D.M. Sigman

First name

D.M.

Last name

Sigman

Luu, V.H., Y. Ryu, W. Darling, S. Oleynik, S. de Putron, A.L. Cohen, X.T. Wang, and D.M. Sigman. 2025. “Nitrogen Isotope Ratios across the Bermuda Coral Reef: Implications for Coral Nitrogen Sources and the Coral-Bound Nitrogen Isotope Proxy”. Frontiers in Marine Science Volume 12 - 2025. doi:10.3389/fmars.2025.1554418.

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Han, E., S.H. Kopf, A. Maloney, X. Ai, D.M. Sigman, and X. Zhang. 2025. “Nitrogen Stable Isotope Fractionation by Biological Nitrogen Fixation Reveals Cellular Nitrogenase Is Diffusion Limited”. PNAS Nexus 4: pgaf061. doi:10.1093/pnasnexus/pgaf061.

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Hain, M.P., and D.M. Sigman. 2024. CO2 in Earth’s Ice Age Cycles. Oxford Research Encyclopedia of Climate Science. Referenced from oxfordre.com: CO2 in Earth’s Ice Age Cycles.

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Lüdecke, T., J.N. Leichliter, D. Stratford, D.M. Sigman, H.B. Vonhof, G.H. Haug, M. Bamford, and A. Martínez-García. 2025. “Australopithecus at Sterkfontein Did Not Consume Substantial Mammalian Meat”. Science 387: 309-14. doi:10.1126/science.adq7315.

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Duprey, N.N., A.D. Foreman, J.D. Carriquiry, C.D. Charles, S.C. Sanchez, H.B. Vonhof, F. Rubach, et al. 2024. “Decadal Oscillations in the Ocean S Largest Oxygen-Deficient Zone”. Science (New York, N.Y.). doi:10.1126/science.adk4965.

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Asamoto, C., Y. Ryu, K. Eckartt, J. Kelley-Kern, Lars E.P. Dietrich, D.M. Sigman, and S.H. Kopf. 2024. “Stable Isotopic Signature of Dissimilatory Nitrate Reduction Is Robust Against Enzyme Mutation”. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. doi:10.1073/pnas.2416002121.

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Jung, J., S. Zoppe, T. Söte, S. Moretti, Nicolas N. Duprey, A.D. Foreman, T. Wald, et al. 2024. “Coral Photosymbiosis on Mid-Devonian Reefs”. Nature. Nature Research. doi:10.1038/s41586-024-08101-9.

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Granger, R., S.M. Smart, A.D. Foreman, A. Auderset, E.C. Campbell, T.A. Marshall, G.H. Haug, D.M. Sigman, A. Martínez-García, and S.E. Fawcett. 2024. “Tracking Agulhas Leakage in the South Atlantic Using Modern Planktic Foraminifera Nitrogen Isotopes”. Geochemistry, Geophysics, Geosystems 25. John Wiley and Sons Inc. doi:10.1029/2023GC011190.

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Rao, Z.C., J.A. Lueders-Dumont, G.L. Stringer, Y. Ryu, K. Zhao, S.C.B. Myneni, S. Oleynik, G.H. Haug, A. Martínez-García, and D.M. Sigman. 2024. “A Nitrogen Isotopic Shift in Fish Otolith-Bound Organic Matter During the Late Cretaceous”. Proceedings of the National Academy of Sciences of the United States of America 121. National Academy of Sciences. doi:10.1073/pnas.2322863121.

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Auderset, A., F. Fripiat, R.C. Creel, L. Oesch, A.S. Studer, J. Repschläger, E. Hathorne, et al. 2024. “Sea Level Modulation of Atlantic Nitrogen Fixation Over Glacial Cycles”. Paleoceanography and Paleoclimatology 39. John Wiley and Sons Inc. doi:10.1029/2024PA004878.

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Duan, J., R. Cloete, J.C. Loock, A. Lanzirotti, M. Newville, A. Martínez-García, D.M. Sigman, P.J. Lam, A.N. Roychoudhury, and S.C.B. Myneni. 2024. “Biogenic-to-Lithogenic Handoff of Particulate Zn Affects the Zn Cycle in the Southern Ocean”. Science (New York, N.Y.) 384: 1235-40. doi:10.1126/science.adh8199.

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Moretti, S., A. Auderset, C. Deutsch, R. Schmitz, L. Gerber, E. Thomas, V. Luciani, et al. 2024. “Oxygen Rise in the Tropical Upper Ocean During the Paleocene-Eocene Thermal Maximum”. Science 383. American Association for the Advancement of Science: 727-31. doi:10.1126/science.adh4893.

