Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia
Abstract Permafrost thaw leads to thermokarst lake formation and talik growth tens of meters deep, enabling microbial decomposition of formerly frozen organic matter (OM). We analyzed two 17‐m‐long thermokarst lake sediment cores taken in Central Yakutia, Russia. One core was from an Alas lake in a...
Published in: | Global Change Biology |
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Online Access: | http://dx.doi.org/10.1111/gcb.15566 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15566 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.15566 |
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crwiley:10.1111/gcb.15566 2024-06-02T08:02:55+00:00 Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia Jongejans, Loeka L. Liebner, Susanne Knoblauch, Christian Mangelsdorf, Kai Ulrich, Mathias Grosse, Guido Tanski, George Fedorov, Alexander N. Konstantinov, Pavel Ya. Windirsch, Torben Wiedmann, Julia Strauss, Jens Deutsche Bundesstiftung Umwelt Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft H2020 European Research Council 2021 http://dx.doi.org/10.1111/gcb.15566 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15566 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.15566 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Global Change Biology volume 27, issue 12, page 2822-2839 ISSN 1354-1013 1365-2486 journal-article 2021 crwiley https://doi.org/10.1111/gcb.15566 2024-05-03T11:57:03Z Abstract Permafrost thaw leads to thermokarst lake formation and talik growth tens of meters deep, enabling microbial decomposition of formerly frozen organic matter (OM). We analyzed two 17‐m‐long thermokarst lake sediment cores taken in Central Yakutia, Russia. One core was from an Alas lake in a Holocene thermokarst basin that underwent multiple lake generations, and the second core from a young Yedoma upland lake (formed ~70 years ago) whose sediments have thawed for the first time since deposition. This comparison provides a glance into OM fate in thawing Yedoma deposits. We analyzed total organic carbon (TOC) and dissolved organic carbon (DOC) content, n ‐alkane concentrations, and bacterial and archaeal membrane markers. Furthermore, we conducted 1‐year‐long incubations (4°C, dark) and measured anaerobic carbon dioxide (CO 2 ) and methane (CH 4 ) production. The sediments from both cores contained little TOC (0.7 ± 0.4 wt%), but DOC values were relatively high, with the highest values in the frozen Yedoma lake sediments (1620 mg L −1 ). Cumulative greenhouse gas (GHG) production after 1 year was highest in the Yedoma lake sediments (226 ± 212 µg CO 2 ‐C g −1 dw, 28 ± 36 µg CH 4 ‐C g −1 dw) and 3 and 1.5 times lower in the Alas lake sediments, respectively (75 ± 76 µg CO 2 ‐C g −1 dw, 19 ± 29 µg CH 4 ‐C g −1 dw). The highest CO 2 production in the frozen Yedoma lake sediments likely results from decomposition of readily bioavailable OM, while highest CH 4 production in the non‐frozen top sediments of this core suggests that methanogenic communities established upon thaw. The lower GHG production in the non‐frozen Alas lake sediments resulted from advanced OM decomposition during Holocene talik development. Furthermore, we found that drivers of CO 2 and CH 4 production differ following thaw. Our results suggest that GHG production from TOC‐poor mineral deposits, which are widespread throughout the Arctic, can be substantial. Therefore, our novel data are relevant for vast ice‐rich permafrost deposits ... Article in Journal/Newspaper Arctic Ice permafrost Thermokarst Yakutia Siberia Wiley Online Library Arctic Talik ENVELOPE(146.601,146.601,59.667,59.667) Global Change Biology 27 12 2822 2839 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Permafrost thaw leads to thermokarst lake formation and talik growth tens of meters deep, enabling microbial decomposition of formerly frozen organic matter (OM). We analyzed two 17‐m‐long thermokarst lake sediment cores taken in Central Yakutia, Russia. One core was from an Alas lake in a Holocene thermokarst basin that underwent multiple lake generations, and the second core from a young Yedoma upland lake (formed ~70 years ago) whose sediments have thawed for the first time since deposition. This comparison provides a glance into OM fate in thawing Yedoma deposits. We analyzed total organic carbon (TOC) and dissolved organic carbon (DOC) content, n ‐alkane concentrations, and bacterial and archaeal membrane markers. Furthermore, we conducted 1‐year‐long incubations (4°C, dark) and measured anaerobic carbon dioxide (CO 2 ) and methane (CH 4 ) production. The sediments from both cores contained little TOC (0.7 ± 0.4 wt%), but DOC values were relatively high, with the highest values in the frozen Yedoma lake sediments (1620 mg L −1 ). Cumulative greenhouse gas (GHG) production after 1 year was highest in the Yedoma lake sediments (226 ± 212 µg CO 2 ‐C g −1 dw, 28 ± 36 µg CH 4 ‐C g −1 dw) and 3 and 1.5 times lower in the Alas lake sediments, respectively (75 ± 76 µg CO 2 ‐C g −1 dw, 19 ± 29 µg CH 4 ‐C g −1 dw). The highest CO 2 production in the frozen Yedoma lake sediments likely results from decomposition of readily bioavailable OM, while highest CH 4 production in the non‐frozen top sediments of this core suggests that methanogenic communities established upon thaw. The lower GHG production in the non‐frozen Alas lake sediments resulted from advanced OM decomposition during Holocene talik development. Furthermore, we found that drivers of CO 2 and CH 4 production differ following thaw. Our results suggest that GHG production from TOC‐poor mineral deposits, which are widespread throughout the Arctic, can be substantial. Therefore, our novel data are relevant for vast ice‐rich permafrost deposits ... |
author2 |
Deutsche Bundesstiftung Umwelt Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft H2020 European Research Council |
format |
Article in Journal/Newspaper |
author |
Jongejans, Loeka L. Liebner, Susanne Knoblauch, Christian Mangelsdorf, Kai Ulrich, Mathias Grosse, Guido Tanski, George Fedorov, Alexander N. Konstantinov, Pavel Ya. Windirsch, Torben Wiedmann, Julia Strauss, Jens |
spellingShingle |
Jongejans, Loeka L. Liebner, Susanne Knoblauch, Christian Mangelsdorf, Kai Ulrich, Mathias Grosse, Guido Tanski, George Fedorov, Alexander N. Konstantinov, Pavel Ya. Windirsch, Torben Wiedmann, Julia Strauss, Jens Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia |
author_facet |
Jongejans, Loeka L. Liebner, Susanne Knoblauch, Christian Mangelsdorf, Kai Ulrich, Mathias Grosse, Guido Tanski, George Fedorov, Alexander N. Konstantinov, Pavel Ya. Windirsch, Torben Wiedmann, Julia Strauss, Jens |
author_sort |
Jongejans, Loeka L. |
title |
Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia |
title_short |
Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia |
title_full |
Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia |
title_fullStr |
Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia |
title_full_unstemmed |
Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia |
title_sort |
greenhouse gas production and lipid biomarker distribution in yedoma and alas thermokarst lake sediments in eastern siberia |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/gcb.15566 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15566 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.15566 |
long_lat |
ENVELOPE(146.601,146.601,59.667,59.667) |
geographic |
Arctic Talik |
geographic_facet |
Arctic Talik |
genre |
Arctic Ice permafrost Thermokarst Yakutia Siberia |
genre_facet |
Arctic Ice permafrost Thermokarst Yakutia Siberia |
op_source |
Global Change Biology volume 27, issue 12, page 2822-2839 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.15566 |
container_title |
Global Change Biology |
container_volume |
27 |
container_issue |
12 |
container_start_page |
2822 |
op_container_end_page |
2839 |
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1800747375944269824 |