Revealing biogeochemical signatures of Arctic landscapes with river chemistry
Abstract Riverine fluxes of carbon and inorganic nutrients are increasing in virtually all large permafrost-affected rivers, indicating major shifts in Arctic landscapes. However, it is currently difficult to identify what is causing these changes in nutrient processing and flux because most long-te...
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Online Access: | http://dx.doi.org/10.1038/s41598-019-49296-6 http://www.nature.com/articles/s41598-019-49296-6.pdf http://www.nature.com/articles/s41598-019-49296-6 |
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crspringernat:10.1038/s41598-019-49296-6 2023-05-15T14:33:52+02:00 Revealing biogeochemical signatures of Arctic landscapes with river chemistry Shogren, Arial J. Zarnetske, Jay P. Abbott, Benjamin W. Iannucci, Frances Frei, Rebecca J. Griffin, Natasha A. Bowden, William B. National Science Foundation 2019 http://dx.doi.org/10.1038/s41598-019-49296-6 http://www.nature.com/articles/s41598-019-49296-6.pdf http://www.nature.com/articles/s41598-019-49296-6 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 9, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2019 crspringernat https://doi.org/10.1038/s41598-019-49296-6 2022-01-04T09:10:10Z Abstract Riverine fluxes of carbon and inorganic nutrients are increasing in virtually all large permafrost-affected rivers, indicating major shifts in Arctic landscapes. However, it is currently difficult to identify what is causing these changes in nutrient processing and flux because most long-term records of Arctic river chemistry are from small, headwater catchments draining <200 km 2 or from large rivers draining >100,000 km 2 . The interactions of nutrient sources and sinks across these scales are what ultimately control solute flux to the Arctic Ocean. In this context, we performed spatially-distributed sampling of 120 subcatchments nested within three Arctic watersheds spanning alpine, tundra, and glacial-lake landscapes in Alaska. We found that the dominant spatial scales controlling organic carbon and major nutrient concentrations was 3–30 km 2 , indicating a continuum of diffuse and discrete sourcing and processing dynamics. These patterns were consistent seasonally, suggesting that relatively fine-scale landscape patches drive solute generation in this region of the Arctic. These network-scale empirical frameworks could guide and benchmark future Earth system models seeking to represent lateral and longitudinal solute transport in rapidly changing Arctic landscapes. Article in Journal/Newspaper Arctic Arctic Ocean permafrost Tundra Alaska Springer Nature (via Crossref) Arctic Arctic Ocean Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Scientific Reports 9 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
Multidisciplinary |
spellingShingle |
Multidisciplinary Shogren, Arial J. Zarnetske, Jay P. Abbott, Benjamin W. Iannucci, Frances Frei, Rebecca J. Griffin, Natasha A. Bowden, William B. Revealing biogeochemical signatures of Arctic landscapes with river chemistry |
topic_facet |
Multidisciplinary |
description |
Abstract Riverine fluxes of carbon and inorganic nutrients are increasing in virtually all large permafrost-affected rivers, indicating major shifts in Arctic landscapes. However, it is currently difficult to identify what is causing these changes in nutrient processing and flux because most long-term records of Arctic river chemistry are from small, headwater catchments draining <200 km 2 or from large rivers draining >100,000 km 2 . The interactions of nutrient sources and sinks across these scales are what ultimately control solute flux to the Arctic Ocean. In this context, we performed spatially-distributed sampling of 120 subcatchments nested within three Arctic watersheds spanning alpine, tundra, and glacial-lake landscapes in Alaska. We found that the dominant spatial scales controlling organic carbon and major nutrient concentrations was 3–30 km 2 , indicating a continuum of diffuse and discrete sourcing and processing dynamics. These patterns were consistent seasonally, suggesting that relatively fine-scale landscape patches drive solute generation in this region of the Arctic. These network-scale empirical frameworks could guide and benchmark future Earth system models seeking to represent lateral and longitudinal solute transport in rapidly changing Arctic landscapes. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Shogren, Arial J. Zarnetske, Jay P. Abbott, Benjamin W. Iannucci, Frances Frei, Rebecca J. Griffin, Natasha A. Bowden, William B. |
author_facet |
Shogren, Arial J. Zarnetske, Jay P. Abbott, Benjamin W. Iannucci, Frances Frei, Rebecca J. Griffin, Natasha A. Bowden, William B. |
author_sort |
Shogren, Arial J. |
title |
Revealing biogeochemical signatures of Arctic landscapes with river chemistry |
title_short |
Revealing biogeochemical signatures of Arctic landscapes with river chemistry |
title_full |
Revealing biogeochemical signatures of Arctic landscapes with river chemistry |
title_fullStr |
Revealing biogeochemical signatures of Arctic landscapes with river chemistry |
title_full_unstemmed |
Revealing biogeochemical signatures of Arctic landscapes with river chemistry |
title_sort |
revealing biogeochemical signatures of arctic landscapes with river chemistry |
publisher |
Springer Science and Business Media LLC |
publishDate |
2019 |
url |
http://dx.doi.org/10.1038/s41598-019-49296-6 http://www.nature.com/articles/s41598-019-49296-6.pdf http://www.nature.com/articles/s41598-019-49296-6 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Arctic Arctic Ocean Glacial Lake |
geographic_facet |
Arctic Arctic Ocean Glacial Lake |
genre |
Arctic Arctic Ocean permafrost Tundra Alaska |
genre_facet |
Arctic Arctic Ocean permafrost Tundra Alaska |
op_source |
Scientific Reports volume 9, issue 1 ISSN 2045-2322 |
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/s41598-019-49296-6 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
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1766307040300367872 |