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Choisnard, N., N.N. Duprey, T. Wald, M. Thibault, F. Houlbrèque, A.D. Foreman, P. Cuet, et al. 2024. “Tracing the Fate of Seabird-Derived Nitrogen in a Coral Reef Using Nitrate and Coral Skeleton Nitrogen Isotopes”. Limnology and Oceanography. John Wiley and Sons Inc. doi:10.1002/lno.12485.

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Marshall, T.A., L.M. Beal, D.M. Sigman, and S.E. Fawcett. 2023. “Instabilities Across the Agulhas Current Enhance Upward Nitrate Supply in the Southwest Subtropical Indian Ocean”. AGU Advances 4. John Wiley and Sons Inc. doi:10.1029/2023AV000973.

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Straub, M., A. Auderset, L. de Leval, N. Piazzon, D. Maison, M.-C. Vozenin, J. Ollivier, B. Petit, D.M. Sigman, and A. Martínez-García. 2023. “Nitrogen Isotopic Composition As a Gauge of Tumor Cell Anabolism-to-Catabolism Ratio”. Scientific Reports 13. Nature Research. doi:10.1038/s41598-023-45597-z.

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Ai, X.E., L.M. Thöle, A. Auderset, M. Schmitt, S. Moretti, A.S. Studer, E. Michel, et al. 2024. “The Southward Migration of the Antarctic Circumpolar Current Enhanced Oceanic Degassing of Carbon Dioxide During the Last Two Deglaciations”. Communications Earth and Environment 5. Nature Publishing Group. doi:10.1038/s43247-024-01216-x.

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Moretti, S., N.N. Duprey, A.D. Foreman, A. Arns, S. Brömme, J. Jung, X.E. Ai, et al. 2024. “Analytical Improvements and Assessment of Long-Term Performance of the oxidation–denitrifier Method”. Rapid Communications in Mass Spectrometry 38. John Wiley and Sons Ltd. doi:10.1002/rcm.9650.

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Comans, C.M., S.M. Smart, E.R. Kast, Y. Lu, T. Lüdecke, J.N. Leichliter, D.M. Sigman, T. Ikejiri, and A. Martínez-García. 2024. “Enameloid-Bound δ15N Reveals Large Trophic Separation Among Late Cretaceous Sharks in the Northern Gulf of Mexico”. Geobiology 22. John Wiley and Sons Inc. doi:10.1111/gbi.12585.

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Sigman, D.M., and M.P. Hain. 2024. “Ocean Oxygen, Preformed Nutrients, and the Cause of the Lower Carbon Dioxide Concentration in the Atmosphere of the Last Glacial Maximum”. Paleoceanography and Paleoclimatology 39. John Wiley and Sons Inc. doi:10.1029/2023PA004775.

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Hess, A. V., A. Auderset, Y. Rosenthal, K. G. Miller, X. Zhou, D.M. Sigman, and A. Martínez-García. (2023) 2023. “A Well-Oxygenated Eastern Tropical Pacific During the Warm Miocene”. Nature. doi:10.1038/s41586-023-06104-6.

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Leichliter, J.N., T. Lüdecke, A.D. Foreman, N. Bourgon, N.N. Duprey, H.B. Vonhof, V. Souksavatdy, et al. 2023. “Tooth Enamel Nitrogen Isotope Composition Records Trophic Position: A Tool for Reconstructing Food Webs”. Communications Biology 6. doi:10.1038/s42003-023-04744-y.

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Marshall, T.A., D.M. Sigman, L.M. Beal, A.D. Foreman, A. Martínez-García, S. Blain, E.C. Campbell, et al. (2023) 2023. “The Agulhas Current Transports Signals of Local and Remote Indian Ocean Nitrogen Cycling”. Journal of Geophysical Research: Oceans 37 (2). doi:10.1029/2022JC019413.

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Fripiat, F., D.M. Sigman, A. Martínez-García, D. Marconi, X.E. Ai, A. Auderset, S.E. Fawcett, S. Moretti, A.S. Studer, and G.H. Haug. (2023) 2023. “The Impact of Incomplete Nutrient Consumption in the Southern Ocean on Global Mean Ocean Nitrate δ15N”. Global Biogeochemical Cycles. doi:10.1029/2022GB007442.

