The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ...
Global warming causes permafrost to thaw at an unprecedented rate. In Northern Scandinavia, permafrost peat plateaus have been found to decline rapidly during the last decades, releasing old organic carbon to decomposition and runoff. Thawing peat plateaus can partly turn into thermokarst ponds, wit...
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ftdatacite:10.3929/ethz-b-000542700 2024-04-28T08:32:28+00:00 The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... Kjær, Sigrid Trier Nedkvitne, Nora Westermann, Sebastian Dörsch, Peter 2022 application/pdf https://dx.doi.org/10.3929/ethz-b-000542700 http://hdl.handle.net/20.500.11850/542700 en eng ETH Zurich article-journal Conference Item Text ScholarlyArticle 2022 ftdatacite https://doi.org/10.3929/ethz-b-000542700 2024-04-02T12:34:54Z Global warming causes permafrost to thaw at an unprecedented rate. In Northern Scandinavia, permafrost peat plateaus have been found to decline rapidly during the last decades, releasing old organic carbon to decomposition and runoff. Thawing peat plateaus can partly turn into thermokarst ponds, with consequences for the biogeochemical fate of the released carbon. We investigated carbon degradation of thawing permafrost peat by incubating permafrost peat and thermokarst sediments from three peat plateaus in Northern Norway. The samples were incubated field moist at 10oC for almost one year. Initial decomposition was dominated by CO2 production which strongly responded to oxygen availability, while methane (CH4) production was small. Methane production increased drastically after more than ten months, indicating that thawed permafrost peat has a considerable potential to produce CH4 after a time lag. The cumulative CH4 production of thawed permafrost peat after one year of incubation exceeded that of ... : EGUsphere ... Text Northern Norway Peat permafrost Subarctic Thermokarst DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
Global warming causes permafrost to thaw at an unprecedented rate. In Northern Scandinavia, permafrost peat plateaus have been found to decline rapidly during the last decades, releasing old organic carbon to decomposition and runoff. Thawing peat plateaus can partly turn into thermokarst ponds, with consequences for the biogeochemical fate of the released carbon. We investigated carbon degradation of thawing permafrost peat by incubating permafrost peat and thermokarst sediments from three peat plateaus in Northern Norway. The samples were incubated field moist at 10oC for almost one year. Initial decomposition was dominated by CO2 production which strongly responded to oxygen availability, while methane (CH4) production was small. Methane production increased drastically after more than ten months, indicating that thawed permafrost peat has a considerable potential to produce CH4 after a time lag. The cumulative CH4 production of thawed permafrost peat after one year of incubation exceeded that of ... : EGUsphere ... |
format |
Text |
author |
Kjær, Sigrid Trier Nedkvitne, Nora Westermann, Sebastian Dörsch, Peter |
spellingShingle |
Kjær, Sigrid Trier Nedkvitne, Nora Westermann, Sebastian Dörsch, Peter The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... |
author_facet |
Kjær, Sigrid Trier Nedkvitne, Nora Westermann, Sebastian Dörsch, Peter |
author_sort |
Kjær, Sigrid Trier |
title |
The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... |
title_short |
The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... |
title_full |
The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... |
title_fullStr |
The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... |
title_full_unstemmed |
The long-term biogeochemical fate of C in Subarctic thawing peat plateaus ... |
title_sort |
long-term biogeochemical fate of c in subarctic thawing peat plateaus ... |
publisher |
ETH Zurich |
publishDate |
2022 |
url |
https://dx.doi.org/10.3929/ethz-b-000542700 http://hdl.handle.net/20.500.11850/542700 |
genre |
Northern Norway Peat permafrost Subarctic Thermokarst |
genre_facet |
Northern Norway Peat permafrost Subarctic Thermokarst |
op_doi |
https://doi.org/10.3929/ethz-b-000542700 |
_version_ |
1797589655888068608 |