Publications
Names in bold are or were part of the Stanford Marine Biogeochemistry Lab.
2023
Gluschankoff, N., Santoro, A. E., Buchwald, C., Casciotti, K. L. (2023). Shifts in the Isotopic Composition of Nitrous Oxide Between El Niño and La Niña in the Eastern Tropical South Pacific. Global Biochemical Cycles, 37(10). https://doi.org/10.1029/2023GB007959
Kelly, C. L., Manning, C. C., Frey, C., Kaiser, J., Gluschankoff, N., Casciotti, K. L. (2023). Pyisotopomer: A Python package for obtaining intramolecular isotope ratio differences from mass spectrometric analysis of nitrous oxide isotopocules. Rapid Communications in Mass Spectrometry, 37:e9513. https://doi.org/10.1002/rcm.9513
Frey, C., Sun, X., Szemberski, L., Casciotti, K. L., Garcia‐Robledo, E., Jayakumar, A., Kelly, C. L., Lehmann, M. F., Ward, B. B. (2023). Kinetics of nitrous oxide production from ammonia oxidation in the Eastern Tropical North Pacific. Limnology and Oceanography, 68, 424-438. https://doi.org/10.1002/lno.12283
Travis, N. M., Kelly, C. L., Mullholland, M. R., Casciotti, K. L. (2023). Nitrite Cycling in the Primary Nitrite Maxima of the Eastern Tropical North Pacific. Biogeosciences, 20(2), 325-347. https://doi.org/10.5194/bg-2022-137
Proctor, C., Coupel, P., Casciotti, K. L., Tremblay, J-E., Zakem, E., Arrigo, K. R., Mills, M. M. (2023). Light, ammonium, pH, and phytoplankton competition as environmental factors controlling nitrification. Limnology and Oceanography, 9999, 1-14. https://doi.org/10.1002/lno.12359
2022
Marshall, T., Granger, J., Casciotti, K. L., Dähnke, K., Emeis, K., Marconi, D., McIlvin, M. R., Noble, A. E., Saito, M. A., Sigman, D. M., Fawcett, S. E. (2022). The Angola Gyre is a hotspot of dinitrogen fixation in the South Atlantic Ocean. Communications Earth & Environment, 3(1), 1-10. doi.org/10.1038/s43247-022-00474-x
Monreal, P. J., Kelly, C. L., Travis, N. M., Casciotti, K. L. (2022). Identifying the Sources and Drivers of Nitrous Oxide Accumulation in the Eddy‐Influenced Eastern Tropical North Pacific Oxygen‐Deficient Zone. Global Biogeochemical Cycles, 36(6), e2022GB007310. doi.org/10.1029/2022GB007310
Cinay, T., Dumit, D., Woosley, R. J., Boles, E. L., Kwiecinski, J. V., Mullen, S., Tamasi, T. J., Wolf, M. J., Kelly, C. L., Travis, N. M., Casciotti, K. L., Babbin, A. R. (2022) Coincident Biogenic Nitrite and pH Maxima Arise in the Upper Anoxic Layer in the Eastern Tropical North Pacific. Global Biogeochemical Cycles, 36(12), e2022GB007470 https://doi.org/10.1029/2022GB007470
Schutte, C. A., Samarkin, V. A., Bowles, M. W., Peters, B., Casciotti, K. L., Madigan, M. T., Joye, S. B. (2022). Abiotic Nitrous Oxide Production From Sediments and Brine of Don Juan Pond, Wright Valley Antarctica, at Mars Analog Temperatures (− 40° C). Geophysical Research Letters, 49(3), e2021GL094635. doi.org/10.1029/2021GL094635
Wan, X. S., Sheng, H., Dai, M., Casciotti, K. L., Church, M. J., Zou, W., Liu, L., Shen, H., Zhou, K., Ward, B. B., Kao, S. (2022). Epipelagic nitrous oxide production offsets carbon sequestration by the biological pump. Nature Geoscience, 16, 29–36. doi.org/10.1038/s41561-022-01090-2
2021
Bourbonnais, A., Frey, C., Sun, X., Bristow, L. A., Jayakumar, A., Ostrom, N. E., Casciotti, K. L., Ward, B. B. (2021). Protocols for Assessing Transformation Rates of Nitrous Oxide in the Water Column. Frontiers in Marine Science, 8, 293. doi:10.3389/fmars.2021.611937
