Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ...
Arctic warming is causing permafrost thaw and release of organic carbon (OC) to fluvial systems. Permafrost-derived OC can be transported downstream and degraded into greenhouse gases that may enhance climate warming. Susceptibility of OC to decomposition depends largely upon its source and composit...
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ftdatacite:10.3929/ethz-b-000659602 2024-04-28T08:08:25+00:00 Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... Keskitalo, Kirsi H. Bröder, Lisa Tesi, Tommaso Mann, Paul J. Jong, Dirk J. Bulte Garcia, Sergio Davydova, Anna Davydov, Sergei Zimov, Nikita Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. 2024 application/pdf https://dx.doi.org/10.3929/ethz-b-000659602 http://hdl.handle.net/20.500.11850/659602 en eng ETH Zurich article-journal Text ScholarlyArticle Journal Article 2024 ftdatacite https://doi.org/10.3929/ethz-b-000659602 2024-04-02T12:32:08Z Arctic warming is causing permafrost thaw and release of organic carbon (OC) to fluvial systems. Permafrost-derived OC can be transported downstream and degraded into greenhouse gases that may enhance climate warming. Susceptibility of OC to decomposition depends largely upon its source and composition, which vary throughout the seasonally distinct hydrograph. Most studies on carbon dynamics to date have focused on larger Arctic rivers, yet little is known about carbon cycling in lower-order rivers and streams. Here, we characterize the composition and sources of OC, focusing on less studied particulate OC (POC), in smaller waterways within the Kolyma River watershed. Additionally, we examine how watershed characteristics control carbon concentrations. In lower-order systems, we find rapid initiation of primary production in response to warm water temperatures during spring freshet, shown by decreasing δ¹³C-POC, in contrast to larger rivers. This results in CO₂ uptake by primary producers and microbial ... : Biogeosciences, 21 (2) ... Article in Journal/Newspaper Arctic kolyma river permafrost Siberia DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
Arctic warming is causing permafrost thaw and release of organic carbon (OC) to fluvial systems. Permafrost-derived OC can be transported downstream and degraded into greenhouse gases that may enhance climate warming. Susceptibility of OC to decomposition depends largely upon its source and composition, which vary throughout the seasonally distinct hydrograph. Most studies on carbon dynamics to date have focused on larger Arctic rivers, yet little is known about carbon cycling in lower-order rivers and streams. Here, we characterize the composition and sources of OC, focusing on less studied particulate OC (POC), in smaller waterways within the Kolyma River watershed. Additionally, we examine how watershed characteristics control carbon concentrations. In lower-order systems, we find rapid initiation of primary production in response to warm water temperatures during spring freshet, shown by decreasing δ¹³C-POC, in contrast to larger rivers. This results in CO₂ uptake by primary producers and microbial ... : Biogeosciences, 21 (2) ... |
format |
Article in Journal/Newspaper |
author |
Keskitalo, Kirsi H. Bröder, Lisa Tesi, Tommaso Mann, Paul J. Jong, Dirk J. Bulte Garcia, Sergio Davydova, Anna Davydov, Sergei Zimov, Nikita Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. |
spellingShingle |
Keskitalo, Kirsi H. Bröder, Lisa Tesi, Tommaso Mann, Paul J. Jong, Dirk J. Bulte Garcia, Sergio Davydova, Anna Davydov, Sergei Zimov, Nikita Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... |
author_facet |
Keskitalo, Kirsi H. Bröder, Lisa Tesi, Tommaso Mann, Paul J. Jong, Dirk J. Bulte Garcia, Sergio Davydova, Anna Davydov, Sergei Zimov, Nikita Haghipour, Negar Eglinton, Timothy I. Vonk, Jorien E. |
author_sort |
Keskitalo, Kirsi H. |
title |
Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... |
title_short |
Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... |
title_full |
Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... |
title_fullStr |
Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... |
title_full_unstemmed |
Seasonal particulate organic carbon dynamics of the Kolyma River tributaries, Siberia ... |
title_sort |
seasonal particulate organic carbon dynamics of the kolyma river tributaries, siberia ... |
publisher |
ETH Zurich |
publishDate |
2024 |
url |
https://dx.doi.org/10.3929/ethz-b-000659602 http://hdl.handle.net/20.500.11850/659602 |
genre |
Arctic kolyma river permafrost Siberia |
genre_facet |
Arctic kolyma river permafrost Siberia |
op_doi |
https://doi.org/10.3929/ethz-b-000659602 |
_version_ |
1797577226320871424 |