Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation
The rapid warming of the Arctic has led to permafrost degradation, accelerating the transport of terrestrial materials by rivers. The quantitative assessment of riverine nutrients and total suspended solids (TSS) flux is important to clarify the land–ocean connections in the Arctic. However, much is...
Published in: | Advances in Climate Change Research |
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KeAi Communications Co., Ltd.
2021
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Online Access: | https://doi.org/10.1016/j.accre.2021.06.002 https://doaj.org/article/7b09c41711b142babb9f7b4f058f6a76 |
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ftdoajarticles:oai:doaj.org/article:7b09c41711b142babb9f7b4f058f6a76 2023-05-15T13:03:05+02:00 Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation Shu-Min Zhang Cui-Cui Mu Zhi-Long Li Wen-Wen Dong Xing-Yu Wang Irina Streletskaya Valery Grebenets Sergey Sokratov Alexander Kizyakov Xiao-Dong Wu 2021-08-01T00:00:00Z https://doi.org/10.1016/j.accre.2021.06.002 https://doaj.org/article/7b09c41711b142babb9f7b4f058f6a76 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927821000824 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2021.06.002 https://doaj.org/article/7b09c41711b142babb9f7b4f058f6a76 Advances in Climate Change Research, Vol 12, Iss 4, Pp 466-474 (2021) Arctic rivers Carbonate Nutrients Total suspended solids Permafrost Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2021 ftdoajarticles https://doi.org/10.1016/j.accre.2021.06.002 2022-12-31T07:55:54Z The rapid warming of the Arctic has led to permafrost degradation, accelerating the transport of terrestrial materials by rivers. The quantitative assessment of riverine nutrients and total suspended solids (TSS) flux is important to clarify the land–ocean connections in the Arctic. However, much is unknown about the estimates of these components from direct measurements in the Arctic rivers and the response of the components to permafrost degradation. Here, we report the results from the Arctic Great Rivers Observatory (Arctic-GRO) for the six major Arctic rivers (Yenisey, Lena, Ob’, Mackenzie, Yukon, and Kolyma) to investigate the riverine exports of TSS, total dissolved nitrogen (TDN), nitrate (NO3−), bicarbonate (HCO3−), total dissolved phosphorus (TDP), and phosphate (PO43−). The results showed that from 2004 to 2017, the annual TSS, TDN, and NO3− exports to the Arctic Ocean were approximately 106,026 Gg, 692 Gg, and 130 Gg, respectively, and the HCO3−, TDP, and PO43− exports were approximately 79,092 Gg, 32 Gg, and 18 Gg, respectively. There were remarkable variations in component concentrations and fluxes between seasons. More than 80% of the TDN, TDP, PO43−, and TSS exports mainly occurred in spring and summer, and a high HCO3− flux was recorded in summer, while a high NO3− flux in some rivers occurred in winter. The active layer thickness was significantly positively correlated with the annual TDN, NO3−, and HCO3− exports. In addition, the HCO3− flux of the six Arctic rivers increased by 247 Gg per year during 2004–2017. The positive relationship between the active layer thickness and river discharge indicates that permafrost degradation accelerated riverine carbonate, nitrogen, and phosphorus exports. This study demonstrates that riverine exports play an important role both in the Arctic terrestrial and marine ecosystems, and permafrost degradation will likely increase the riverine material exports to the ocean. Article in Journal/Newspaper Active layer thickness Arctic Arctic Ocean permafrost Yukon Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Yukon Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Yenisey ENVELOPE(82.680,82.680,71.828,71.828) Advances in Climate Change Research 12 4 466 474 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic rivers Carbonate Nutrients Total suspended solids Permafrost Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Arctic rivers Carbonate Nutrients Total suspended solids Permafrost Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Shu-Min Zhang Cui-Cui Mu Zhi-Long Li Wen-Wen Dong Xing-Yu Wang Irina Streletskaya Valery Grebenets Sergey Sokratov Alexander Kizyakov Xiao-Dong Wu Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation |
