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Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone

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Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone. / Thamdrup, Bo; Steinsdóttir, Herdís G.R.; Bertagnolli, Anthony D.; Padilla, Cory C.; Patin, Nastassia V.; Garcia-Robledo, Emilio; Bristow, Laura A.; Stewart, Frank J.

In: Limnology and Oceanography, Vol. 64, No. 6, 2019, p. 2569-2585.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Thamdrup, B, Steinsdóttir, HGR, Bertagnolli, AD, Padilla, CC, Patin, NV, Garcia-Robledo, E, Bristow, LA & Stewart, FJ 2019, 'Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone', Limnology and Oceanography, vol. 64, no. 6, pp. 2569-2585. https://doi.org/10.1002/lno.11235

APA

Thamdrup, B., Steinsdóttir, H. G. R., Bertagnolli, A. D., Padilla, C. C., Patin, N. V., Garcia-Robledo, E., ... Stewart, F. J. (2019). Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone. Limnology and Oceanography, 64(6), 2569-2585. https://doi.org/10.1002/lno.11235

CBE

Thamdrup B, Steinsdóttir HGR, Bertagnolli AD, Padilla CC, Patin NV, Garcia-Robledo E, Bristow LA, Stewart FJ. 2019. Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone. Limnology and Oceanography. 64(6):2569-2585. https://doi.org/10.1002/lno.11235

MLA

Vancouver

Thamdrup B, Steinsdóttir HGR, Bertagnolli AD, Padilla CC, Patin NV, Garcia-Robledo E et al. Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone. Limnology and Oceanography. 2019;64(6):2569-2585. https://doi.org/10.1002/lno.11235

Author

Thamdrup, Bo ; Steinsdóttir, Herdís G.R. ; Bertagnolli, Anthony D. ; Padilla, Cory C. ; Patin, Nastassia V. ; Garcia-Robledo, Emilio ; Bristow, Laura A. ; Stewart, Frank J. / Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone. In: Limnology and Oceanography. 2019 ; Vol. 64, No. 6. pp. 2569-2585.

Bibtex

@article{aae8de87ea2d47729c5bf194918b3146,
title = "Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone",
abstract = "We investigated methane oxidation in the oxygen minimum zone (OMZ) of the eastern tropical North Pacific (ETNP) off central Mexico. Methane concentrations in the anoxic core of the OMZ reached ~ 20 nmol L−1 at off shelf sites and 34 nmol L−1 at a shelf site. Rates of methane oxidation were determined in ship-board incubations with 3H-labeled methane at O2 concentrations 0–75 nmol L−1. In vertical profiles at off-shelf stations, highest rates were found between the secondary nitrite maximum at ~ 130 m and the methane maximum at 300–400 m in the anoxic core. Methane oxidation was inhibited by addition of 1 μmol L−1 oxygen, which, together with the depth distribution, indicated an anaerobic pathway. A coupling to nitrite reduction was further indicated by the inhibitory effect of the nitric oxide scavenger 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO). Metatranscriptomes from the anoxic OMZ core supported the likely involvement of nitrite-reducing bacteria of the NC10 clade in anaerobic methane oxidation, but also indicated a potential role for nitrate-reducing euryarchaeotal methane oxidizers (ANME-2d). Gammaproteobacteria of the Methanococcales were further detected in both 16S rRNA gene amplicons and metatranscriptomes, but the role of these presumed obligately aerobic methane oxidizers in the anoxic OMZ core is unclear. Given available estimates of water residence time, the measured rates and rate constants (up to ~ 1 yr−1) imply that anaerobic methane oxidation is a substantial methane sink in the ETNP OMZ and hence attenuates the emission of methane from this and possibly other OMZs.",
author = "Bo Thamdrup and Steinsd{\'o}ttir, {Herd{\'i}s G.R.} and Bertagnolli, {Anthony D.} and Padilla, {Cory C.} and Patin, {Nastassia V.} and Emilio Garcia-Robledo and Bristow, {Laura A.} and Stewart, {Frank J.}",
year = "2019",
doi = "10.1002/lno.11235",
language = "English",
volume = "64",
pages = "2569--2585",
journal = "Limnology and Oceanography",
issn = "0024-3590",
publisher = "JohnWiley & Sons, Inc.",
number = "6",

}

RIS

TY - JOUR

T1 - Anaerobic methane oxidation is an important sink for methane in the ocean's largest oxygen minimum zone

AU - Thamdrup, Bo

AU - Steinsdóttir, Herdís G.R.

