Nitrification in the marine euphotic zone
| Project/Area Number |
26850115
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Aquatic bioproduction science
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| Research Institution | Japan Agency for Marine-Earth Science and Technology (2015-2016)
The University of Tokyo (2014) |
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Principal Investigator |
SHIOZAKI TAKUHEI 国立研究開発法人海洋研究開発機構, 地球環境観測研究開発センター, 特任研究員 (90569849)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 硝化 / 窒素循環 / 基礎生産 / 北極海 / 海氷融解 / 海洋酸性化 / アンモニア酸化 / アンモニア古細菌 / amoA遺伝子 / 新生産 / アンモニウム塩 / 脱窒菌法 / 硝酸塩取り込み速度 |
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| Outline of Final Research Achievements |
We examined nitrification in the euphotic zone, its impact on the nitrogen cycles, and the controlling factors along a 7500 km transect from the equatorial Pacific Ocean to the Arctic Ocean. Nitrification occurred in the euphotic zone at most of the stations. Especially in the subtropical oligotrophic region, it accounted for up to 87.4% (average 55.6%) of the nitrate consumed by phytoplankton. Nitrification was likely not only controlled by light environment and ammonium concentration which have already known but also by micronutrient availability.
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Report
(4 results)
Research Products
(23 results)
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[Presentation] 北太平洋の新生産における硝化の影響とアンモニア酸化細菌・古細菌の動態2015
Author(s)
塩崎拓平, 伊知地稔, 磯部一夫, 橋濱史典, 中村賢一, 江濱誠, 林崎健一, 高橋一生, 浜崎恒二, 古谷研
Organizer
日本海洋学会春季大会
Place of Presentation
東京都, 東京海洋大学
Year and Date
2015-03-21 – 2015-03-25
Related Report
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