Kelly, C. L., Travis, N. M., Baya P. A., and Casciotti, K. L. (2021). Quantifying Nitrous Oxide Cycling Regimes in the Eastern Tropical North Pacific Ocean With Isotopomer Analysis. Global Biogeochemical Cycles, 35(2), e2020GB006637. doi:10.1029/2020GB006637
Santoro, A. E., Buchwald, C., Knapp, A. N., Berelson, W. M., Capone, D. G., Casciotti, K. L. (2021). Nitrification and Nitrous Oxide Production in the Offshore Waters of the Eastern Tropical South Pacific. Global Biogeochemical Cycles, 35(2), e2020GB006716. doi:10.1029/2020GB006716
Sun, X., Jayakumar, A., Tracey, J. C., Wallace, E., Kelly, C. L., Casciotti, K. L., Ward, B. B. (2021). Microbial N2O consumption in and above marine N2O production hotspots. The ISME Journal, 15, 1434–1444. doi:10.1038/s41396-020-00861-2
2020
Schutte, C. A., Samarkin, V. A., Peters, B., Madigan, M. T., Bowles, M., Morgan-Kiss, R., Casciotti, K. L., Joye, S. (2020). Vertical stratification and stability of biogeochemical processes in the deep saline waters of Lake Vanda, Antarctica. Limnology and Oceanography, 65(3), 569-581. doi:10.1002/lno.11327
Damgaard, L. R., Kelly, C. L., Casciotti, K. L., Ward, B. B., Revsbech, N. P. (2020). Amperometric sensor for nanomolar nitrous oxide analysis. Analytica chimica acta, 1101, 135-140. doi:10.1016/j.aca.2019.12.019
Jenkins, W. J., Hatta, M. Fitzsimmons, J. N., Schlitzer, R., Lanning, N. T., Shiller, A., Buckley, N. R., German, C. R., Lott, D. E., Weiss, G., Whitmore, L., Casciotti, K., Lam, P. J., Cutter, G. A., Cahill, K. L. (2020). An intermediate-depth source of hydrothermal 3He and dissolved iron in the North Pacific. Earth and Planetary Science Letters, 539, 116223. doi:10.1016/j.epsl.2020.116223
2019
Zhang, G., Liu, S., Casciotti, K. L., Forbes, M. S., Gu, X., Ren, Y., Zheng, W. (2019). Distribution of Concentration and Stable Isotopic Composition of N2O in the Shelf and Slope of the Northern South China Sea: Implications for Production and Emission. Journal of Geophysical Research: Oceans, 124(8), 6218-6234. doi:10.1029/2019JC014947
Bouskill, N. J., Conrad, M. E., Bill, M., Brodie, E. L., Cheng, Y., Hobson, C., Forbes, M., Casciotti, K. L., Williams, K. H. (2010). Evidence for Microbial Mediated NO3- Cycling Within Floodplain Sediments During Groundwater Fluctuations. Frontiers in Earth Science, 7, 189. doi:10.3389/feart.2019.00189
Kobayashi, K., Makabe, A., Yano, M., Oshiki, M., Kindaichi, T., Casciotti, K. L., Okabe, S. (2019). Dual nitrogen and oxygen isotope fractionation during anaerobic ammonium oxidation by anammox bacteria. The ISME Journal, 13, 2426–2436. doi:10.1038/s41396-019-0440-x
Martin, T. S., Primeau, F., Casciotti, K. L. (2019). Modeling oceanic nitrate and nitrite concentrations and isotopes using a 3-D inverse N cycle model. Biogeosciences, 16(2), 347-367. doi:10.5194/bg-16-347-2019
Martin, T. S., Primeau, F., Casciotti, K. L. (2019). Assessing marine nitrogen cycle rates and process sensitivities with a global 3‐D inverse model. Global Biogeochemical Cycles, 33, 1026–1047. doi:10.1029/2018GB006088
2018
Fuchsman, C. A., Devol, A. H., Casciotti, K. L., Buchwald, C., Chang, B. X., Horak, R. A. (2018). An N isotopic mass balance of the Eastern Tropical North Pacific oxygen deficient zone. Deep Sea Research Part II, 156, 137-147. https://doi.org/10.1016/j.dsr2.2017.12.013
