Evidence of cryptic methane cycling and non-methanogenic methylamine consumption in the sulfate-reducing zone of sediment in the Santa Barbara Basin, California

Krause, Sebastian J. E.; Liu, Jiarui; Yousavich, David J.; Robinson, DeMarcus; Hoyt, David W.; Qin, Qianhui; Wenzhöfer, Frank; Janssen, Felix; Valentine, David L.; Treude, Tina

doi:https://doi.org/10.5194/bg-20-4377-2023

Articles | Volume 20, issue 20

https://doi.org/10.5194/bg-20-4377-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-4377-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 20

Research article

|

26 Oct 2023

Research article |

| 26 Oct 2023

Evidence of cryptic methane cycling and non-methanogenic methylamine consumption in the sulfate-reducing zone of sediment in the Santa Barbara Basin, California

Sebastian J. E. Krause, Jiarui Liu, David J. Yousavich, DeMarcus Robinson, David W. Hoyt, Qianhui Qin, Frank Wenzhöfer, Felix Janssen, David L. Valentine, and Tina Treude

Supplement

https://doi.org/10.5194/bg-20-4377-2023-supplement

Data sets

Porewater geochemistry of sediments collected Fall 2019 in the Santa Barbara Basin using ROV Jason during R/V Atlantis cruise AT42-19, Version 1 T. Treude and D. L. Valentine https://doi.org/10.26008/1912/bco-dmo.867007.1

Porosity and density of sediments collected Fall 2019 in the Santa Barbara Basin using ROV Jason during R/V Atlantis cruise AT42-19, Version 1, T. Treude, and D. L. Valentine https://doi.org/10.26008/1912/bco-dmo.867113.1

Microbial activity from sediments collected Fall 2019 in the Santa Barbara Basin using ROV Jason during R/V Atlantis cruise AT42-19, Version 1, T. Treude, and D. L. Valentine https://doi.org/10.26008/1912/bco-dmo.867221.1

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Short summary

Methane is a potent greenhouse gas, and hence it is important to understand its sources and sinks in the environment. Here we present new data from organic-rich surface sediments below an oxygen minimum zone off the coast of California (Santa Barbara Basin) demonstrating the simultaneous microbial production and consumption of methane, which appears to be an important process preventing the build-up of methane in these sediments and the emission into the water column and atmosphere.