Characteristic feature of ocean acidification in coastal area and its effect on microalgae
| Project/Area Number |
24241010
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | University of Tsukuba |
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Principal Investigator |
HAMA Takeo 筑波大学, 生命環境系, 教授 (30156385)
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| Co-Investigator(Kenkyū-buntansha) |
SASANO Daisuke 気象庁気象研究所, 海洋・地球化学部, 研究員 (10462524)
NAKAYAMA Takeshi 筑波大学, 生命環境系, 准教授 (40302369)
WADA Shigeki 筑波大学, 生命環境系, 助教 (60512720)
OMORI Yuko 筑波大学, 生命環境系, 助教 (80613497)
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| Research Collaborator |
ISHII Masao
KOSUGI Naohiro
INOUE Tomoki
SUZUKI Risa
KASHIWAZAKI Hiroto
MATSUSHITA Wakana
SUGA Yuri
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥33,670,000 (Direct Cost: ¥25,900,000、Indirect Cost: ¥7,770,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2013: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2012: ¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
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| Keywords | 海洋酸性化 / 炭酸系 / 沿岸域 / 微細藻類 / 炭素循環 / 微細藻類組成 / サイズ組成 / 光合成生産 / 光合成生産量 |
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| Outline of Final Research Achievements |
Various parameters concerning geochemical cycle of carbon such as carbonate system have been observed at coastal station off Shimoda, Shizuoka, Japan for 4 years. Partial pressure of carbon dioxide in the surface layer increased form Oct ot Mar, and decresed from Apr to Sep. Seasonal changes in concentration of organic carbon and photosynthetic production rate indicates that microbial metabolism including microalgae and vertical mixing of water masses are the most important factors causing the seasonal variation of pCO2. The magunitude of seasonal variation in the coastal water was revealed to be higher than those in open ocean by 2 to 3 times, due to high abundance of microbial biomass. Microalgal culture experiments revealed that Chrysochromulina sp. (Haptophyceae) is sensitive to the decrease in pH, indicating the growth of C. sp. will decrease in the acidified condition.
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Report
(5 results)
Research Products
(17 results)
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[Presentation] SEASONAL CYCLE OF CARBONATE SYSTEM AND CONTLOLLING FACTORS OFF THE COAST OF SHIMODA IN JAPAN2014
Author(s)
Matsushita, W., Wada, S., Ishii, M., Sasano, D., Kosugi, N. and Hama, T.
Organizer
Ocean Sciences Meeting
Place of Presentation
University of Hawaii, USA
Related Report
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