Peters, B., Horak, R., Devol, A., Fuchsman, C., Forbes, M., Mordy, C. W., Casciotti, K. L. (2018). Estimating fixed nitrogen loss and associated isotope effects using concentration and isotope measurements of NO3-, NO2-, and N-2 from the Eastern Tropical South Pacific oxygen deficient zone. Deep Sea Research Part II: Topical Studies in Oceanography, 156, 121-136. doi:10.1016/j.dsr2.2018.02.011
Casciotti, K. L., Forbes, M., Vedamati, J., Peters, B. D., Martin, T. S., Mordy, C. W. (2018). Nitrous oxide cycling in the Eastern Tropical South Pacific as inferred from isotopic and isotopomeric data. Deep Sea Research Part II: Topical Studies in Oceanography, 156, 155-167. doi:10.1016/j.dsr2.2018.07.014
Schlitzer, R., ..., Casciotti, K. L., ..., Peters, B., ..., Zurbick, Z. (2018). The GEOTRACES Intermediate Data Product 2017, Chemical Geology, 493, 210-223. doi:10.1016/j.chemgeo.2018.05.040
Meinhardt, K. A., Stopnisek, N., Pannu, M. W., Strand, S. E., Fransen, S. C., Casciotti, K. L., Stahl, D. A. (2018). Ammonia-oxidizing bacteria are the primary N2O producers in an ammonia-oxidizing archaea dominated alkaline agricultural soil. Environmental Microbiology, 20, 2195-2206. doi:10.1111/1462-2920.14246
Ostrom, N. E., Gandhi, H., Coplen, T. B., Toyoda, S., Bohlke, J. K., Brand, W. A., Casciotti, K. L., Dyckmans, J., Giesemann, A., Mohn, J., Well, R., Yu, L., Yoshida, N. (2018). Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needs. Rapid Communications in Mass Spectrometry, 32,1207-1214. doi:10.1002/rcm.8157
Knapp, A. N., Casciotti, K. L., Prokopenko, M. G. (2018). Dissolved organic nitrogen production and consumption in Eastern Tropical South Pacific Waters. 2018. Global Biogeochemical Cycles, 32, 769-783. doi:10.1029/2017GB005875
Peters, B. D., Jenkins, W. H., Swift, J. H., German, C. R., Moffett, J. W., Cutter, G. A., Brzezinski, M. A., Casciotti, K. L. (2018). Water mass analysis of the 2013 US GEOTRACES Eastern Pacific Zonal Transect (GP16). Marine Chemistry, 201, 6-19. doi:j.marchem.2017.09.007
Peters, B. D., Lam, P. J., Casciotti, K. L. (2018). Nitrogen and oxygen isotope measurements of NO3- along the US GEOTRACES Eastern Pacific Zonal Transect (GP16) yield insights into nitrate supply, remineralization, and water mass transport. Marine Chemistry, 201, 137-150. doi:j.marchem.2017.09.009
2017
Marconi, D., D.M. Sigman, K.L. Casciotti, E.C. Campbell, M.A. 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: 1608-1623. doi:10.1002/2016GB005613
Fassbender, A.J., ..., the participants of COME ABOARD, DISCO XXV1. 2017. Perspectives on Chemical Oceanography in a changing environment: Participants of the COME ABOARD Meeting examine the field in the context of 40 years of DISCO. Marine Chemistry 196: 181-190. doi:10.1016/j.marchem.2017.09.002
Sperber, C., O.A. Chadwick, K.L. Casciotti, K.G. Peay, C.A. Francis, A.E. Kim, P.M. Vitousek. 2017. Controls of nitrogen cycling evaluated along a well‐characterized climate gradient. Ecology 98: 1117-1129. doi:10.1002/ecy.1751
Martin, T.S. and K.L. Casciotti. 2017. Paired N and O isotopic analysis of nitrate and nitrite in the Arabian Sea oxygen deficient zone. Deep Sea Research I 121: 121-131. doi:10.1016/j.dsr.2017.01.002
Babbin, A.R., B.D. Peters, C.W. Mordy, B. Widner, K.L. Casciotti, B.B. Ward. 2017. Multiple metabolisms constrain the anaerobic nitrite budget in the Eastern Tropical South Pacific. Global Biogeochemical Cycles 31: 258-271. doi:10.1002/2016GB005407