microbial culturability across the tree of life. bioRxiv.

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(2024). A global comparison of surface and subsurface microbiomes reveals large-scale biodiversity gradients, and a marine-terrestrial divide. Science Advances.

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(2024). Depth-specific distribution of bacterial MAGs in permafrost active layer in Ny Ålesund, Svalbard (79°N). Systematic and Applied Microbiology.

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(2024). A simple BLASTn-based approach generates novel insights into the regulation and biological function of type I toxin-antitoxins. mSystems.

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(2024). Control of hydrogen concentrations by microbial sulfate reduction in two contrasting anoxic coastal sediments. Frontiers in Microbiology.

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(2024). Depth‐Partitioning of Particulate Organic Carbon Composition in the Rising and Falling Stages of the Amazon River. Geochemistry, Geophysics, Geosystems.

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(2023). Biogeochemistry of Earth before exoenzymes. Nature Geoscience.

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(2023). Complex organic matter degradation by secondary consumers in chemolithoautotrophy-based subsurface geothermal ecosystems. PLOS ONE.

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(2023). Adapting Protein Language Models for Explainable Fine-Grained Evolutionary Pattern Discovery.

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(2022). A comparison of dimensionality reduction methods for large biological data. ACM conference proceedings.

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(2021). Potential Activities and Long Lifetimes of Organic Carbon-Degrading Extracellular Enzymes in Deep Subsurface Sediments of the Baltic Sea. Frontiers in Microbiology.

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(2021). Sustained Ability of a Natural Microbial Community to Remove Nitrate from Groundwater. Groundwater.

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(2021). Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin. Nature Geoscience.

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(2021). On the Past, Present, and Future Role of Biology in NASA’s Exploration of our Solar System. Bulletin of the American Astronomical Society.

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(2021). Functional Redundancy in Ocean Microbiomes Controls Trait Stability. bioRxiv.

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(2020). Analytical and Computational Advances, Opportunities, and Challenges in Marine Organic Biogeochemistry in an Era of “Omics”. Frontiers in Marine Science.

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(2020). Roadmap for naming uncultivated Archaea and Bacteria. Nature Microbiology.

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(2020). The fate of organic carbon in marine sediments - New insights from recent data and analysis. Deep-Sea Research I.

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(2020). Patterns in extracellular enzyme activity and microbial diversity in deep-sea Mediterranean sediments. Deep-Sea Research I.

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(2020). A quantitative measure of functional redundancy in microbial ecosystems. bioRxiv.

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(2019). Carbon in the deep biosphere: forms, fates, and biogeochemical cycling. Frontiers in Microbiology.

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(2019). Unaligned Sequence Similarity Search Using Deep Learning. arXiv.

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(2019). Kinetics and identities of extracellular peptidases in subsurface sediments of the White Oak River Estuary, NC. ISME Journal.

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(2019). Polysaccharide hydrolysis in the presence of oil and dispersants: Insights into potential degradation pathways of exopolymeric substances (EPS) from oil-degrading bacteria. Elementa: Science of the Anthropocene.

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(2019). Theoretical and Simulation-Based Investigation of the Relationship between Sequencing Effort, Microbial Community Richness, and Diversity in Binning Metagenome-Assembled Genomes. mSphere.

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(2019). Kinetics and Identities of Extracellular Peptidases in Subsurface Sediments of the White Oak River Estuary, North Carolina. Applied and Environmental Microbiology.

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(2019). High proportions of bacteria and archaea across most biomes remain uncultured. ISME Journal.

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(2019). Uncultured microbial phyla suggest mechanisms for multi-thousand-year subsistence in Baltic Sea sediments. Frontiers in Microbiology.

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(2019). Characterization of the Interactive Effects of Labile and Recalcitrant Organic Matter on Microbial Growth and Metabolism. Frontiers in Microbiology.

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(2019). Editorial: Extracellular Enzymes in Aquatic Environments: Exploring the Link Between Genomic Potential and Biogeochemical Consequences.

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(2018). Phylogenetically Novel Uncultured Microbial Cells Dominate Earth Microbiomes.

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(2018). Understanding Electrochemically Activated Persulfate and Its Application to Ciprofloxacin Abatement. Frontiers in Microbiology.

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(2018). Potential Activities of Freshwater Exo- and Endo-Acting Extracellular Peptidases in East Tennessee and the Pocono Mountains. Frontiers in Microbiology.

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(2017). Sequential bioavailability of sedimentary organic matter to heterotrophic bacteria. Environmental Microbiology.

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(2016). Evidence for the Priming Effect in a Planktonic Estuarine Microbial Community. Frontiers in Marine Science.

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(2015). Substrate specificity of aquatic extracellular peptidases assessed by competitive inhibition assays using synthetic substrates. Aquatic Microbial Ecology.

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(2015). New aminopeptidase from “microbial dark matter” archaeon. FASEB Journal.

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(2014). Picky, hungry eaters in the cold: persistent substrate selectivity among polar pelagic microbial communities. Frontiers in Microbiology.

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(2014). Extracellular enzymes in terrestrial, freshwater, and marine environments: Perspectives on system variability and common research needs. Biogeochemistry 117:5-21.

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(2014). Verrucomicrobia Are Candidates for Polysaccharide-Degrading Bacterioplankton in an Arctic Fjord of Svalbard.

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(2013). Patterns of extracellular enzyme activities and microbial metabolism in an Arctic fjord of Svalbard and in the northern Gulf of Mexico: contrasts in carbon processing by pelagic microbial communities. Frontiers in Microbiology.

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(2013). Meta-Analysis of Quantification Methods Shows that Archaea and Bacteria Have Similar Abundances in the Subseafloor. Applied and Environmental Microbiology.

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(2013). Abiotic Racemization Kinetics of Amino Acids in Marine Sediments. PLOS ONE.

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(2013). Predominant archaea in marine sediments degrade detrital proteins. Nature.

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(2012). Functional variation among polysaccharide-hydrolyzing microbial communities in the Gulf of Mexico. Marine Chemistry.

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(2010). Long lifetimes of β-glucosidase, leucine aminopeptidase, and phosphatase in Arctic seawater. Marine Chemistry.

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(2010). Extracellular peptidase and carbohydrate hydrolase activities in an Arctic fjord (Smeerenburgfjord, Svalbard). Aquatic Microbial Ecology.

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(2010). Comparison of multivariate microbial datasets with the Shannon index: An example using enzyme activity from diverse marine environments. Organic Geochemistry.

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(2010). Changes in the spectrum and rates of extracellular enzyme activities in seawater following aggregate formation.

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(2010). Temperature induced decoupling of enzymatic hydrolysis and carbon remineralization in long-term incubations of Arctic and temperate sediments. Geochimica et Cosmochimica Acta.

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(2008). Fluorescence anisotropy as a means to determine extracellular polysaccharide hydrolase activity in environmental samples. Analytical Biochemistry.

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(2006). Electron paramagnetic resonance spectroscopy as a novel approach to measure macromolecule–surface interactions and activities of extracellular enzymes. Marine Chemistry.

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(2003). Dynamics of dissolved carbohydrates in the Chesapeake Bay: Insights from enzyme activities, concentrations, and microbial metabolism. Limnology and Oceanography.

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