Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific
Abstract Iron (Fe) is well known as a limiting factor to control primary productivity especially in high-nutrient and low chlorophyll area such as the subarctic Pacific. The solubility of Fe is believed to be controlled by its complexation with natural organic ligands, while the distribution of orga...
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2021
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crspringernat:10.1038/s41598-021-81536-6 2023-05-15T18:27:37+02:00 Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific Kondo, Yoshiko Bamba, Rise Obata, Hajime Nishioka, Jun Takeda, Shigenobu Japan Society for the Promotion of Science 2021 http://dx.doi.org/10.1038/s41598-021-81536-6 http://www.nature.com/articles/s41598-021-81536-6.pdf http://www.nature.com/articles/s41598-021-81536-6 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 11, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2021 crspringernat https://doi.org/10.1038/s41598-021-81536-6 2022-01-14T15:43:32Z Abstract Iron (Fe) is well known as a limiting factor to control primary productivity especially in high-nutrient and low chlorophyll area such as the subarctic Pacific. The solubility of Fe is believed to be controlled by its complexation with natural organic ligands, while the distribution of organic ligands is poorly understood. Here, we report that dissolved (< 0.2 µm) organic ligands were unevenly distributed between the western and eastern stations in the subarctic Pacific. The concentration of dissolved organic ligands around the lower part of subarctic Pacific intermediate water was higher in the western station, suggesting that Fe complexation with these organic ligands supports a lateral transport within the water mass. However, a more detailed size-fractionated treatment indicated no significant difference in the soluble (< 1000 kDa) ligands’ distribution between the western and eastern stations. These results suggest that organic and inorganic colloid formations are potentially essential for Fe transport mechanisms in the subarctic Pacific. Article in Journal/Newspaper Subarctic Springer Nature (via Crossref) Pacific Scientific Reports 11 1 |
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Springer Nature (via Crossref) |
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language |
English |
topic |
Multidisciplinary |
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Multidisciplinary Kondo, Yoshiko Bamba, Rise Obata, Hajime Nishioka, Jun Takeda, Shigenobu Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific |
topic_facet |
Multidisciplinary |
description |
Abstract Iron (Fe) is well known as a limiting factor to control primary productivity especially in high-nutrient and low chlorophyll area such as the subarctic Pacific. The solubility of Fe is believed to be controlled by its complexation with natural organic ligands, while the distribution of organic ligands is poorly understood. Here, we report that dissolved (< 0.2 µm) organic ligands were unevenly distributed between the western and eastern stations in the subarctic Pacific. The concentration of dissolved organic ligands around the lower part of subarctic Pacific intermediate water was higher in the western station, suggesting that Fe complexation with these organic ligands supports a lateral transport within the water mass. However, a more detailed size-fractionated treatment indicated no significant difference in the soluble (< 1000 kDa) ligands’ distribution between the western and eastern stations. These results suggest that organic and inorganic colloid formations are potentially essential for Fe transport mechanisms in the subarctic Pacific. |
author2 |
Japan Society for the Promotion of Science |
format |
Article in Journal/Newspaper |
author |
Kondo, Yoshiko Bamba, Rise Obata, Hajime Nishioka, Jun Takeda, Shigenobu |
author_facet |
Kondo, Yoshiko Bamba, Rise Obata, Hajime Nishioka, Jun Takeda, Shigenobu |
author_sort |
Kondo, Yoshiko |
title |
Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific |
title_short |
Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific |
title_full |
Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific |
title_fullStr |
Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific |
title_full_unstemmed |
Distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic Pacific |
title_sort |
distinct profiles of size-fractionated iron-binding ligands between the eastern and western subarctic pacific |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41598-021-81536-6 http://www.nature.com/articles/s41598-021-81536-6.pdf http://www.nature.com/articles/s41598-021-81536-6 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Scientific Reports volume 11, 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/s41598-021-81536-6 |
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Scientific Reports |
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11 |
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1 |
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1766209741039599616 |