Flocculated meltwater particles control Arctic land-sea fluxes of labile iron
Glacial meltwater systems supply the Arctic coastal ocean with large volumes of sediment and potentially bioavailable forms of iron, nitrogen and carbon. The particulate fraction of this supply is significant but estuarine losses have been thought to limit the iron supply from land. Here, our result...
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ftpubmed:oai:pubmedcentral.nih.gov:4822144 2023-05-15T14:47:50+02:00 Flocculated meltwater particles control Arctic land-sea fluxes of labile iron Markussen, Thor Nygaard Elberling, Bo Winter, Christian Andersen, Thorbjørn Joest 2016-04-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4822144/ http://www.ncbi.nlm.nih.gov/pubmed/27050673 https://doi.org/10.1038/srep24033 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4822144/ http://www.ncbi.nlm.nih.gov/pubmed/27050673 http://dx.doi.org/10.1038/srep24033 Copyright © 2016, Macmillan Publishers Limited 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/srep24033 2016-04-24T00:07:40Z Glacial meltwater systems supply the Arctic coastal ocean with large volumes of sediment and potentially bioavailable forms of iron, nitrogen and carbon. The particulate fraction of this supply is significant but estuarine losses have been thought to limit the iron supply from land. Here, our results reveal how flocculation (particle aggregation) involving labile iron may increase horizontal transport rather than enhance deposition close to the source. This is shown by combining field observations in Disko Fjord, West Greenland, and laboratory experiments. Our data show how labile iron affects floc sizes, shapes and densities and consequently yields low settling velocities and extended sediment plumes. We highlight the importance of understanding the flocculation mechanisms when examining fluxes of meltwater transported iron in polar regions today and in the future, and we underline the influence of terrestrial hotspots on the nutrient and solute cycles in Arctic coastal waters. Text Arctic Greenland PubMed Central (PMC) Arctic Greenland Scientific Reports 6 1 |
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Article Markussen, Thor Nygaard Elberling, Bo Winter, Christian Andersen, Thorbjørn Joest Flocculated meltwater particles control Arctic land-sea fluxes of labile iron |
topic_facet |
Article |
description |
Glacial meltwater systems supply the Arctic coastal ocean with large volumes of sediment and potentially bioavailable forms of iron, nitrogen and carbon. The particulate fraction of this supply is significant but estuarine losses have been thought to limit the iron supply from land. Here, our results reveal how flocculation (particle aggregation) involving labile iron may increase horizontal transport rather than enhance deposition close to the source. This is shown by combining field observations in Disko Fjord, West Greenland, and laboratory experiments. Our data show how labile iron affects floc sizes, shapes and densities and consequently yields low settling velocities and extended sediment plumes. We highlight the importance of understanding the flocculation mechanisms when examining fluxes of meltwater transported iron in polar regions today and in the future, and we underline the influence of terrestrial hotspots on the nutrient and solute cycles in Arctic coastal waters. |
format |
Text |
author |
Markussen, Thor Nygaard Elberling, Bo Winter, Christian Andersen, Thorbjørn Joest |
author_facet |
Markussen, Thor Nygaard Elberling, Bo Winter, Christian Andersen, Thorbjørn Joest |
author_sort |
Markussen, Thor Nygaard |
title |
Flocculated meltwater particles control Arctic land-sea fluxes of labile iron |
title_short |
Flocculated meltwater particles control Arctic land-sea fluxes of labile iron |
title_full |
Flocculated meltwater particles control Arctic land-sea fluxes of labile iron |
title_fullStr |
Flocculated meltwater particles control Arctic land-sea fluxes of labile iron |
title_full_unstemmed |
Flocculated meltwater particles control Arctic land-sea fluxes of labile iron |
title_sort |
flocculated meltwater particles control arctic land-sea fluxes of labile iron |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4822144/ http://www.ncbi.nlm.nih.gov/pubmed/27050673 https://doi.org/10.1038/srep24033 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland |
genre_facet |
Arctic Greenland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4822144/ http://www.ncbi.nlm.nih.gov/pubmed/27050673 http://dx.doi.org/10.1038/srep24033 |
op_rights |
Copyright © 2016, Macmillan Publishers Limited 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/srep24033 |
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Scientific Reports |
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6 |
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