Factors Controlling Methane in Arctic Lakes of Southwest Greenland
We surveyed 15 lakes during the growing season of 2014 in Arctic lakes of southwest Greenland to determine which factors influence methane concentrations in these systems. Methane averaged 2.5 μmol L-1 in lakes, but varied a great deal across the landscape with lakes on older landscapes farther from...
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ftpubmed:oai:pubmedcentral.nih.gov:4959701 2023-05-15T14:50:50+02:00 Factors Controlling Methane in Arctic Lakes of Southwest Greenland Northington, Robert M. Saros, Jasmine E. 2016-07-25 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4959701/ http://www.ncbi.nlm.nih.gov/pubmed/27454863 https://doi.org/10.1371/journal.pone.0159642 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4959701/ http://www.ncbi.nlm.nih.gov/pubmed/27454863 http://dx.doi.org/10.1371/journal.pone.0159642 © 2016 Northington, Saros http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2016 ftpubmed https://doi.org/10.1371/journal.pone.0159642 2016-08-14T00:06:38Z We surveyed 15 lakes during the growing season of 2014 in Arctic lakes of southwest Greenland to determine which factors influence methane concentrations in these systems. Methane averaged 2.5 μmol L-1 in lakes, but varied a great deal across the landscape with lakes on older landscapes farther from the ice sheet margin having some of the highest values of methane reported in lakes in the northern hemisphere (125 μmol L-1). The most important factors influencing methane in Greenland lakes included ionic composition (SO4, Na, Cl) and chlorophyll a in the water column. DOC concentrations were also related to methane, but the short length of the study likely underestimated the influence and timing of DOC on methane concentrations in the region. Atmospheric methane concentrations are increasing globally, with freshwater ecosystems in northern latitudes continuing to serve as potentially large sources in the future. Much less is known about how freshwater lakes in Greenland fit in the global methane budget compared to other, more well-studied areas of the Arctic, hence our work provides essential data for a more complete view of this rapidly changing region. Text Arctic Greenland Ice Sheet PubMed Central (PMC) Arctic Greenland PLOS ONE 11 7 e0159642 |
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Research Article Northington, Robert M. Saros, Jasmine E. Factors Controlling Methane in Arctic Lakes of Southwest Greenland |
topic_facet |
Research Article |
description |
We surveyed 15 lakes during the growing season of 2014 in Arctic lakes of southwest Greenland to determine which factors influence methane concentrations in these systems. Methane averaged 2.5 μmol L-1 in lakes, but varied a great deal across the landscape with lakes on older landscapes farther from the ice sheet margin having some of the highest values of methane reported in lakes in the northern hemisphere (125 μmol L-1). The most important factors influencing methane in Greenland lakes included ionic composition (SO4, Na, Cl) and chlorophyll a in the water column. DOC concentrations were also related to methane, but the short length of the study likely underestimated the influence and timing of DOC on methane concentrations in the region. Atmospheric methane concentrations are increasing globally, with freshwater ecosystems in northern latitudes continuing to serve as potentially large sources in the future. Much less is known about how freshwater lakes in Greenland fit in the global methane budget compared to other, more well-studied areas of the Arctic, hence our work provides essential data for a more complete view of this rapidly changing region. |
format |
Text |
author |
Northington, Robert M. Saros, Jasmine E. |
author_facet |
Northington, Robert M. Saros, Jasmine E. |
author_sort |
Northington, Robert M. |
title |
Factors Controlling Methane in Arctic Lakes of Southwest Greenland |
title_short |
Factors Controlling Methane in Arctic Lakes of Southwest Greenland |
title_full |
Factors Controlling Methane in Arctic Lakes of Southwest Greenland |
title_fullStr |
Factors Controlling Methane in Arctic Lakes of Southwest Greenland |
title_full_unstemmed |
Factors Controlling Methane in Arctic Lakes of Southwest Greenland |
title_sort |
factors controlling methane in arctic lakes of southwest greenland |
publisher |
Public Library of Science |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4959701/ http://www.ncbi.nlm.nih.gov/pubmed/27454863 https://doi.org/10.1371/journal.pone.0159642 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet |
genre_facet |
Arctic Greenland Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4959701/ http://www.ncbi.nlm.nih.gov/pubmed/27454863 http://dx.doi.org/10.1371/journal.pone.0159642 |
op_rights |
© 2016 Northington, Saros http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0159642 |
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PLOS ONE |
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11 |
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7 |
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e0159642 |
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