Temperature controls organic carbon sequestration in a subarctic lake
Widespread ecological reorganizations and increases in organic carbon (OC) in lakes across the Northern Hemisphere have raised concerns about the impact of the ongoing climate warming on aquatic ecosystems and carbon cycling. We employed diverse biogeochemical techniques on a high-resolution sedimen...
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ftpubmed:oai:pubmedcentral.nih.gov:5052527 2023-05-15T17:42:33+02:00 Temperature controls organic carbon sequestration in a subarctic lake Rantala, Marttiina V. Luoto, Tomi P. Nevalainen, Liisa 2016-10-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5052527/ http://www.ncbi.nlm.nih.gov/pubmed/27708382 https://doi.org/10.1038/srep34780 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5052527/ http://www.ncbi.nlm.nih.gov/pubmed/27708382 http://dx.doi.org/10.1038/srep34780 Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep34780 2016-10-23T00:06:22Z Widespread ecological reorganizations and increases in organic carbon (OC) in lakes across the Northern Hemisphere have raised concerns about the impact of the ongoing climate warming on aquatic ecosystems and carbon cycling. We employed diverse biogeochemical techniques on a high-resolution sediment record from a subarctic lake in northern Finland (70°N) to examine the direction, magnitude and mechanism of change in aquatic carbon pools prior to and under the anthropogenic warming. Coupled variation in the elemental and isotopic composition of the sediment and a proxy-based summer air temperature reconstruction tracked changes in aquatic production, depicting a decline during a cool climate interval between ~1700–1900 C.E. and a subsequent increase over the 20th century. OC accumulation rates displayed similar coeval variation with temperature, mirroring both changes in aquatic production and terrestrial carbon export. Increase in sediment organic content over the 20th century together with high inferred aquatic UV exposure imply that the 20th century increase in OC accumulation is primarily connected to elevated lake production rather than terrestrial inputs. The changes in the supply of autochthonous energy sources were further reflected higher up the benthic food web, as evidenced by biotic stable isotopic fingerprints. Text Northern Finland Subarctic PubMed Central (PMC) Scientific Reports 6 1 |
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Article Rantala, Marttiina V. Luoto, Tomi P. Nevalainen, Liisa Temperature controls organic carbon sequestration in a subarctic lake |
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Article |
description |
Widespread ecological reorganizations and increases in organic carbon (OC) in lakes across the Northern Hemisphere have raised concerns about the impact of the ongoing climate warming on aquatic ecosystems and carbon cycling. We employed diverse biogeochemical techniques on a high-resolution sediment record from a subarctic lake in northern Finland (70°N) to examine the direction, magnitude and mechanism of change in aquatic carbon pools prior to and under the anthropogenic warming. Coupled variation in the elemental and isotopic composition of the sediment and a proxy-based summer air temperature reconstruction tracked changes in aquatic production, depicting a decline during a cool climate interval between ~1700–1900 C.E. and a subsequent increase over the 20th century. OC accumulation rates displayed similar coeval variation with temperature, mirroring both changes in aquatic production and terrestrial carbon export. Increase in sediment organic content over the 20th century together with high inferred aquatic UV exposure imply that the 20th century increase in OC accumulation is primarily connected to elevated lake production rather than terrestrial inputs. The changes in the supply of autochthonous energy sources were further reflected higher up the benthic food web, as evidenced by biotic stable isotopic fingerprints. |
format |
Text |
author |
Rantala, Marttiina V. Luoto, Tomi P. Nevalainen, Liisa |
author_facet |
Rantala, Marttiina V. Luoto, Tomi P. Nevalainen, Liisa |
author_sort |
Rantala, Marttiina V. |
title |
Temperature controls organic carbon sequestration in a subarctic lake |
title_short |
Temperature controls organic carbon sequestration in a subarctic lake |
title_full |
Temperature controls organic carbon sequestration in a subarctic lake |
title_fullStr |
Temperature controls organic carbon sequestration in a subarctic lake |
title_full_unstemmed |
Temperature controls organic carbon sequestration in a subarctic lake |
title_sort |
temperature controls organic carbon sequestration in a subarctic lake |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5052527/ http://www.ncbi.nlm.nih.gov/pubmed/27708382 https://doi.org/10.1038/srep34780 |
genre |
Northern Finland Subarctic |
genre_facet |
Northern Finland Subarctic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5052527/ http://www.ncbi.nlm.nih.gov/pubmed/27708382 http://dx.doi.org/10.1038/srep34780 |
op_rights |
Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/srep34780 |
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Scientific Reports |
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6 |
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