Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water
Abstract The Changjiang River is one of the main nutrient sources in the northwestern Pacific marginal seas. However, most of the previous studies have neglected the long-range transport (>200 km) of riverine nutrients since they are rapidly consumed. In this study, we examined the long-range tra...
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Nature Portfolio
2018-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-018-31105-1 |
| _version_ | 1818345958898925568 |
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| author | Hyeong Kyu Kwon Guebuem Kim Jeomshik Hwang Weol Ae Lim Jong Woo Park Tae-Hoon Kim |
| author_facet | Hyeong Kyu Kwon Guebuem Kim Jeomshik Hwang Weol Ae Lim Jong Woo Park Tae-Hoon Kim |
| author_sort | Hyeong Kyu Kwon |
| collection | DOAJ |
| description | Abstract The Changjiang River is one of the main nutrient sources in the northwestern Pacific marginal seas. However, most of the previous studies have neglected the long-range transport (>200 km) of riverine nutrients since they are rapidly consumed. In this study, we examined the long-range transport (200–800 km) of nutrients in the surface layer during the summer of 2017. The plots of nutrients against salinity display that dissolved organic nitrogen (DON) was conservative over ~800 km, while more than 99% of the dissolved inorganic nitrogen (DIN) was removed within 200 km. As a result, in the study region, DON concentrations (avg. 7.0 ± 1.3 µM), which are minor in the river water, were much higher than DIN concentrations (avg. 0.28 ± 0.26 µM). Both nutrients, N and P, showed a similar pattern. Our results suggest that dissolved organic nutrients play a critical role on the long-range transport of riverine nutrients in surface waters and subsequent ecosystem changes. |
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| id | doaj.art-cde4b515156246e89cd66ad48e0a3b0a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-13T17:10:39Z |
| publishDate | 2018-08-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-cde4b515156246e89cd66ad48e0a3b0a2022-12-21T23:37:35ZengNature PortfolioScientific Reports2045-23222018-08-01811710.1038/s41598-018-31105-1Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted waterHyeong Kyu Kwon0Guebuem Kim1Jeomshik Hwang2Weol Ae Lim3Jong Woo Park4Tae-Hoon Kim5School of Earth and Environmental Sciences/Research Institute of Oceanography, Seoul National UniversitySchool of Earth and Environmental Sciences/Research Institute of Oceanography, Seoul National UniversitySchool of Earth and Environmental Sciences/Research Institute of Oceanography, Seoul National UniversityOcean Climate and Ecology Research Division, National Institute of Fisheries ScienceOcean Climate and Ecology Research Division, National Institute of Fisheries ScienceDepartment of Earth and Marine Sciences, Jeju National UniversityAbstract The Changjiang River is one of the main nutrient sources in the northwestern Pacific marginal seas. However, most of the previous studies have neglected the long-range transport (>200 km) of riverine nutrients since they are rapidly consumed. In this study, we examined the long-range transport (200–800 km) of nutrients in the surface layer during the summer of 2017. The plots of nutrients against salinity display that dissolved organic nitrogen (DON) was conservative over ~800 km, while more than 99% of the dissolved inorganic nitrogen (DIN) was removed within 200 km. As a result, in the study region, DON concentrations (avg. 7.0 ± 1.3 µM), which are minor in the river water, were much higher than DIN concentrations (avg. 0.28 ± 0.26 µM). Both nutrients, N and P, showed a similar pattern. Our results suggest that dissolved organic nutrients play a critical role on the long-range transport of riverine nutrients in surface waters and subsequent ecosystem changes.https://doi.org/10.1038/s41598-018-31105-1 |
| spellingShingle | Hyeong Kyu Kwon Guebuem Kim Jeomshik Hwang Weol Ae Lim Jong Woo Park Tae-Hoon Kim Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water Scientific Reports |
| title | Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water |
| title_full | Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water |
| title_fullStr | Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water |
| title_full_unstemmed | Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water |
| title_short | Significant and conservative long-range transport of dissolved organic nutrients in the Changjiang diluted water |
| title_sort | significant and conservative long range transport of dissolved organic nutrients in the changjiang diluted water |
| url | https://doi.org/10.1038/s41598-018-31105-1 |
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