Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ...
Northern high-latitude rivers are major conduits of carbon from land to coastal seas and the Arctic Ocean. Arctic warming is promoting terrestrial permafrost thaw and shifting hydrologic flowpaths, leading to fluvial mobilization of ancient carbon stores. Here we describe 14C and 13C characteristics...
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ftdatacite:10.3929/ethz-b-000102960 2024-09-15T17:53:41+00:00 Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... Mann, Paul J. Eglinton, Timothy I. McIntyre, Cameron P. Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert M. Spencer, Robert G. M. 2015 application/pdf https://dx.doi.org/10.3929/ethz-b-000102960 http://hdl.handle.net/20.500.11850/102960 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Text Journal Article ScholarlyArticle article-journal 2015 ftdatacite https://doi.org/10.3929/ethz-b-000102960 2024-09-02T07:54:09Z Northern high-latitude rivers are major conduits of carbon from land to coastal seas and the Arctic Ocean. Arctic warming is promoting terrestrial permafrost thaw and shifting hydrologic flowpaths, leading to fluvial mobilization of ancient carbon stores. Here we describe 14C and 13C characteristics of dissolved organic carbon from fluvial networks across the Kolyma River Basin (Siberia), and isotopic changes during bioincubation experiments. Microbial communities utilized ancient carbon (11,300 to >50,000 14C years) in permafrost thaw waters and millennial-aged carbon (up to 10,000 14C years) across headwater streams. Microbial demand was supported by progressively younger (14C-enriched) carbon downstream through the network, with predominantly modern carbon pools subsidizing microorganisms in large rivers and main-stem waters. Permafrost acts as a significant and preferentially degradable source of bioavailable carbon in Arctic freshwaters, which is likely to increase as permafrost thaw intensifies ... : Nature Communications, 6 ... Text Arctic Ocean kolyma river permafrost Siberia DataCite |
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English |
description |
Northern high-latitude rivers are major conduits of carbon from land to coastal seas and the Arctic Ocean. Arctic warming is promoting terrestrial permafrost thaw and shifting hydrologic flowpaths, leading to fluvial mobilization of ancient carbon stores. Here we describe 14C and 13C characteristics of dissolved organic carbon from fluvial networks across the Kolyma River Basin (Siberia), and isotopic changes during bioincubation experiments. Microbial communities utilized ancient carbon (11,300 to >50,000 14C years) in permafrost thaw waters and millennial-aged carbon (up to 10,000 14C years) across headwater streams. Microbial demand was supported by progressively younger (14C-enriched) carbon downstream through the network, with predominantly modern carbon pools subsidizing microorganisms in large rivers and main-stem waters. Permafrost acts as a significant and preferentially degradable source of bioavailable carbon in Arctic freshwaters, which is likely to increase as permafrost thaw intensifies ... : Nature Communications, 6 ... |
format |
Text |
author |
Mann, Paul J. Eglinton, Timothy I. McIntyre, Cameron P. Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert M. Spencer, Robert G. M. |
spellingShingle |
Mann, Paul J. Eglinton, Timothy I. McIntyre, Cameron P. Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert M. Spencer, Robert G. M. Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... |
author_facet |
Mann, Paul J. Eglinton, Timothy I. McIntyre, Cameron P. Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert M. Spencer, Robert G. M. |
author_sort |
Mann, Paul J. |
title |
Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... |
title_short |
Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... |
title_full |
Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... |
title_fullStr |
Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... |
title_full_unstemmed |
Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks ... |
title_sort |
utilization of ancient permafrost carbon in headwaters of arctic fluvial networks ... |
publisher |
ETH Zurich |
publishDate |
2015 |
url |
https://dx.doi.org/10.3929/ethz-b-000102960 http://hdl.handle.net/20.500.11850/102960 |
genre |
Arctic Ocean kolyma river permafrost Siberia |
genre_facet |
Arctic Ocean kolyma river permafrost Siberia |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000102960 |
_version_ |
1810429650687492096 |