Publications

Sutherland*, KM, SD Wankel and CM Hansel. 2020. The ocean oxygen budget revisited: New consideration of dark extracellular superoxide production. Proceedings of the National Academy of Sciences 117:3433-3439. doi:10.1073/pnas.1912313117.

Grabb, KC, J Kapit, SD Wankel, K Manganini, A Apprill, and CM Hansel. 2019. A diver operated submersible chemiluminescent sensor (DISCO) for coral reef studies of reactive oxygen species associated with coral health. Environmental Science and Technology. doi:10.1021/acs.est.9b04022.

Vuillemin A, SD Wankel, ÖK Coskun, T Magritsch, S Vargas, ER Estes, AJ Spivack, DC Smith, R Pockalny, RW Murray, S D’Hondt and WD Orsi. 2019. Archaea dominate oxic subseafloor communities over multiple million year timescales. Science Adv. 5:6. doi:10.1126/sciadv.eaaw4108.

Ward, CP, CM Sharpless, DL Valentine, C Aeppli, KM Sutherland, SD Wankel and CM Reddy. 2019. Stable oxygen isotope (δ18O) composition sensitively traces photochemical hydrocarbon oxidation at the sea surface. Geophysical Research Letters. 46:12, p6745-6754.

Estes ER, RA Pockalny, S D’Hondt, F Inagaki, Y Morono, RW Murray, D Nordlund, AJ Spivack, SD Wankel, N Xiao, and CM Hansel. 2019. Spectroscopic windows in to the persistence of organic carbon in oxygenated marine sediment. Nature Geoscience. 12:126-137.

Nicholson D, APM Michel, SD Wankel, K Manganini, R Sugrue, Z Sandwith and S Monk. 2018. Rapid mapping of methane and carbon dioxide in coastal ecosystems using the ChemYak, an autonomous surface vehicle. Environmental Science and Technology.doi:10.1021/acs.est8b04190.

Sutherland KM, CM Hansel and SD Wankel. 2018. Oxygen isotope analysis of bacterial and fungal manganese oxides. Geobiology. doi: 10.1111/gbi.12288

Wankel SD, W Ziebis, C Buchwald, C Charoenpong, D de Beer, J Dentinger, Z Xu, K Zengler. 2017. Evidence for non-traditional N2O formation pathways in nitrogen-impacted coastal ecosystems: fungal and chemodenitrification. Nature Communications. doi: 10.1038/NCOMMS15595.

Sylvan JB, SD Wankel, DE LaRowe, C Charoenpong, JA Huber, CL Moyer and KJ Edwards. 2017. Evidence for microbial mediation of subseafloor nitrogen redox processes at Loihi Seamount, Hawaii. Geochimica et Cosmochimica Acta . DOI:/10.1016/j.gca.2016.10.029.

Hurley SJ, FJ Elling, M Könneke, C Buchwald, SD Wankel, AE Santoro, JS Lipp, K-U Hinrichs and A Pearson. 2016. Nitrification rate is a fundamental control on archaeal lipid composition and the TEX86 proxy. Proceedings of the National Academy of Sciences of the United States of America. 113:7762-7767.

Buchwald, C, KC Grabb, CM Hansel and SD Wankel. 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. doi:10.1016/j.gca.2016.04.041

Hansel CM, CJ Lentini, Y Tang, DT Johnston, SD Wankel and PM Jardine. 2015. Dominance of sulfur-fueled iron oxide reduction in low sulfate freshwater environments. The ISME Journal. doi:10.1038/ismej.2015.50

Liao, L, SD Wankel, M Wu, CM Cavanaugh and PR Girguis. 2014. Characterizing the plasticity of nitrogen metabolism by the host and symbionts of the hydrothermal vent chemoautotrophic symbioses Ridgeia piscesae. Molecular Ecology. 23:1544-1557. doi:10.1111/mec.12460.

Wankel SD, Huang YW, Gupta M, Provencal R, Leen JB, Fahrland A, Vidoudez C, Girguis PR. 2013. Characterizing the distribution of methane sources and cycling in the deep sea via in situ stable isotope analysis. Environmental Science and Technology 47(3):1478-86. doi: 10.1021/es303661w

Wankel, S. D., Adams, M. M., Johnston, D. T., Hansel, C. M., Joye, S. B. and Girguis, P. R. 2012. Anaerobic methane oxidation in metalliferous hydrothermal sediments: influence on carbon flux and decoupling from sulfate reduction. Environmental Microbiology, 14: 2726–2740. doi: 10.1111/j.1462-2920.2012.02825.x

Learman DR, SD Wankel, SM Webb, N Martinez, AS Madden, and CM Hansel. 2011. Coupled Biotic-Abiotic Mn(II) Oxidation Pathway Mediates the Formation and Structural Evolution of Biogenic Mn Oxides. Geochimica et Cosmochimica Acta. 75:6048-6063.

Wankel SD, Mosier AC, Hansel CM, Paytan A, Francis CA. 2011. Spatial variability in nitrification rates and ammonia-oxidizing microbial communities in the agriculturally impacted Elkhorn Slough estuary, California. Applied and Environmental Microbiology 77(1):269-80. doi: 10.1128/AEM.01318-10.

S.D. Wankel, Y. Chen, C. Kendall, A.F. Post, A. Paytan. 2010. Sources of aerosol nitrate to the Gulf of Aqaba: evidence from δ15N and δ18O of nitrate and trace metal chemistry. Marine Chemistry, 120:90–99.

Elliott, EM, C Kendall, SD Wankel, EW Boyer, DA Burns, DJ Bain, K Harlin, TJ Butler, and R Carlton. 2007. An Isotopic Tracer of Stationary Source NOx Emissions Across the Midwestern and Northeastern United States. Environmental Science and Technology. 41(22): 7661-7667.

Kendall C, EM Elliott and SD Wankel. 2007. Tracing anthropogenic sources of nitrogen to ecosystems. In Stable Isotopes in Ecology and Environmental Science. K Lajtha and RH Michener (eds.). Blackwell Science Publications, Oxford.

Wankel, S. D., C. Kendall, J. T. Pennington, F. P. Chavez, and A. Paytan (2007), Nitrification in the euphotic zone as evidenced by nitrate dual isotopic composition: Observations from Monterey Bay, California, Global Biogeochemical Cycles, 21, GB2009, doi:10.1029/2006GB002723.

Leichter, JL, A Paytan, SD Wankel, K Hanson, S Miller, and M Altabet. 2007. Nitrogen and oxygen isotopic signatures of subsurface nitrate: Evidence of deep water nutrient sources to the Florida Keys reef tract. Limnology and Oceanography. 52:1258-1267.

Chang, C, SR Silva, C Kendal, GM Michalski, KL Casciotti and SD Wankel. 2005. Preparation and analysis of nitrogen-bearing compounds in water for stable isotope ratio measurement. In Handbook of Stable Isotope Analytical Techniques. PA de Groot (ed). Ch 15. Elsevier.

Paytan, A, F Martinez-Ruiz, M Eagle, A Ivy, SD Wankel. 2004. Using sulfur isotopes to elucidate the origin of barite associated with high organic matter accumulation events in marine sediments in Amend JP, Edwards KJ and Lyons TW eds. Sulfur Biogeochemistry - Past and Present. Boulder CO, Geological Society of America Special Paper 379, p 151-160.