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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ftunivnorthumb:oai:nrl.northumbria.ac.uk:23434 2023-05-15T14:24:59+02:00 Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks Mann, Paul Eglinton, Timothy McIntyre, Cameron Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert Spencer, Robert 2015-07-24 text https://nrl.northumbria.ac.uk/id/eprint/23434/ https://doi.org/10.1038/ncomms8856 https://nrl.northumbria.ac.uk/id/eprint/23434/1/ncomms8856.pdf en eng Macmillan Publishers Limited https://nrl.northumbria.ac.uk/id/eprint/23434/1/ncomms8856.pdf Mann, Paul, Eglinton, Timothy, McIntyre, Cameron, Zimov, Nikita, Davydova, Anna, Vonk, Jorien, Holmes, Robert and Spencer, Robert (2015) Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks. Nature Communications, 6. p. 7856. ISSN 2041-1723 cc_by_4_0 CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2015 ftunivnorthumb https://doi.org/10.1038/ncomms8856 2022-09-25T06:02:17Z 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 450,000 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 causing positive climate feedbacks in response to on-going climate change. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change kolyma river permafrost Siberia Northumbria University, Newcastle: Northumbria Research Link (NRL) Arctic Arctic Ocean Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Nature Communications 6 1 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Mann, Paul Eglinton, Timothy McIntyre, Cameron Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert Spencer, Robert Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
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 450,000 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 causing positive climate feedbacks in response to on-going climate change. |
format |
Article in Journal/Newspaper |
author |
Mann, Paul Eglinton, Timothy McIntyre, Cameron Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert Spencer, Robert |
author_facet |
Mann, Paul Eglinton, Timothy McIntyre, Cameron Zimov, Nikita Davydova, Anna Vonk, Jorien Holmes, Robert Spencer, Robert |
author_sort |
Mann, Paul |
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 |
Macmillan Publishers Limited |
publishDate |
2015 |
url |
https://nrl.northumbria.ac.uk/id/eprint/23434/ https://doi.org/10.1038/ncomms8856 https://nrl.northumbria.ac.uk/id/eprint/23434/1/ncomms8856.pdf |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) |
geographic |
Arctic Arctic Ocean Kolyma |
geographic_facet |
Arctic Arctic Ocean Kolyma |
genre |
Arctic Arctic Arctic Ocean Climate change kolyma river permafrost Siberia |
genre_facet |
Arctic Arctic Arctic Ocean Climate change kolyma river permafrost Siberia |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/23434/1/ncomms8856.pdf Mann, Paul, Eglinton, Timothy, McIntyre, Cameron, Zimov, Nikita, Davydova, Anna, Vonk, Jorien, Holmes, Robert and Spencer, Robert (2015) Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks. Nature Communications, 6. p. 7856. ISSN 2041-1723 |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/ncomms8856 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
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1766297416954281984 |