Articles | Volume 19, issue 1
https://doi.org/10.5194/bg-19-201-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-201-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Jan 2022
Research article |
| 13 Jan 2022
| 13 Jan 2022
Bacteriohopanetetrol-x: constraining its application as a lipid biomarker for marine anammox using the water column oxygen gradient of the Benguela upwelling system
Zoë R. van Kemenade
CORRESPONDING AUTHOR
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
Laura Villanueva
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
Department of Earth Sciences, Geochemistry, Faculty of Geosciences,
University of Utrecht, Utrecht, the Netherlands
Ellen C. Hopmans
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
Peter Kraal
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, the Netherlands
Harry J. Witte
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
Jaap S. Sinninghe Damsté
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
Department of Earth Sciences, Geochemistry, Faculty of Geosciences,
University of Utrecht, Utrecht, the Netherlands
Darci Rush
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal
Netherlands Institute for Sea Research, Den Burg, the Netherlands
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Short summary
Anaerobic ammonium oxidation (anammox) is an important nitrogen-removal process in the ocean. We assess the distribution of bacteriohopanetetrol-x (BHT-x), used to trace past anammox, along a redox gradient in the water column of the Benguela upwelling system. BHT-x / BHT ratios of >0.18 correspond to the presence of living anammox bacteria and oxygen levels <50 μmol L−1. This allows for a more robust application of BHT-x to trace past marine anammox and deoxygenation in dynamic marine systems.
Anaerobic ammonium oxidation (anammox) is an important nitrogen-removal process in the ocean. We...
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