2018 Fiscal Year Final Research Report
Classification of particulate organic matter based on ecological functions and enhancement of ecological modelling for management of coastal fishery production
| Project/Area Number |
16KT0143
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 特設分野 |
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| Research Field |
Food Cycle Research
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2016-07-19 – 2019-03-31
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| Keywords | 内湾生態系 / 養殖漁業 / 有機物動態 |
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| Outline of Final Research Achievements |
Based on field surveys, we clarified patterns in seasonal and spatial variations of chemical compositions (fatty acid compositions and C & N stable isotope ratios) of particulate organic matter (POM) as well as effects of offshore and river water inputs and oyster farming on POM dynamics in Shizugawa Bay. Furthermore, based on laboratory experiments, we revealed effects of environmental changes, such as nutrient inputs and temperature increase, on production and respiration of POM. Our results demonstrate that modelling POM dynamics taking account of particle size and fatty acid compositions of POM potentially enhance substantially assessments for effects of environmental changes on biogeochemical processes and fishery productions by aquacultures.
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| Free Research Field |
応用生態学，水環境工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の学術的意義としては，沿岸海域における食物網・物質循環過程において重要な位置づけにある粒状有機物の動態について，特に，そのサイズ分画や脂肪酸組成と生産・呼吸という機能的側面の関係を明らかにしたことが挙げられる．この研究において得られたそれらの成果は，特に，人為的物質負荷と水産養殖をいかに調和させるかなど，沿岸海域における環境管理・漁業管理の様々な問題を考えるうえで重要なツールとなる生態系モデルの高度化を図るうえで寄与が期待できる．
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