Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Volume 12, issue 24 | Copyright
Biogeosciences, 12, 7483-7502, 2015
https://doi.org/10.5194/bg-12-7483-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 21 Dec 2015

Research article | 21 Dec 2015

Nitrogen cycling in the deep sedimentary biosphere: nitrate isotopes in porewaters underlying the oligotrophic North Atlantic

S. D. Wankel et al.
Related authors
Nitrogen isotope fractionation during gas-to-particle conversion of NOx to NO3 in the atmosphere – implications for isotope-based NOx source apportionment
Yunhua Chang, Yanlin Zhang, Chongguo Tian, Shichun Zhang, Xiaoyan Ma, Fang Cao, Xiaoyan Liu, Wenqi Zhang, Thomas Kuhn, and Moritz F. Lehmann
Atmos. Chem. Phys., 18, 11647-11661, https://doi.org/10.5194/acp-18-11647-2018,https://doi.org/10.5194/acp-18-11647-2018, 2018
Alteration of nitrous oxide emissions from floodplain soils by aggregate size, litter accumulation and plant soil interactions
Martin Ley, Moritz F. Lehmann, Pascal A. Niklaus, and Jörg Luster
Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-281,https://doi.org/10.5194/bg-2018-281, 2018
Revised manuscript accepted for BG
Effects of low oxygen concentrations on aerobic methane oxidation in seasonally hypoxic coastal waters
Lea Steinle, Johanna Maltby, Tina Treude, Annette Kock, Hermann W. Bange, Nadine Engbersen, Jakob Zopfi, Moritz F. Lehmann, and Helge Niemann
Biogeosciences, 14, 1631-1645, https://doi.org/10.5194/bg-14-1631-2017,https://doi.org/10.5194/bg-14-1631-2017, 2017
Monodeuterated methane: an isotopic probe to measure biological methane metabolism rates and track catabolic exchange reactions
Jeffrey J. Marlow, Joshua A. Steele, Wiebke Ziebis, Silvan Scheller, David Case, and Victoria J. Orphan
Biogeosciences Discuss., https://doi.org/10.5194/bg-2016-202,https://doi.org/10.5194/bg-2016-202, 2016
Revised manuscript not accepted
Year-round N2O production by benthic NOx reduction in a monomictic south-alpine lake
C. V. Freymond, C. B. Wenk, C. H. Frame, and M. F. Lehmann
Biogeosciences, 10, 8373-8383, https://doi.org/10.5194/bg-10-8373-2013,https://doi.org/10.5194/bg-10-8373-2013, 2013
Related subject area
Biogeochemistry: Sediment
Vivianite formation in methane-rich deep-sea sediments from the South China Sea
Jiarui Liu, Gareth Izon, Jiasheng Wang, Gilad Antler, Zhou Wang, Jie Zhao, and Matthias Egger
Biogeosciences, 15, 6329-6348, https://doi.org/10.5194/bg-15-6329-2018,https://doi.org/10.5194/bg-15-6329-2018, 2018
Variations in river input of iron impact sedimentary phosphorus burial in an oligotrophic Baltic Sea estuary
Wytze K. Lenstra, Matthias Egger, Niels A. G. M. van Helmond, Emma Kritzberg, Daniel J. Conley, and Caroline P. Slomp
Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-327,https://doi.org/10.5194/bg-2018-327, 2018
Revised manuscript accepted for BG
Benthic archaea as potential sources of tetraether membrane lipids in sediments across an oxygen minimum zone
Marc A. Besseling, Ellen C. Hopmans, R. Christine Boschman, Jaap S. Sinninghe Damsté, and Laura Villanueva
Biogeosciences, 15, 4047-4064, https://doi.org/10.5194/bg-15-4047-2018,https://doi.org/10.5194/bg-15-4047-2018, 2018
Carbon amendment stimulates benthic nitrogen cycling during the bioremediation of particulate aquaculture waste
Georgina Robinson, Thomas MacTavish, Candida Savage, Gary S. Caldwell, Clifford L. W. Jones, Trevor Probyn, Bradley D. Eyre, and Selina M. Stead
Biogeosciences, 15, 1863-1878, https://doi.org/10.5194/bg-15-1863-2018,https://doi.org/10.5194/bg-15-1863-2018, 2018
Modelling biogeochemical processes in sediments from the north-western Adriatic Sea: response to enhanced particulate organic carbon fluxes
Daniele Brigolin, Christophe Rabouille, Bruno Bombled, Silvia Colla, Salvatrice Vizzini, Roberto Pastres, and Fabio Pranovi
Biogeosciences, 15, 1347-1366, https://doi.org/10.5194/bg-15-1347-2018,https://doi.org/10.5194/bg-15-1347-2018, 2018
Cited articles
Altabet, M. A.: Variations in nitrogen isotopic compostion between sinking and suspended particles: Implications for nitrogen cycling and particle transformations in the open ocean, Deep-Sea Re. Pt. I, 35, 535–554, 1988.
Altabet, M. A.: A time-series study of the vertical structure of nitrogen and particle dynamics in the Sargasso Sea, Limnol. Oceanogr., 34, 1185–1201, 1989.
Altabet, M. A., Pilskaln, C., Thunell, R. C., Pride, C., Sigman, D. M., Chavez, F. P., and Francois, R.: The nitrogen isotope biogeochemistry of sinking particles from the margin of the Eastern North Pacific, Deep-Sea Res. Pt. I, 46, 655–679, 1999.
Andersson, K. K. and Hooper, A. B.: O2 and H2O are each the source of one O in NO2 produced from NH3 by Nitrosomonas: 15N-NMR evidence, FEBS Lett., 164, 236–240, 1983.
Barford, C. C., Montoya, J. P., Atlabet, M. A., and Mitchell, R.: Steady-state Nitrogen Isotope Effects of N2 and N2O Production in Paracoccus denitrificans, Appl. Environ. Microb., 65, 989–994, 1999.
Publications Copernicus
Download
Short summary
In the sediments underlying the global oligotrophic ocean, low levels of microbial activity persist, despite low input of organic matter from surface ocean productivity. Using measured nitrogen and oxygen isotopes of porewater nitrate we estimate the magnitude and extent of microbial nitrogen cycling. We find evidence for the overlap of both denitrification as well as autotrophic pathways such as nitrification and nitrogen fixation, pointing to a relatively large role for subsurface autotrophy.
In the sediments underlying the global oligotrophic ocean, low levels of microbial activity...
Citation
Share