AU - Bertagnolli, Anthony D.

AU - Padilla, Cory C.

AU - Patin, Nastassia V.

AU - Garcia-Robledo, Emilio

AU - Bristow, Laura A.

AU - Stewart, Frank J.

PY - 2019

Y1 - 2019

N2 - We investigated methane oxidation in the oxygen minimum zone (OMZ) of the eastern tropical North Pacific (ETNP) off central Mexico. Methane concentrations in the anoxic core of the OMZ reached ~ 20 nmol L−1 at off shelf sites and 34 nmol L−1 at a shelf site. Rates of methane oxidation were determined in ship-board incubations with 3H-labeled methane at O2 concentrations 0–75 nmol L−1. In vertical profiles at off-shelf stations, highest rates were found between the secondary nitrite maximum at ~ 130 m and the methane maximum at 300–400 m in the anoxic core. Methane oxidation was inhibited by addition of 1 μmol L−1 oxygen, which, together with the depth distribution, indicated an anaerobic pathway. A coupling to nitrite reduction was further indicated by the inhibitory effect of the nitric oxide scavenger 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO). Metatranscriptomes from the anoxic OMZ core supported the likely involvement of nitrite-reducing bacteria of the NC10 clade in anaerobic methane oxidation, but also indicated a potential role for nitrate-reducing euryarchaeotal methane oxidizers (ANME-2d). Gammaproteobacteria of the Methanococcales were further detected in both 16S rRNA gene amplicons and metatranscriptomes, but the role of these presumed obligately aerobic methane oxidizers in the anoxic OMZ core is unclear. Given available estimates of water residence time, the measured rates and rate constants (up to ~ 1 yr−1) imply that anaerobic methane oxidation is a substantial methane sink in the ETNP OMZ and hence attenuates the emission of methane from this and possibly other OMZs.

AB - We investigated methane oxidation in the oxygen minimum zone (OMZ) of the eastern tropical North Pacific (ETNP) off central Mexico. Methane concentrations in the anoxic core of the OMZ reached ~ 20 nmol L−1 at off shelf sites and 34 nmol L−1 at a shelf site. Rates of methane oxidation were determined in ship-board incubations with 3H-labeled methane at O2 concentrations 0–75 nmol L−1. In vertical profiles at off-shelf stations, highest rates were found between the secondary nitrite maximum at ~ 130 m and the methane maximum at 300–400 m in the anoxic core. Methane oxidation was inhibited by addition of 1 μmol L−1 oxygen, which, together with the depth distribution, indicated an anaerobic pathway. A coupling to nitrite reduction was further indicated by the inhibitory effect of the nitric oxide scavenger 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO). Metatranscriptomes from the anoxic OMZ core supported the likely involvement of nitrite-reducing bacteria of the NC10 clade in anaerobic methane oxidation, but also indicated a potential role for nitrate-reducing euryarchaeotal methane oxidizers (ANME-2d). Gammaproteobacteria of the Methanococcales were further detected in both 16S rRNA gene amplicons and metatranscriptomes, but the role of these presumed obligately aerobic methane oxidizers in the anoxic OMZ core is unclear. Given available estimates of water residence time, the measured rates and rate constants (up to ~ 1 yr−1) imply that anaerobic methane oxidation is a substantial methane sink in the ETNP OMZ and hence attenuates the emission of methane from this and possibly other OMZs.

UR - http://www.scopus.com/inward/record.url?scp=85074882414&partnerID=8YFLogxK

U2 - 10.1002/lno.11235

DO - 10.1002/lno.11235

M3 - Journal article

AN - SCOPUS:85074882414

VL - 64

SP - 2569

EP - 2585

JO - Limnology and Oceanography

JF - Limnology and Oceanography

SN - 0024-3590

IS - 6

ER -