Conservative behavior of dissolved black carbon in the northwestern Pacific marginal seas.
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| Main Authors: | , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
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Nature communications
2025
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| _version_ | 1868266117077663745 |
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| author | Park, Jihyun Renken, Marit Waska, Hannelore Dittmar, Thorsten Han, Heejun Seo, Hojong Han, In-Seong Lee, Joon-Soo Kim, Guebuem |
| author_facet | Park, Jihyun Renken, Marit Waska, Hannelore Dittmar, Thorsten Han, Heejun Seo, Hojong Han, In-Seong Lee, Joon-Soo Kim, Guebuem Park, Jihyun Renken, Marit Waska, Hannelore Dittmar, Thorsten Han, Heejun Seo, Hojong Han, In-Seong Lee, Joon-Soo Kim, Guebuem |
| collection | PubMed - marine biology |
| contents | Conservative behavior of dissolved black carbon in the northwestern Pacific marginal seas. Park, Jihyun Renken, Marit Waska, Hannelore Dittmar, Thorsten Han, Heejun Seo, Hojong Han, In-Seong Lee, Joon-Soo Kim, Guebuem Dissolved black carbon (DBC) represents the largest molecularly identifiable slow-cycling organic carbon pool in the ocean. However, its behavior remains debated due to large differences between its radiocarbon ages and residence times based on mass balance estimations, suggesting considerable removal in the source regions. Here, we show that DBC is predominantly derived from riverine sources and behaves conservatively throughout the entire water masses of the northwestern Pacific marginal seas-including the East China Sea, the Yellow Sea, and the East Sea (Japan Sea)-which are characterized by extreme biogeochemical alterations and long water residence times (~100 years). This conservative behavior is evidenced by a strong negative correlation between DBC and salinity, consistent mass balance estimates, and a uniform B6CA/B5CA marker ratio. Thus, we suggest that the discrepancy between DBC ages and residence times in the ocean is more likely due to substantially enhanced contemporary DBC production rather than removal pathways. |
| format | Artículo científico |
| id | pubmed_41326364 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Nature communications |
| record_format | pubmed |
| spellingShingle | Conservative behavior of dissolved black carbon in the northwestern Pacific marginal seas. Park, Jihyun Renken, Marit Waska, Hannelore Dittmar, Thorsten Han, Heejun Seo, Hojong Han, In-Seong Lee, Joon-Soo Kim, Guebuem Conservative behavior of dissolved black carbon in the northwestern Pacific marginal seas. Park, Jihyun Renken, Marit Waska, Hannelore Dittmar, Thorsten Han, Heejun Seo, Hojong Han, In-Seong Lee, Joon-Soo Kim, Guebuem Dissolved black carbon (DBC) represents the largest molecularly identifiable slow-cycling organic carbon pool in the ocean. However, its behavior remains debated due to large differences between its radiocarbon ages and residence times based on mass balance estimations, suggesting considerable removal in the source regions. Here, we show that DBC is predominantly derived from riverine sources and behaves conservatively throughout the entire water masses of the northwestern Pacific marginal seas-including the East China Sea, the Yellow Sea, and the East Sea (Japan Sea)-which are characterized by extreme biogeochemical alterations and long water residence times (~100 years). This conservative behavior is evidenced by a strong negative correlation between DBC and salinity, consistent mass balance estimates, and a uniform B6CA/B5CA marker ratio. Thus, we suggest that the discrepancy between DBC ages and residence times in the ocean is more likely due to substantially enhanced contemporary DBC production rather than removal pathways. |
| title | Conservative behavior of dissolved black carbon in the northwestern Pacific marginal seas. |
| url | https://pubmed.ncbi.nlm.nih.gov/41326364/ |