Organic matter composition and greenhouse gas production of thawing subsea permafrost in the Laptev Sea
Subsea permafrost represents a large carbon pool that might be or become a significant greenhouse gas source. Scarcity of observational data causes large uncertainties. We here use five 21-56 m long subsea permafrost cores from the Laptev Sea to constrain organic carbon (OC) storage and sources, deg...
| Published in: | Nature communications Vol. 13. P. 5057 (1-12) |
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| Other Authors: | , , , , , , , , , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996466 Перейти в каталог НБ ТГУ |
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| 024 | 7 | |a 10.1038/s41467-022-32696-0 |2 doi | |
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| 245 | 1 | 0 | |a Organic matter composition and greenhouse gas production of thawing subsea permafrost in the Laptev Sea |c B. Wild, N. Shakhova, O. V. Dudarev [et al.] |
| 336 | |a Текст | ||
| 337 | |a электронный | ||
| 504 | |a Библиогр.: 74 назв. | ||
| 520 | 3 | |a Subsea permafrost represents a large carbon pool that might be or become a significant greenhouse gas source. Scarcity of observational data causes large uncertainties. We here use five 21-56 m long subsea permafrost cores from the Laptev Sea to constrain organic carbon (OC) storage and sources, degradation state and potential greenhouse gas production upon thaw. Grain sizes, optically-stimulated luminescence and biomarkers suggest deposition of aeolian silt and fluvial sand over 160 000 years, with dominant fluvial/alluvial deposition of forest- and tundra-derived organic matter. We estimate an annual thaw rate of 1.3 ± 0.6 kg OC m−2 in subsea permafrost in the area, nine-fold exceeding organic carbon thaw rates for terrestrial permafrost. During 20-month incubations, CH4 and CO2 production averaged 1.7 nmol and 2.4 µmol g−1 OC d−1, providing a baseline to assess the contribution of subsea permafrost to the high CH4 fluxes and strong ocean acidification observed in the region. | |
| 653 | |a Лаптевых море | ||
| 653 | |a парниковые газы | ||
| 653 | |a подводная мерзлота | ||
| 655 | 4 | |a статьи в журналах |9 879358 | |
| 700 | 1 | |a Wild, Birgit |9 857155 | |
| 700 | 1 | |a Shakhova, Natalia |9 875975 | |
| 700 | 1 | |a Dudarev, Oleg V. |9 814952 | |
| 700 | 1 | |a Ruban, Alexey |9 876082 | |
| 700 | 1 | |a Kosmach, Denis |9 876101 | |
| 700 | 1 | |a Tumskoy, Vladimir |9 876102 | |
| 700 | 1 | |a Tesi, Tommaso |9 876094 | |
| 700 | 1 | |a Grimm, Hanna |9 876103 | |
| 700 | 1 | |a Nybom, Inna |9 876104 | |
| 700 | 1 | |a Matsubara, Felipe |9 876105 | |
| 700 | 1 | |a Alexanderson, Helena |9 876098 | |
| 700 | 1 | |a Jakobsson, Martin |9 876099 | |
| 700 | 1 | |a Mazurov, Alexey |9 876085 | |
| 700 | 1 | |a Semiletov, Igor P. |9 812891 | |
| 700 | 1 | |a Gustafsson, Örjan |9 857156 | |
| 773 | 0 | |t Nature communications |d 2022 |g Vol. 13. P. 5057 (1-12) |x 2041-1723 | |
| 852 | 4 | |a RU-ToGU | |
| 856 | 4 | |u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996466 | |
| 856 | |y Перейти в каталог НБ ТГУ |u https://koha.lib.tsu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=996466 | ||
| 908 | |a статья | ||
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