2011 Fiscal Year Final Research Report
Effect of Benthic Microalgae on Microbial Loop in Intertidal Flat Ecosystem
| Project/Area Number |
21360249
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
NISHIMURA Osamu 東北大学, 大学院・工学研究科, 教授 (80208214)
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| Co-Investigator(Kenkyū-buntansha) |
NOMURA Munehiro 東北大学, 大学院・工学研究科, 助教 (70359537)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 底生微細藻類 / 浅海域 / 物質循環 / 安定同位体 / 脂肪酸 |
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| Research Abstract |
Laboratory incubation experiments were carried out to evaluate the effect of benthic microalgal photosynthesis on microbial loop in intertidal flat ecosystems. The results showed that the decomposition of long chain fatty acids, which are comparatively refractory components in sediment organic matter, was promoted resulting from benthic microalgal photosynthesis. Furthermore, the stable isotope ratios of not only bacterial fatty acid but also diatom fatty acid were decreased clearly. Therefore, it was considered that benthic microalgal photosynthesis enhanced detritus food chain.
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