Variability of the nutrient stream near Kuroshio's origin
The Kuroshio—literally “the Black Stream”—is the most substantial current in the Pacific Ocean. It was called the Black Stream because this oligotrophic current is so nutrient-poor in its euphotic zone that the water appears black without the influence of phytoplankton and the associated, often colo...
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ftpubmed:oai:pubmedcentral.nih.gov:7930021 2023-05-15T18:28:28+02:00 Variability of the nutrient stream near Kuroshio's origin Chen, Chen-Tung Arthur Huang, Ting-Hsuan Wu, Chi-Hsuan Yang, Haiyan Guo, Xinyu 2021-03-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930021/ https://doi.org/10.1038/s41598-021-84420-5 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930021/ http://dx.doi.org/10.1038/s41598-021-84420-5 © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2021 ftpubmed https://doi.org/10.1038/s41598-021-84420-5 2021-03-07T02:38:17Z The Kuroshio—literally “the Black Stream”—is the most substantial current in the Pacific Ocean. It was called the Black Stream because this oligotrophic current is so nutrient-poor in its euphotic zone that the water appears black without the influence of phytoplankton and the associated, often colored dissolved organic matter. Yet, below the euphotic layer, nutrient concentrations increase with depth while current speed declines. Consequently, a core of maximum nutrient flux, the so-called nutrient stream, develops at a depth of roughly between 200 and 800 m. This poorly studied nutrient stream transports nutrients to and supports high productivity and fisheries on the East China Sea continental shelf; it also transports nutrients to and promotes increased productivity and fisheries in the Kuroshio Extension and the subarctic Pacific Ocean. Three modes of the Kuroshio nutrient stream are detected off SE Taiwan for the first time: one has a single-core; one has two cores that are apparently separated by the ridge at 120.6–122° E, and one has two cores that are separated by a southward flow above the ridge. More importantly, northward nutrient transports seem to have been increasing since 2015 as a result of a 30% increase in subsurface water transport, which began in 2013. Such a nutrient stream supports the Kuroshio's high productivity, such as on the East China Sea continental shelf and in the Kuroshio Extension SE of Japan. Text Subarctic PubMed Central (PMC) Pacific Scientific Reports 11 1 |
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Article Chen, Chen-Tung Arthur Huang, Ting-Hsuan Wu, Chi-Hsuan Yang, Haiyan Guo, Xinyu Variability of the nutrient stream near Kuroshio's origin |
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The Kuroshio—literally “the Black Stream”—is the most substantial current in the Pacific Ocean. It was called the Black Stream because this oligotrophic current is so nutrient-poor in its euphotic zone that the water appears black without the influence of phytoplankton and the associated, often colored dissolved organic matter. Yet, below the euphotic layer, nutrient concentrations increase with depth while current speed declines. Consequently, a core of maximum nutrient flux, the so-called nutrient stream, develops at a depth of roughly between 200 and 800 m. This poorly studied nutrient stream transports nutrients to and supports high productivity and fisheries on the East China Sea continental shelf; it also transports nutrients to and promotes increased productivity and fisheries in the Kuroshio Extension and the subarctic Pacific Ocean. Three modes of the Kuroshio nutrient stream are detected off SE Taiwan for the first time: one has a single-core; one has two cores that are apparently separated by the ridge at 120.6–122° E, and one has two cores that are separated by a southward flow above the ridge. More importantly, northward nutrient transports seem to have been increasing since 2015 as a result of a 30% increase in subsurface water transport, which began in 2013. Such a nutrient stream supports the Kuroshio's high productivity, such as on the East China Sea continental shelf and in the Kuroshio Extension SE of Japan. |
format |
Text |
author |
Chen, Chen-Tung Arthur Huang, Ting-Hsuan Wu, Chi-Hsuan Yang, Haiyan Guo, Xinyu |
author_facet |
Chen, Chen-Tung Arthur Huang, Ting-Hsuan Wu, Chi-Hsuan Yang, Haiyan Guo, Xinyu |
author_sort |
Chen, Chen-Tung Arthur |
title |
Variability of the nutrient stream near Kuroshio's origin |
title_short |
Variability of the nutrient stream near Kuroshio's origin |
title_full |
Variability of the nutrient stream near Kuroshio's origin |
title_fullStr |
Variability of the nutrient stream near Kuroshio's origin |
title_full_unstemmed |
Variability of the nutrient stream near Kuroshio's origin |
title_sort |
variability of the nutrient stream near kuroshio's origin |
publisher |
Nature Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930021/ https://doi.org/10.1038/s41598-021-84420-5 |
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Pacific |
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Pacific |
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Subarctic |
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Subarctic |
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Sci Rep |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930021/ http://dx.doi.org/10.1038/s41598-021-84420-5 |
op_rights |
© The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
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https://doi.org/10.1038/s41598-021-84420-5 |
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