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Lüdecke, T., J.N. Leichliter, V. Aldeias, M. Bamford, D. Biro, D. Braun, C. Capelli, et al. 2022. “Carbon, Nitrogen, and Oxygen Stable Isotopes in Modern Tooth Enamel: A Case Study from Gorongosa National Park, Central Mozambique”. Frontiers in Ecology and Evolution 10. doi:10.3389/fevo.2022.958032.

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Farmer, J.R., T. Pico, O.M. Underwood, R. Stout, J. Granger, T.M. Cronin, François Fripiat, A. Martínez-García, G.H. Haug, and D.M. Sigman. (2022) 2023. “The Bering Strait Was Flooded 10,000 Years before the Last Glacial Maximum”. PNAS 120 (1). doi:10.1073/pnas.2206742119.

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Zhang, E., D.M. Sigman, and Gerard Wysocki. 2021. “In-Line Optical Subtraction Using a Differential Faraday Rotation Spectrometer for 15NO 14NO Isotopic Analysis”. doi:10.48550/ARXIV.2103.12196.

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Wang, X.T., Y. Wang, A. Auderset, D.M. Sigman, H.A. Ren, A. Martínez-García, G.H. Haug, et al. 2022. “Oceanic Nutrient Rise and the Late Miocene Inception of Pacific Oxygen-Deficient Zones”. Proceedings of the National Academy of Sciences of the United States of America 119. doi:10.1073/pnas.2204986119.

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Marshall, T.A., J. Granger, K.L. Casciotti, K. Dähnke, K.-C. Emeis, D. Marconi, M.R. McIlvin, et al. 2022. “The Angola Gyre Is a Hotspot of Dinitrogen Fixation in the South Atlantic Ocean”. Communications Earth and Environment 3. doi:10.1038/s43247-022-00474-x.

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Auderset, A., S. Moretti, B. Taphorn, P.-R. Ebner, E.R. Kast, X.T. Wang, R. Schiebel, D.M. Sigman, G.H. Haug, and A. Martínez-García. 2022. “Enhanced Ocean Oxygenation During Cenozoic Warm Periods”. Nature 609: 77-82. doi:10.1038/s41586-022-05017-0.

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Martínez-García, A., J. Jung, X.E. Ai, D.M. Sigman, A. Auderset, N.N. Duprey, A.D. Foreman, et al. 2022. “Laboratory Assessment of the Impact of Chemical Oxidation, Mineral Dissolution, and Heating on the Nitrogen Isotopic Composition of Fossil-Bound Organic Matter”. Geochemistry, Geophysics, Geosystems 23. doi:10.1029/2022GC010396.

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Kast, E.R., M.L. Griffiths, S.L. Kim, Z.C. Rao, K. Shimada, M.A. Becker, H.M. Maisch, et al. (2022) 2022. “Cenozoic Megatooth Sharks Occupied Extremely High Trophic Positions”. Science Advances 8 (25). doi:10.1126/sciadv.abl6529.

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François, R., M.A. Altabet, E.-F. Yu, D.M. Sigman, M.P. Bacon, M. Frank, G. Bohrmann, G. Bareille, and L.D. Labeyrie. 1997. “Contribution of Southern Ocean Surface-Water Stratification to Low Atmospheric CO2 Concentrations During the Last Glacial Period”. Nature 389. Nature Publishing Group: 929-35. doi:10.1038/40073.

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Houlton, B.Z., D.M. Sigman, and L.O. Hedin. 2006. “Isotopic Evidence for Large Gaseous Nitrogen Losses from Tropical Rainforests”. Proceedings of the National Academy of Sciences of the United States of America 103: 8745-50. doi:10.1073/pnas.0510185103.

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Needoba, J.A., D.M. Sigman, and P.J. Harrison. 2004. “The Mechanism of Isotope Fractionation During Algal Nitrate Assimilation As Illuminated by the 15N 14N of Intracellular Nitrate”. Journal of Phycology 40. Blackwell Publishing Inc.: 517-22. doi:10.1111/j.1529-8817.2004.03172.x.

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Sigman, D.M., K.L. Casciotti, M. Andreani, C. Barford, M. Galanter, and J.K. Böhlke. 2001. “A Bacterial Method for the Nitrogen Isotopic Analysis of Nitrate in Seawater and Freshwater”. Analytical Chemistry 73: 4145-53. doi:10.1021/ac010088e.

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Sigman, D.M., J. Granger, P.J. Difiore, M.F. Lehmann, R. Ho, G. Cane, and A. van Geen. 2006. “Erratum: ‘Coupled Nitrogen and Oxygen Isotope Measurements of Nitrate Along the Eastern North Pacific Margin’ (Global Biogeochemical Cycles (2005) Vol. 19 10.1029 2005GB002458)”. Global Biogeochemical Cycles 20. doi:10.1029/2005GB002682.

