Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands
Northern regions have received considerable attention not only because the effects of climate change are amplified at high latitudes but also because this region holds vast amounts of carbon (C) stored in permafrost. These carbon stocks are vulnerable to warming temperatures and increased permafrost...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2018
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-7745 https://doi.org/10.1038/s41598-018-27770-x |
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ftsprs:oai:DiVA.org:polar-7745 2023-05-15T17:44:41+02:00 Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands Kuhn, McKenzie Lundin, Erik J Giesler, Reiner Johansson, Margareta Karlsson, Jan 2018 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-7745 https://doi.org/10.1038/s41598-018-27770-x eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Nature Publishing Group Scientific Reports, 2018, 8, orcid:0000-0003-3871-1548 orcid:0000-0002-3785-8305 http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-7745 doi:10.1038/s41598-018-27770-x PMID 29934641 ISI:000436046500049 info:eu-repo/semantics/openAccess Environmental Sciences Miljövetenskap Article in journal info:eu-repo/semantics/article text 2018 ftsprs https://doi.org/10.1038/s41598-018-27770-x 2022-09-21T22:34:50Z Northern regions have received considerable attention not only because the effects of climate change are amplified at high latitudes but also because this region holds vast amounts of carbon (C) stored in permafrost. These carbon stocks are vulnerable to warming temperatures and increased permafrost thaw and the breakdown and release of soil C in the form of carbon dioxide (CO2) and methane (CH4). The majority of research has focused on quantifying and upscaling the effects of thaw on CO2 and CH4 emissions from terrestrial systems. However, small ponds formed in permafrost wetlands following thawing have been recognized as hotspots for C emissions. Here, we examined the importance of small ponds for C fluxes in two permafrost wetland ecosystems in northern Sweden. Detailed flux estimates of thaw ponds during the growing season show that ponds emit, on average (±SD), 279 ± 415 and 7 ± 11 mmol C m−2 d−1 of CO2 and CH4, respectively. Importantly, addition of pond emissions to the total C budget of the wetland decreases the C sink by ~39%. Our results emphasize the need for integrated research linking C cycling on land and in water in order to make correct assessments of contemporary C balances. Article in Journal/Newspaper Northern Sweden permafrost Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) Scientific Reports 8 1 |
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Open Polar |
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Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) |
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language |
English |
topic |
Environmental Sciences Miljövetenskap |
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Environmental Sciences Miljövetenskap Kuhn, McKenzie Lundin, Erik J Giesler, Reiner Johansson, Margareta Karlsson, Jan Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
topic_facet |
Environmental Sciences Miljövetenskap |
description |
Northern regions have received considerable attention not only because the effects of climate change are amplified at high latitudes but also because this region holds vast amounts of carbon (C) stored in permafrost. These carbon stocks are vulnerable to warming temperatures and increased permafrost thaw and the breakdown and release of soil C in the form of carbon dioxide (CO2) and methane (CH4). The majority of research has focused on quantifying and upscaling the effects of thaw on CO2 and CH4 emissions from terrestrial systems. However, small ponds formed in permafrost wetlands following thawing have been recognized as hotspots for C emissions. Here, we examined the importance of small ponds for C fluxes in two permafrost wetland ecosystems in northern Sweden. Detailed flux estimates of thaw ponds during the growing season show that ponds emit, on average (±SD), 279 ± 415 and 7 ± 11 mmol C m−2 d−1 of CO2 and CH4, respectively. Importantly, addition of pond emissions to the total C budget of the wetland decreases the C sink by ~39%. Our results emphasize the need for integrated research linking C cycling on land and in water in order to make correct assessments of contemporary C balances. |
format |
Article in Journal/Newspaper |
author |
Kuhn, McKenzie Lundin, Erik J Giesler, Reiner Johansson, Margareta Karlsson, Jan |
author_facet |
Kuhn, McKenzie Lundin, Erik J Giesler, Reiner Johansson, Margareta Karlsson, Jan |
author_sort |
Kuhn, McKenzie |
title |
Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
title_short |
Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
title_full |
Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
title_fullStr |
Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
title_full_unstemmed |
Emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
title_sort |
emissions from thaw ponds largely offset the carbon sink of northern permafrost wetlands |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2018 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-7745 https://doi.org/10.1038/s41598-018-27770-x |
genre |
Northern Sweden permafrost |
genre_facet |
Northern Sweden permafrost |
op_relation |
Scientific Reports, 2018, 8, orcid:0000-0003-3871-1548 orcid:0000-0002-3785-8305 http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-7745 doi:10.1038/s41598-018-27770-x PMID 29934641 ISI:000436046500049 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-018-27770-x |
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Scientific Reports |
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8 |
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1 |
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1766146963901775872 |