Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming
Peatlands in continuous permafrost regions represent a globally-important store of organic carbon, the stability of which is thought to be at risk under future climatic warming. To better understand how these ecosystems may change in a warmer future, we use a palaeoenvironmental approach to reconstr...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://pure.qub.ac.uk/en/publications/67c34103-3e59-4949-8e89-a942162f5af4 https://doi.org/10.1016/j.quascirev.2019.02.001 http://www.scopus.com/inward/record.url?scp=85061434260&partnerID=8YFLogxK |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/67c34103-3e59-4949-8e89-a942162f5af4 2024-01-28T10:03:42+01:00 Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming Taylor, Liam S. Swindles, Graeme T. Morris, Paul J. Gałka, Mariusz Green, Sophie M. 2019-03-01 https://pure.qub.ac.uk/en/publications/67c34103-3e59-4949-8e89-a942162f5af4 https://doi.org/10.1016/j.quascirev.2019.02.001 http://www.scopus.com/inward/record.url?scp=85061434260&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Taylor , L S , Swindles , G T , Morris , P J , Gałka , M & Green , S M 2019 , ' Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming ' , Quaternary Science Reviews , vol. 207 , pp. 134-144 . https://doi.org/10.1016/j.quascirev.2019.02.001 Arctic Climate change Holocene Hydrology Reconstruction Testate amoebae /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action article 2019 ftqueensubelpubl https://doi.org/10.1016/j.quascirev.2019.02.001 2024-01-04T23:21:47Z Peatlands in continuous permafrost regions represent a globally-important store of organic carbon, the stability of which is thought to be at risk under future climatic warming. To better understand how these ecosystems may change in a warmer future, we use a palaeoenvironmental approach to reconstruct changes in two peatlands near Toolik Lake on Alaska's North Slope (TFS1 and TFS2). We present the first testate amoeba-based reconstructions from peatlands in continuous permafrost, which we use to infer changes in water-table depth and porewater electrical conductivity during the past two millennia. TFS1 likely initiated during a warm period between 0 and 300 CE. Throughout the late-Holocene, both peatlands were minerotrophic fens with low carbon accumulation rates (means of 18.4 and 14.2 g C m −2 yr −1 for cores TFS1 and TFS2 respectively). However, since the end of the Little Ice Age, both fens have undergone a rapid transition towards oligotrophic peatlands, with deeper water tables and increased carbon accumulation rates (means of 59.5 and 48.2 g C m −2 yr −1 for TFS1 and TFS2 respectively). We identify that recent warming has led to these two Alaskan rich fens to transition into poor fens, with greatly enhanced carbon accumulation rates. Our work demonstrates that some Arctic peatlands may become more productive with future regional warming, subsequently increasing their ability to sequester carbon. Article in Journal/Newspaper Arctic Climate change Ice permafrost Queen's University Belfast Research Portal Arctic Quaternary Science Reviews 207 134 144 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Arctic Climate change Holocene Hydrology Reconstruction Testate amoebae /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action |
spellingShingle |
Arctic Climate change Holocene Hydrology Reconstruction Testate amoebae /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action Taylor, Liam S. Swindles, Graeme T. Morris, Paul J. Gałka, Mariusz Green, Sophie M. Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming |
topic_facet |
Arctic Climate change Holocene Hydrology Reconstruction Testate amoebae /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action |
description |
Peatlands in continuous permafrost regions represent a globally-important store of organic carbon, the stability of which is thought to be at risk under future climatic warming. To better understand how these ecosystems may change in a warmer future, we use a palaeoenvironmental approach to reconstruct changes in two peatlands near Toolik Lake on Alaska's North Slope (TFS1 and TFS2). We present the first testate amoeba-based reconstructions from peatlands in continuous permafrost, which we use to infer changes in water-table depth and porewater electrical conductivity during the past two millennia. TFS1 likely initiated during a warm period between 0 and 300 CE. Throughout the late-Holocene, both peatlands were minerotrophic fens with low carbon accumulation rates (means of 18.4 and 14.2 g C m −2 yr −1 for cores TFS1 and TFS2 respectively). However, since the end of the Little Ice Age, both fens have undergone a rapid transition towards oligotrophic peatlands, with deeper water tables and increased carbon accumulation rates (means of 59.5 and 48.2 g C m −2 yr −1 for TFS1 and TFS2 respectively). We identify that recent warming has led to these two Alaskan rich fens to transition into poor fens, with greatly enhanced carbon accumulation rates. Our work demonstrates that some Arctic peatlands may become more productive with future regional warming, subsequently increasing their ability to sequester carbon. |
format |
Article in Journal/Newspaper |
author |
Taylor, Liam S. Swindles, Graeme T. Morris, Paul J. Gałka, Mariusz Green, Sophie M. |
author_facet |
Taylor, Liam S. Swindles, Graeme T. Morris, Paul J. Gałka, Mariusz Green, Sophie M. |
author_sort |
Taylor, Liam S. |
title |
Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming |
title_short |
Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming |
title_full |
Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming |
title_fullStr |
Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming |
title_full_unstemmed |
Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming |
title_sort |
evidence for ecosystem state shifts in alaskan continuous permafrost peatlands in response to recent warming |
publishDate |
2019 |
url |
https://pure.qub.ac.uk/en/publications/67c34103-3e59-4949-8e89-a942162f5af4 https://doi.org/10.1016/j.quascirev.2019.02.001 http://www.scopus.com/inward/record.url?scp=85061434260&partnerID=8YFLogxK |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Ice permafrost |
genre_facet |
Arctic Climate change Ice permafrost |
op_source |
Taylor , L S , Swindles , G T , Morris , P J , Gałka , M & Green , S M 2019 , ' Evidence for ecosystem state shifts in Alaskan continuous permafrost peatlands in response to recent warming ' , Quaternary Science Reviews , vol. 207 , pp. 134-144 . https://doi.org/10.1016/j.quascirev.2019.02.001 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.02.001 |
container_title |
Quaternary Science Reviews |
container_volume |
207 |
container_start_page |
134 |
op_container_end_page |
144 |
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1789329136219586560 |