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Hastings, M.G., D.M. Sigman, and F. Lipschultz. 2003. “Isotopic Evidence for Source Changes of Nitrate in Rain at Bermuda”. Journal of Geophysical Research: Atmospheres 108. Blackwell Publishing Ltd: 22-1. doi:10.1029/2003jd003789.

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Haug, G.H., K.A. Hughen, D.M. Sigman, L.C. Peterson, and U. Röhl. 2001. “Southward Migration of the Intertropical Convergence Zone through the Holocene”. Science 293: 1304-8. doi:10.1126/science.1059725.

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Hastings, M.G., D.M. Sigman, and E.J. Steig. 2005. “Glacial/Interglacial/Changes/in/the/Isotopes/of/Nitrate/from/the/Greenland/Ice/Sheet/Project/2/(GISP2)/Ice/Core”. Global Biogeochemical Cycles 19. doi:10.1029/2005GB002502.

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Sigman, D.M., and G.H. Haug. 2003. The Biological Pump in the Past. Treatise on Geochemistry. Vol. 6-9. Elsevier Inc. doi:10.1016/B0-08-043751-6/06118-1.

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Sigman, D.M., and E.A. Boyle. 2001. “Palaeoceanography: Antarctic Stratification and Glacial CO2”. Nature 412: 606. doi:10.1038/35088132.

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Lehmann, M.F., D.M. Sigman, D.C. McCorkle, B.G. Brunelle, S. Hoffmann, M. Kienast, G. Cane, and J. Clement. 2005. “Origin of the Deep Bering Sea Nitrate Deficit: Constraints from the Nitrogen and Oxygen Isotopic Composition of Water Column Nitrate and Benthic Nitrate Fluxes”. Global Biogeochemical Cycles 19. doi:10.1029/2005GB002508.

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Saito, M.A., D.M. Sigman, and F.M.M. Morel. 2003. “The Bioinorganic Chemistry of the Ancient Ocean: The Co-Evolution of Cyanobacterial Metal Requirements and Biogeochemical Cycles at the Archean-Proterozoic Boundary?”. Inorganica Chimica Acta 356. Elsevier S.A.: 308-18. doi:10.1016/S0020-1693(03)00442-0.

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Sigman, D.M., and E.A. Boyle. 2000. “Glacial/Interglacial/Variations/in/Atmospheric/Carbon/Dioxide”. Nature 407: 859-69. doi:10.1038/35038000.

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Robinson, R.S., D.M. Sigman, P.J. Difiore, M.M. Rohde, T.A. Mashiotta, and D.W. Lea. 2005. “Diatom-Bound 15N 14N: New Support for Enhanced Nutrient Consumption in the Ice Age Subantarctic”. Paleoceanography 20: 1-14. doi:10.1029/2004PA001114.

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Casciotti, K.L., D.M. Sigman, and B.B. Ward. 2003. “Linking Diversity and Stable Isotope Fractionation in Ammonia-Oxidizing Bacteria”. Geomicrobiology Journal 20: 335-53. doi:10.1080/01490450303895.

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Sigman, D.M., M.A. Altabet, D.C. McCorkle, R. François, and G. Fischer. 2000. “The δ15N of Nitrate in the Southern Ocean: Nitrogen Cycling and Circulation in the Ocean Interior”. Journal of Geophysical Research: Oceans 105. Blackwell Publishing Ltd: 19599-614. doi:10.1029/2000jc000265.

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Jaccard, S.L., G.H. Haug, D.M. Sigman, T.F. Pedersen, H.R. Thierstein, and U. Röhl. 2005. “Glacial/Interglacial/Changes/in/Subarctic/North/Pacific/Stratification”. Science 308: 1003-6. doi:10.1126/science.1108696.

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Sigman, D.M., R.S. Robinson, A.N. Knapp, A. van Geen, D.C. McCorkle, J.A. Brandes, and R.C. Thunell. 2003. “Distinguishing Between Water Column and Sedimentary Denitrification in the Santa Barbara Basin Using the Stable Isotopes of Nitrate”. Geochemistry, Geophysics, Geosystems 4. doi:10.1029/2002GC000384.

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Haug, G.H., D.M. Sigman, R. Tiedemann, T.F. Pedersen, and M. Sarnthein. 1999. “Onset of Permanent Stratification in the Subarctic Pacific Ocean”. Nature 401: 779-82. doi:10.1038/44550.

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