2017 Fiscal Year Final Research Report
Development of quantification method of buried carbon derived from seaweed using fatty acid biomarker
| Project/Area Number |
16K14328
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
野村 宗弘 東北大学, 工学研究科, 助教 (70359537)
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| Research Collaborator |
MARUO Chikako 東北大学, 工学部・工学研究科技術部, 主任
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | ブルーカーボン |
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| Outline of Final Research Achievements |
It is unclear how much marine plant-derived organic carbon remains in the actual waters after thousands of years. In this study, fatty acids in the core sample of sediments of Lake Ogawara was analyzed for the purpose of estimating the residual ratio of higher plant-derived organic carbon. LCFAs, biomarker fatty acids of plants, were detected in the sedimentary layer about 9000 years ago. In addition, carbon isotopic ratio of fatty acid C26:0 was used to separate organic carbon into marine and terrestrial origins. Here, the terrestrial and marine plants were represented by Manchurian wild rice and eelgrass, respectively. As a result, the estimated residual organic carbon content of the marine plant was close to the estimated residual rate of 40% in the previous study. This result suggests that carbon stable isotopic analysis of fatty acids in sediments can reveal buried carbon content from seaweed.
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| Free Research Field |
環境生態工学
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