Biogeosciences
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Articles | Volume 21, issue 19
Articles | Volume 21, issue 19
https://doi.org/10.5194/bg-21-4273-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-4273-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 19
Research article
 | 
01 Oct 2024
Research article |  | 01 Oct 2024

The geothermal gradient shapes microbial diversity and processes in natural-gas-bearing sedimentary aquifers

Taiki Katayama, Hideyoshi Yoshioka, Toshiro Yamanaka, Susumu Sakata, and Yasuaki Hanamura

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Short summary
To understand microbial processes in deep sedimentary environments where the majority of Earth’s prokaryotes are found, we investigated the microbial communities in microbial natural-gas-bearing aquifers at temperatures of 38–81°C, situated above nonmicrobial oil-bearing sediments. Our results indicate that microbial carbon and sulfur cycling is driven by geothermal heating, showing previously overlooked geothermal-heat-driven geochemical and microbiological processes in the deep biosphere.
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