Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds
Abstract 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 uncharacterize...
Published in: | Nature Communications |
---|---|
Main Authors: | , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/s41467-021-26549-5 https://www.nature.com/articles/s41467-021-26549-5.pdf https://www.nature.com/articles/s41467-021-26549-5 |
id |
crspringernat:10.1038/s41467-021-26549-5 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1038/s41467-021-26549-5 2023-05-15T14:49:42+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. Norges Forskningsråd 2021 http://dx.doi.org/10.1038/s41467-021-26549-5 https://www.nature.com/articles/s41467-021-26549-5.pdf https://www.nature.com/articles/s41467-021-26549-5 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 12, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2021 crspringernat https://doi.org/10.1038/s41467-021-26549-5 2022-01-04T16:05:19Z Abstract 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 Ocean Storfjordrenna Svalbard Springer Nature (via Crossref) Arctic Arctic Ocean Svalbard Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Nature Communications 12 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
spellingShingle |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry 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 |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract 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. |
author2 |
Norges Forskningsråd |
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 |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41467-021-26549-5 https://www.nature.com/articles/s41467-021-26549-5.pdf https://www.nature.com/articles/s41467-021-26549-5 |
long_lat |
ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Arctic Arctic Ocean Svalbard Storfjordrenna |
geographic_facet |
Arctic Arctic Ocean Svalbard Storfjordrenna |
genre |
Arctic Arctic Ocean Storfjordrenna Svalbard |
genre_facet |
Arctic Arctic Ocean Storfjordrenna Svalbard |
op_source |
Nature Communications volume 12, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-26549-5 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766320790848929792 |