Articles | Volume 16, issue 10
Biogeosciences, 16, 2221–2232, 2019
https://doi.org/10.5194/bg-16-2221-2019
Biogeosciences, 16, 2221–2232, 2019
https://doi.org/10.5194/bg-16-2221-2019
Research article
29 May 2019
Research article | 29 May 2019

Fracture-controlled fluid transport supports microbial methane-oxidizing communities at Vestnesa Ridge

Haoyi Yao et al.

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Cited articles

Anders, M. H., Laubach, S. E., and Scholz, C. H.: Microfractures: A review, J. Struct. Geol., 69, 377–394, https://doi.org/10.1016/j.jsg.2014.05.011, 2014. 
Bernhard, J. M. and Panieri, G.: Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria, Sci. Rep.-UK, 8, 10610, https://doi.org/10.1038/s41598-018-28871-3, 2018. 
Blees, J., Niemann, H., Wenk, C. B., Zopfi, J., Schubert, C. J., Jenzer, J. S., Veronesi, M., and Lehman, M. F.: Bacterial methanotrophs drive the formation of a seasonal anoxic benthic nepheloid layer in an alpine lake, Limnol. Oceanogr., 59, 1410–1420, https://doi.org/10.4319/lo.2014.59.4.1410, 2014. 
Boetius, A. and Suess, E.: Hydrate Ridge: a natural laboratory for the study of microbial life fueled by methane from near-surface gas hydrates, Chem. Geol., 205, 291–310, https://doi.org/10.1016/j.chemgeo.2003.12.034, 2004. 
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Short summary
How methane is transported in the sediment is important for the microbial community living on methane. Here we report an observation of a mini-fracture that facilitates the advective gas transport of methane in the sediment, compared to the diffusive fluid transport without a fracture. We found contrasting bio-geochemical signals in these different transport modes. This finding can help to fill the gap in the fracture network system in modulating methane dynamics in surface sediments.
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