topic_facet |
Arctic rivers Carbonate Nutrients Total suspended solids Permafrost Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
The rapid warming of the Arctic has led to permafrost degradation, accelerating the transport of terrestrial materials by rivers. The quantitative assessment of riverine nutrients and total suspended solids (TSS) flux is important to clarify the land–ocean connections in the Arctic. However, much is unknown about the estimates of these components from direct measurements in the Arctic rivers and the response of the components to permafrost degradation. Here, we report the results from the Arctic Great Rivers Observatory (Arctic-GRO) for the six major Arctic rivers (Yenisey, Lena, Ob’, Mackenzie, Yukon, and Kolyma) to investigate the riverine exports of TSS, total dissolved nitrogen (TDN), nitrate (NO3−), bicarbonate (HCO3−), total dissolved phosphorus (TDP), and phosphate (PO43−). The results showed that from 2004 to 2017, the annual TSS, TDN, and NO3− exports to the Arctic Ocean were approximately 106,026 Gg, 692 Gg, and 130 Gg, respectively, and the HCO3−, TDP, and PO43− exports were approximately 79,092 Gg, 32 Gg, and 18 Gg, respectively. There were remarkable variations in component concentrations and fluxes between seasons. More than 80% of the TDN, TDP, PO43−, and TSS exports mainly occurred in spring and summer, and a high HCO3− flux was recorded in summer, while a high NO3− flux in some rivers occurred in winter. The active layer thickness was significantly positively correlated with the annual TDN, NO3−, and HCO3− exports. In addition, the HCO3− flux of the six Arctic rivers increased by 247 Gg per year during 2004–2017. The positive relationship between the active layer thickness and river discharge indicates that permafrost degradation accelerated riverine carbonate, nitrogen, and phosphorus exports. This study demonstrates that riverine exports play an important role both in the Arctic terrestrial and marine ecosystems, and permafrost degradation will likely increase the riverine material exports to the ocean. |
format |
Article in Journal/Newspaper |
author |
Shu-Min Zhang Cui-Cui Mu Zhi-Long Li Wen-Wen Dong Xing-Yu Wang Irina Streletskaya Valery Grebenets Sergey Sokratov Alexander Kizyakov Xiao-Dong Wu |
author_facet |
Shu-Min Zhang Cui-Cui Mu Zhi-Long Li Wen-Wen Dong Xing-Yu Wang Irina Streletskaya Valery Grebenets Sergey Sokratov Alexander Kizyakov Xiao-Dong Wu |
author_sort |
Shu-Min Zhang |
title |
Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation |
title_short |
Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation |
title_full |
Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation |
title_fullStr |
Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation |
title_full_unstemmed |
Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation |
title_sort |
export of nutrients and suspended solids from major arctic rivers and their response to permafrost degradation |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.accre.2021.06.002 https://doaj.org/article/7b09c41711b142babb9f7b4f058f6a76 |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) ENVELOPE(82.680,82.680,71.828,71.828) |
geographic |
Arctic Arctic Ocean Yukon Kolyma Yenisey |
geographic_facet |
Arctic Arctic Ocean Yukon Kolyma Yenisey |
genre |
Active layer thickness Arctic Arctic Ocean permafrost Yukon |
genre_facet |
Active layer thickness Arctic Arctic Ocean permafrost Yukon |
op_source |
Advances in Climate Change Research, Vol 12, Iss 4, Pp 466-474 (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927821000824 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2021.06.002 https://doaj.org/article/7b09c41711b142babb9f7b4f058f6a76 |
op_doi |
https://doi.org/10.1016/j.accre.2021.06.002 |
container_title |
Advances in Climate Change Research |
container_volume |
12 |
container_issue |
4 |
container_start_page |
466 |
op_container_end_page |
474 |
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1766327829525430272 |