| Project/Area Number |
24580282
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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 | 一般 |
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| Research Field |
General fisheries
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| Research Institution | Tokyo University of Agriculture |
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Principal Investigator |
YASUTO Nishino 東京農業大学, 生物産業学部, 准教授 (50424677)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAGAWA Yoshizumi 東京農業大学, 生物産業学部, 助教 (70399111)
TANIGUCHI Akira 東京農業大学, 生物産業学部, 教授 (30002091)
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| Research Collaborator |
HAN Donfun
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 海氷 / アイスアルジー / プランクトン / クロロフィル / セディメントトラップ / 生産力 |
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| Outline of Final Research Achievements |
We conducted an investigation focus attention to fast ice in Lagoon Notoro-ko from 2013 to2015 during ice-covered season. As a result of this study, it were shown that high concentration of chlorophyll a was distributed in the water column during ice-covered season and the distribution pattern varied by a year. Although the total amount of chlorophyll a content in the sea-ice is relatively low, it is locally concentrated in and around the sea-ice. This suggests that the zone beneath the bottom layer of the sea-ice provides a suitable feeding environment for primary consumers inhabiting the water column, where ice algae is distributed in locally and densely as a food source. Namely, it was suggested that the sea ice makes primary production activate.
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