Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds
Archaea mediating anaerobic methane oxidation are key in preventing methane produced in marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities in natural settings respond to changes in the flux of methane remains largely uncharacterized. We inv...
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ftunivtroemsoe:oai:munin.uit.no:10037/23131 2023-05-15T14:24:44+02:00 Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds Klasek, Scott A. Hong, Wei-Li Torres, Marta E. Ross, Stella Hostetler, Katelyn Portnov, Alexey Gründger, Friederike Colwell, Frederick S. 2021-11-02 https://hdl.handle.net/10037/23131 https://doi.org/10.1038/s41467-021-26549-5 eng eng Nature Nature Communications Norges forskningsråd: 255150 Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration/NORCRUST/ info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Klasek, Hong H, Torres ME, Ross, Hostetler, Portnov A, Gründger F, Colwell. Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds. Nature Communications. 2021;12 FRIDAID 1951035 doi:10.1038/s41467-021-26549-5 2041-1723 https://hdl.handle.net/10037/23131 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1038/s41467-021-26549-5 2021-11-24T23:54:45Z Archaea mediating anaerobic methane oxidation are key in preventing methane produced in marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities in natural settings respond to changes in the flux of methane remains largely uncharacterized. We investigate microbial communities in gas hydrate-bearing seafloor mounds at Storfjordrenna, offshore Svalbard in the high Arctic, where we identify distinct methane concentration profiles that include steady-state, recently-increasing subsurface diffusive flux, and active gas seepage. Populations of anaerobic methanotrophs and sulfate-reducing bacteria were highest at the seep site, while decreased community diversity was associated with a recent increase in methane influx. Despite high methane fluxes and methanotroph doubling times estimated at 5–9 months, microbial community responses were largely synchronous with the advancement of methane into shallower sediment horizons. Together, these provide a framework for interpreting subseafloor microbial responses to methane escape in a warming Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Storfjordrenna Svalbard University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Svalbard Nature Communications 12 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Klasek, Scott A. Hong, Wei-Li Torres, Marta E. Ross, Stella Hostetler, Katelyn Portnov, Alexey Gründger, Friederike Colwell, Frederick S. Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
description |
Archaea mediating anaerobic methane oxidation are key in preventing methane produced in marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities in natural settings respond to changes in the flux of methane remains largely uncharacterized. We investigate microbial communities in gas hydrate-bearing seafloor mounds at Storfjordrenna, offshore Svalbard in the high Arctic, where we identify distinct methane concentration profiles that include steady-state, recently-increasing subsurface diffusive flux, and active gas seepage. Populations of anaerobic methanotrophs and sulfate-reducing bacteria were highest at the seep site, while decreased community diversity was associated with a recent increase in methane influx. Despite high methane fluxes and methanotroph doubling times estimated at 5–9 months, microbial community responses were largely synchronous with the advancement of methane into shallower sediment horizons. Together, these provide a framework for interpreting subseafloor microbial responses to methane escape in a warming Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Klasek, Scott A. Hong, Wei-Li Torres, Marta E. Ross, Stella Hostetler, Katelyn Portnov, Alexey Gründger, Friederike Colwell, Frederick S. |
author_facet |
Klasek, Scott A. Hong, Wei-Li Torres, Marta E. Ross, Stella Hostetler, Katelyn Portnov, Alexey Gründger, Friederike Colwell, Frederick S. |
author_sort |
Klasek, Scott A. |
title |
Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds |
title_short |
Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds |
title_full |
Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds |
title_fullStr |
Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds |
title_full_unstemmed |
Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds |
title_sort |
distinct methane-dependent biogeochemical states in arctic seafloor gas hydrate mounds |
publisher |
Nature |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23131 https://doi.org/10.1038/s41467-021-26549-5 |
long_lat |
ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Arctic Arctic Ocean Storfjordrenna Svalbard |
geographic_facet |
Arctic Arctic Ocean Storfjordrenna Svalbard |
genre |
Arctic Arctic Arctic Ocean Storfjordrenna Svalbard |
genre_facet |
Arctic Arctic Arctic Ocean Storfjordrenna Svalbard |
op_relation |
Nature Communications Norges forskningsråd: 255150 Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration/NORCRUST/ info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Klasek, Hong H, Torres ME, Ross, Hostetler, Portnov A, Gründger F, Colwell. Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds. Nature Communications. 2021;12 FRIDAID 1951035 doi:10.1038/s41467-021-26549-5 2041-1723 https://hdl.handle.net/10037/23131 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1038/s41467-021-26549-5 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766297186263367680 |