High biolability of ancient permafrost carbon upon thaw
Ongoing climate warming in the Arctic will thaw permafrost and remobilize substantial terrestrial organic carbon (OC) pools. Around a quarter of northern permafrost OC resides in Siberian Yedoma deposits, the oldest form of permafrost carbon. However, our understanding of the degradation and fate of...
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/13297/ https://doi.org/10.1002/grl.50348 |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:13297 2023-05-15T14:55:02+02:00 High biolability of ancient permafrost carbon upon thaw Vonk, Jorien Mann, Paul Davydov, Sergey Davydova, Anna Spencer, Robert Schade, John Sobczak, William Zimov, Nikita Zimov, Sergei Bulygina, Ekaterina Eglinton, Timothy Holmes, Robert 2013-06 https://nrl.northumbria.ac.uk/id/eprint/13297/ https://doi.org/10.1002/grl.50348 unknown Wiley-Blackwell Vonk, Jorien, Mann, Paul, Davydov, Sergey, Davydova, Anna, Spencer, Robert, Schade, John, Sobczak, William, Zimov, Nikita, Zimov, Sergei, Bulygina, Ekaterina, Eglinton, Timothy and Holmes, Robert (2013) High biolability of ancient permafrost carbon upon thaw. Geophysical Research Letters, 40 (11). pp. 2689-2693. ISSN 0094-8276 C100 Biology C500 Microbiology C900 Others in Biological Sciences F700 Ocean Sciences Article PeerReviewed 2013 ftunivnorthumb https://doi.org/10.1002/grl.50348 2022-09-25T05:58:01Z Ongoing climate warming in the Arctic will thaw permafrost and remobilize substantial terrestrial organic carbon (OC) pools. Around a quarter of northern permafrost OC resides in Siberian Yedoma deposits, the oldest form of permafrost carbon. However, our understanding of the degradation and fate of this ancient OC in coastal and fluvial environments still remains rudimentary. Here, we show that ancient dissolved OC (DOC, >21,000 14C years), the oldest DOC ever reported, is mobilized in stream waters draining Yedoma outcrops. Furthermore, this DOC is highly biolabile: 34 ± 0.8% was lost during a 14 day incubation under dark, oxygenated conditions at ambient river temperatures. Mixtures of Yedoma stream DOC with mainstem river and ocean waters, mimicking in situ mixing processes, also showed high DOC losses (14 days; 17 ± 0.8% to 33 ± 1.0%). This suggests that this exceptionally old DOC is among the most biolabile DOC in any previously reported contemporary river or stream in the Arctic. Article in Journal/Newspaper Arctic permafrost Northumbria University, Newcastle: Northumbria Research Link (NRL) Arctic Geophysical Research Letters 40 11 2689 2693 |
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Northumbria University, Newcastle: Northumbria Research Link (NRL) |
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ftunivnorthumb |
language |
unknown |
topic |
C100 Biology C500 Microbiology C900 Others in Biological Sciences F700 Ocean Sciences |
spellingShingle |
C100 Biology C500 Microbiology C900 Others in Biological Sciences F700 Ocean Sciences Vonk, Jorien Mann, Paul Davydov, Sergey Davydova, Anna Spencer, Robert Schade, John Sobczak, William Zimov, Nikita Zimov, Sergei Bulygina, Ekaterina Eglinton, Timothy Holmes, Robert High biolability of ancient permafrost carbon upon thaw |
topic_facet |
C100 Biology C500 Microbiology C900 Others in Biological Sciences F700 Ocean Sciences |
description |
Ongoing climate warming in the Arctic will thaw permafrost and remobilize substantial terrestrial organic carbon (OC) pools. Around a quarter of northern permafrost OC resides in Siberian Yedoma deposits, the oldest form of permafrost carbon. However, our understanding of the degradation and fate of this ancient OC in coastal and fluvial environments still remains rudimentary. Here, we show that ancient dissolved OC (DOC, >21,000 14C years), the oldest DOC ever reported, is mobilized in stream waters draining Yedoma outcrops. Furthermore, this DOC is highly biolabile: 34 ± 0.8% was lost during a 14 day incubation under dark, oxygenated conditions at ambient river temperatures. Mixtures of Yedoma stream DOC with mainstem river and ocean waters, mimicking in situ mixing processes, also showed high DOC losses (14 days; 17 ± 0.8% to 33 ± 1.0%). This suggests that this exceptionally old DOC is among the most biolabile DOC in any previously reported contemporary river or stream in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Vonk, Jorien Mann, Paul Davydov, Sergey Davydova, Anna Spencer, Robert Schade, John Sobczak, William Zimov, Nikita Zimov, Sergei Bulygina, Ekaterina Eglinton, Timothy Holmes, Robert |
author_facet |
Vonk, Jorien Mann, Paul Davydov, Sergey Davydova, Anna Spencer, Robert Schade, John Sobczak, William Zimov, Nikita Zimov, Sergei Bulygina, Ekaterina Eglinton, Timothy Holmes, Robert |
author_sort |
Vonk, Jorien |
title |
High biolability of ancient permafrost carbon upon thaw |
title_short |
High biolability of ancient permafrost carbon upon thaw |
title_full |
High biolability of ancient permafrost carbon upon thaw |
title_fullStr |
High biolability of ancient permafrost carbon upon thaw |
title_full_unstemmed |
High biolability of ancient permafrost carbon upon thaw |
title_sort |
high biolability of ancient permafrost carbon upon thaw |
publisher |
Wiley-Blackwell |
publishDate |
2013 |
url |
https://nrl.northumbria.ac.uk/id/eprint/13297/ https://doi.org/10.1002/grl.50348 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_relation |
Vonk, Jorien, Mann, Paul, Davydov, Sergey, Davydova, Anna, Spencer, Robert, Schade, John, Sobczak, William, Zimov, Nikita, Zimov, Sergei, Bulygina, Ekaterina, Eglinton, Timothy and Holmes, Robert (2013) High biolability of ancient permafrost carbon upon thaw. Geophysical Research Letters, 40 (11). pp. 2689-2693. ISSN 0094-8276 |
op_doi |
https://doi.org/10.1002/grl.50348 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
11 |
container_start_page |
2689 |
op_container_end_page |
2693 |
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1766326827499913216 |