Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes
Permafrost exerts an important control over hydrological processes in Arctic landscapes and lakes. Recent warming and summer precipitation has the potential to alter water availability and quality in this environment through thermal perturbation of near surface permafrost and increased mobility of p...
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ftpubmed:oai:pubmedcentral.nih.gov:5643399 2023-05-15T14:37:42+02:00 Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes Roberts, K. E. Lamoureux, S. F. Kyser, T. K. Muir, D. C. G. Lafrenière, M. J. Iqaluk, D. Pieńkowski, A. J. Normandeau, A. 2017-10-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643399/ http://www.ncbi.nlm.nih.gov/pubmed/29038475 https://doi.org/10.1038/s41598-017-13658-9 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643399/ http://www.ncbi.nlm.nih.gov/pubmed/29038475 http://dx.doi.org/10.1038/s41598-017-13658-9 © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2017 ftpubmed https://doi.org/10.1038/s41598-017-13658-9 2017-10-22T00:16:33Z Permafrost exerts an important control over hydrological processes in Arctic landscapes and lakes. Recent warming and summer precipitation has the potential to alter water availability and quality in this environment through thermal perturbation of near surface permafrost and increased mobility of previously frozen solutes to Arctic freshwaters. We present a unique thirteen-year record (2003–16) of the physiochemical properties of two High Arctic lakes and show that the concentration of major ions, especially SO4 2−, has rapidly increased up to 500% since 2008. This hydrochemical change has occurred synchronously in both lakes and ionic ratio changes in the lakes indicate that the source for the SO4 2− is compositionally similar to terrestrial sources arising from permafrost thaw. Record summer temperatures during this period (2003–16) following over 100 years of warming and summer precipitation in this polar desert environment provide likely mechanisms for this rapid chemical change. An abrupt limnological change is also reflected in the otolith chemistry and improved relative condition of resident Arctic char (Salvelinus alpinus) and increased diatom diversity point to a positive ecosystem response during the same period. Text Arctic permafrost polar desert Salvelinus alpinus PubMed Central (PMC) Arctic Scientific Reports 7 1 |
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Article Roberts, K. E. Lamoureux, S. F. Kyser, T. K. Muir, D. C. G. Lafrenière, M. J. Iqaluk, D. Pieńkowski, A. J. Normandeau, A. Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes |
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description |
Permafrost exerts an important control over hydrological processes in Arctic landscapes and lakes. Recent warming and summer precipitation has the potential to alter water availability and quality in this environment through thermal perturbation of near surface permafrost and increased mobility of previously frozen solutes to Arctic freshwaters. We present a unique thirteen-year record (2003–16) of the physiochemical properties of two High Arctic lakes and show that the concentration of major ions, especially SO4 2−, has rapidly increased up to 500% since 2008. This hydrochemical change has occurred synchronously in both lakes and ionic ratio changes in the lakes indicate that the source for the SO4 2− is compositionally similar to terrestrial sources arising from permafrost thaw. Record summer temperatures during this period (2003–16) following over 100 years of warming and summer precipitation in this polar desert environment provide likely mechanisms for this rapid chemical change. An abrupt limnological change is also reflected in the otolith chemistry and improved relative condition of resident Arctic char (Salvelinus alpinus) and increased diatom diversity point to a positive ecosystem response during the same period. |
format |
Text |
author |
Roberts, K. E. Lamoureux, S. F. Kyser, T. K. Muir, D. C. G. Lafrenière, M. J. Iqaluk, D. Pieńkowski, A. J. Normandeau, A. |
author_facet |
Roberts, K. E. Lamoureux, S. F. Kyser, T. K. Muir, D. C. G. Lafrenière, M. J. Iqaluk, D. Pieńkowski, A. J. Normandeau, A. |
author_sort |
Roberts, K. E. |
title |
Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes |
title_short |
Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes |
title_full |
Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes |
title_fullStr |
Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes |
title_full_unstemmed |
Climate and permafrost effects on the chemistry and ecosystems of High Arctic Lakes |
title_sort |
climate and permafrost effects on the chemistry and ecosystems of high arctic lakes |
publisher |
Nature Publishing Group UK |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643399/ http://www.ncbi.nlm.nih.gov/pubmed/29038475 https://doi.org/10.1038/s41598-017-13658-9 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost polar desert Salvelinus alpinus |
genre_facet |
Arctic permafrost polar desert Salvelinus alpinus |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643399/ http://www.ncbi.nlm.nih.gov/pubmed/29038475 http://dx.doi.org/10.1038/s41598-017-13658-9 |
op_rights |
© The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-017-13658-9 |
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Scientific Reports |
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7 |
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