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. Reference Link
Fawcett, S.E., M.W. Lomas, J.R. Casey, B.B. Ward, and D.M. Sigman. 2011. “Assimilation of Upwelled Nitrate by Small Eukaryotes in the Sargasso Sea”. Nature Geoscience 4: 717-22. doi:10.1038/ngeo1265. Reference Link
Fawcett, S.E., B.B. Ward, M.W. Lomas, and D.M. Sigman. 2015. “Vertical Decoupling of Nitrate Assimilation and Nitrification in the Sargasso Sea”. Deep-Sea Research Part I: Oceanographic Research Papers 103. Elsevier Ltd: 64-72. doi:10.1016/j.dsr.2015.05.004. Reference Link
Fawcett, S.E., M.W. Lomas, B.B. Ward, and D.M. Sigman. 2014. “The Counterintuitive Effect of Summer-to-Fall Mixed Layer Deepening on Eukaryotic New Production in the Sargasso Sea”. Global Biogeochemical Cycles 28. American Geophysical Union: 86-102. doi:10.1002/2013GB004579. Reference Link
Kritee, K., D.M. Sigman, J. Granger, B.B. Ward, A. Jayakumar, and C. Deutsch. 2012. “Reduced Isotope Fractionation by Denitrification under Conditions Relevant to the Ocean”. Geochimica Et Cosmochimica Acta 92: 243-59. doi:10.1016/j.gca.2012.05.020. Reference Link
Lueders-Dumont, J.A., A.G. Forden, E.R. Kast, J.A. Mohan, B.D. Walther, D.M. Sigman, and B.B. Ward. 2022. “Controls on the Nitrogen Isotopic Composition of Fish Otolith Organic Matter: Lessons from a Controlled Diet Switch Experiment”. Geochimica Et Cosmochimica Acta 316. Elsevier Ltd: 69-86. doi:10.1016/j.gca.2021.09.030. Reference Link
Zhang, X., B.B. Ward, and D.M. Sigman. 2020. “Erratum: Global Nitrogen Cycle: Critical Enzymes, Organisms, and Processes for Nitrogen Budgets and Dynamics (Chemical Reviews (2020) 120:12 (5308-5351) DOI: 10.1021 acs.Chemrev.9b00613)”. Chemical Reviews 120. American Chemical Society: 9834. doi:10.1021/acs.chemrev.0c00743. Reference Link
Zhang, X., B.B. Ward, and D.M. Sigman. 2020. “Global Nitrogen Cycle: Critical Enzymes, Organisms, and Processes for Nitrogen Budgets and Dynamics”. Chemical Reviews 120. American Chemical Society: 5308-51. doi:10.1021/acs.chemrev.9b00613. Reference Link
Lueders-Dumont, J.A., D.M. Sigman, B.J. Johnson, O.P. Jensen, S. Oleynik, and B.B. Ward. 2020. “Comparison of the Isotopic Composition of Fish Otolith-Bound Organic N With Host Tissue”. Canadian Journal of Fisheries and Aquatic Sciences 77. Canadian Science Publishing: 264-75. doi:10.1139/cjfas-2018-0360. Reference Link
Peng, X., S.E. Fawcett, N. Van Oostende, M.J. Wolf, D. Marconi, D.M. Sigman, and B.B. Ward. 2018. “Nitrogen Uptake and Nitrification in the Subarctic North Atlantic Ocean”. Limnology and Oceanography 63. Wiley Blackwell: 1462-87. doi:10.1002/lno.10784. Reference Link
Lueders-Dumont, J.A., X.T. Wang, O.P. Jensen, D.M. Sigman, and B.B. Ward. 2018. “Nitrogen Isotopic Analysis of Carbonate-Bound Organic Matter in Modern and Fossil Fish Otoliths”. Geochimica Et Cosmochimica Acta 224. Elsevier Ltd: 200-222. doi:10.1016/j.gca.2018.01.001. Reference Link
Marconi, D., D.M. Sigman, K.L. Casciotti, E.C. Campbell, Alexandra Weigand, S.E. Fawcett, A.N. Knapp, P.A. Rafter, B.B. Ward, and G.H. Haug. 2017. “Tropical Dominance of N2 Fixation in the North Atlantic Ocean”. Global Biogeochemical Cycles 31. Blackwell Publishing Ltd: 1608-23. doi:10.1002/2016GB005613. Reference Link
Van Oostende, N., S.E. Fawcett, D. Marconi, J. Lueders-Dumont, A.J.M. Sabadel, E.M.S. Woodward, B.F. Jönsson, D.M. Sigman, and B.B. Ward. 2017. “Variation of Summer phytoplankton community Composition and Its Relationship to Nitrate and Regenerated Nitrogen Assimilation across the North Atlantic Ocean”. Deep-Sea Research Part I: Oceanographic Research Papers 121. Elsevier Ltd: 79-94. doi:10.1016/j.dsr.2016.12.012. Reference Link