Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau
With global warming, the dramatic retreat of glaciers in the Tibetan Plateau (TP) might accelerate release of stored methane (CH4) into the atmosphere; thus, this region might become a new source of CH4. CH4-metabolic microbial communities can produce or consume CH4 in the environment, which is crit...
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ftmdpi:oai:mdpi.com:/2071-1050/15/9/7352/ 2023-08-20T04:07:10+02:00 Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau Yuchan Guo Shuhong Zhang agris 2023-04-28 application/pdf https://doi.org/10.3390/su15097352 EN eng Multidisciplinary Digital Publishing Institute Air, Climate Change and Sustainability https://dx.doi.org/10.3390/su15097352 https://creativecommons.org/licenses/by/4.0/ Sustainability; Volume 15; Issue 9; Pages: 7352 methane budget Tibetan Plateau glacier terminus methanogen methanotroph Text 2023 ftmdpi https://doi.org/10.3390/su15097352 2023-08-01T09:53:20Z With global warming, the dramatic retreat of glaciers in the Tibetan Plateau (TP) might accelerate release of stored methane (CH4) into the atmosphere; thus, this region might become a new source of CH4. CH4-metabolic microbial communities can produce or consume CH4 in the environment, which is critical for evaluating the CH4 budget of glaciers. However, studies on the influence of CH4-metabolic microbial communities on the CH4 budget during glacier retreat in the TP remain scarce. In this work, ice samples were collected at the terminus of the Guliya Ice Cap in the northwestern TP. The community composition of CH4-metabolic microorganisms, including methanogens and methanotrophs, was determined using genomic analysis, and the metabolic rates of the two microorganisms were further estimated. The abundance of methanotrophs in Guliya was one order of magnitude higher than that of methanogens. The CH4 consumption flux by the combined action of the two microorganisms was ca. 1.42 × 103 pmol·mL−1·d−1, suggesting that CH4 metabolic microbial communities in the glacier might be an important CH4 sink, and can reduce subglacial CH4 emission during glacier retreat. This is important for predicting the CH4 budget in glaciers on the TP and corresponding climate impacts during glacier retreat. Text Ice cap MDPI Open Access Publishing Sustainability 15 9 7352 |
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Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
methane budget Tibetan Plateau glacier terminus methanogen methanotroph |
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methane budget Tibetan Plateau glacier terminus methanogen methanotroph Yuchan Guo Shuhong Zhang Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau |
topic_facet |
methane budget Tibetan Plateau glacier terminus methanogen methanotroph |
description |
With global warming, the dramatic retreat of glaciers in the Tibetan Plateau (TP) might accelerate release of stored methane (CH4) into the atmosphere; thus, this region might become a new source of CH4. CH4-metabolic microbial communities can produce or consume CH4 in the environment, which is critical for evaluating the CH4 budget of glaciers. However, studies on the influence of CH4-metabolic microbial communities on the CH4 budget during glacier retreat in the TP remain scarce. In this work, ice samples were collected at the terminus of the Guliya Ice Cap in the northwestern TP. The community composition of CH4-metabolic microorganisms, including methanogens and methanotrophs, was determined using genomic analysis, and the metabolic rates of the two microorganisms were further estimated. The abundance of methanotrophs in Guliya was one order of magnitude higher than that of methanogens. The CH4 consumption flux by the combined action of the two microorganisms was ca. 1.42 × 103 pmol·mL−1·d−1, suggesting that CH4 metabolic microbial communities in the glacier might be an important CH4 sink, and can reduce subglacial CH4 emission during glacier retreat. This is important for predicting the CH4 budget in glaciers on the TP and corresponding climate impacts during glacier retreat. |
format |
Text |
author |
Yuchan Guo Shuhong Zhang |
author_facet |
Yuchan Guo Shuhong Zhang |
author_sort |
Yuchan Guo |
title |
Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau |
title_short |
Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau |
title_full |
Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau |
title_fullStr |
Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau |
title_full_unstemmed |
Potential Effects of Methane Metabolic Microbial Communities on the Glacial Methane Budget in the Northwestern Tibetan Plateau |
title_sort |
potential effects of methane metabolic microbial communities on the glacial methane budget in the northwestern tibetan plateau |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/su15097352 |
op_coverage |
agris |
genre |
Ice cap |
genre_facet |
Ice cap |
op_source |
Sustainability; Volume 15; Issue 9; Pages: 7352 |
op_relation |
Air, Climate Change and Sustainability https://dx.doi.org/10.3390/su15097352 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/su15097352 |
container_title |
Sustainability |
container_volume |
15 |
container_issue |
9 |
container_start_page |
7352 |
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