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October 11, 2025Journal of Geophysical Research Oceans

Methanogenesis Reactivation in Oligotrophic Deep Subseafloor Sediments Following Environmental Constraint Alleviation: Anaerobic Incubation Evidence

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Authors

HLHongfei LaiChina Geological SurveyZKZenggui KuangChina Geological SurveyYDYinan DengMinistry of Natural Resources

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Implication

Anaerobic incubations uncover divergent methanogen dynamics in deep-sea sediments, suggesting implications for the carbon cycle.

Key Points

  • Divergent methanogen proliferation induces activation of methanogenesis in nutrient-limited conditions.
  • Group II-E revealed methylotrophic and acetotrophic methanogens, leading to distinct methane isotopic signatures.
  • Anaerobic incubation for 382 days demonstrated the influence of environmental stressors on methanogen activity.
  • Understanding these dynamics could enhance insights into microbial methane contribution to global carbon cycle.

Cite This Study

Lai et al. (2025) studied this question.

synapsesocial.com/papers/68e9b1c9ba7d64b6fc13274chttps://doi.org/10.1029/2025jc023163
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