Groundwater as a major source of dissolved organic matter to Arctic coastal waters
Abstract Groundwater is projected to become an increasing source of freshwater and nutrients to the Arctic Ocean as permafrost thaws, yet few studies have quantified groundwater inputs to Arctic coastal waters under contemporary conditions. New measurements along the Alaska Beaufort Sea coast show t...
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Online Access: | http://dx.doi.org/10.1038/s41467-020-15250-8 http://www.nature.com/articles/s41467-020-15250-8.pdf http://www.nature.com/articles/s41467-020-15250-8 |
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crspringernat:10.1038/s41467-020-15250-8 2023-05-15T14:42:13+02:00 Groundwater as a major source of dissolved organic matter to Arctic coastal waters Connolly, Craig T. Cardenas, M. Bayani Burkart, Greta A. Spencer, Robert G. M. McClelland, James W. National Science Foundation 2020 http://dx.doi.org/10.1038/s41467-020-15250-8 http://www.nature.com/articles/s41467-020-15250-8.pdf http://www.nature.com/articles/s41467-020-15250-8 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 11, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2020 crspringernat https://doi.org/10.1038/s41467-020-15250-8 2022-01-04T15:45:52Z Abstract Groundwater is projected to become an increasing source of freshwater and nutrients to the Arctic Ocean as permafrost thaws, yet few studies have quantified groundwater inputs to Arctic coastal waters under contemporary conditions. New measurements along the Alaska Beaufort Sea coast show that dissolved organic carbon and nitrogen (DOC and DON) concentrations in supra-permafrost groundwater (SPGW) near the land-sea interface are up to two orders of magnitude higher than in rivers. This dissolved organic matter (DOM) is sourced from readily leachable organic matter in surface soils and deeper centuries-to millennia-old soils that extend into thawing permafrost. SPGW delivers approximately 400–2100 m 3 of freshwater, 14–71 kg of DOC, and 1–4 kg of DON to the coastal ocean per km of shoreline per day during late summer. These substantial fluxes are expected to increase as massive stocks of frozen organic matter in permafrost are liberated in a warming Arctic. Article in Journal/Newspaper Arctic Arctic Ocean Beaufort Sea permafrost Alaska Springer Nature (via Crossref) Arctic Arctic Ocean Nature Communications 11 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Connolly, Craig T. Cardenas, M. Bayani Burkart, Greta A. Spencer, Robert G. M. McClelland, James W. Groundwater as a major source of dissolved organic matter to Arctic coastal waters |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract Groundwater is projected to become an increasing source of freshwater and nutrients to the Arctic Ocean as permafrost thaws, yet few studies have quantified groundwater inputs to Arctic coastal waters under contemporary conditions. New measurements along the Alaska Beaufort Sea coast show that dissolved organic carbon and nitrogen (DOC and DON) concentrations in supra-permafrost groundwater (SPGW) near the land-sea interface are up to two orders of magnitude higher than in rivers. This dissolved organic matter (DOM) is sourced from readily leachable organic matter in surface soils and deeper centuries-to millennia-old soils that extend into thawing permafrost. SPGW delivers approximately 400–2100 m 3 of freshwater, 14–71 kg of DOC, and 1–4 kg of DON to the coastal ocean per km of shoreline per day during late summer. These substantial fluxes are expected to increase as massive stocks of frozen organic matter in permafrost are liberated in a warming Arctic. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Connolly, Craig T. Cardenas, M. Bayani Burkart, Greta A. Spencer, Robert G. M. McClelland, James W. |
author_facet |
Connolly, Craig T. Cardenas, M. Bayani Burkart, Greta A. Spencer, Robert G. M. McClelland, James W. |
author_sort |
Connolly, Craig T. |
title |
Groundwater as a major source of dissolved organic matter to Arctic coastal waters |
title_short |
Groundwater as a major source of dissolved organic matter to Arctic coastal waters |
title_full |
Groundwater as a major source of dissolved organic matter to Arctic coastal waters |
title_fullStr |
Groundwater as a major source of dissolved organic matter to Arctic coastal waters |
title_full_unstemmed |
Groundwater as a major source of dissolved organic matter to Arctic coastal waters |
title_sort |
groundwater as a major source of dissolved organic matter to arctic coastal waters |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41467-020-15250-8 http://www.nature.com/articles/s41467-020-15250-8.pdf http://www.nature.com/articles/s41467-020-15250-8 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Beaufort Sea permafrost Alaska |
genre_facet |
Arctic Arctic Ocean Beaufort Sea permafrost Alaska |
op_source |
Nature Communications volume 11, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-15250-8 |
container_title |
Nature Communications |
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11 |
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1 |
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1766313913417203712 |