2009 Fiscal Year Final Research Report
Iron behavior and sources regulating primary production in marginal seas (Bering Sea, Okhotsk Sea, Japan Sea)
| Project/Area Number |
18201001
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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 dynamic analysis
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| Research Institution | Hokkaido University |
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Principal Investigator |
KUMA Kenshi Hokkaido University, 大学院・水産科学研究院, 教授 (30205158)
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| Co-Investigator(Kenkyū-buntansha) |
SAITOH Seiichi 北海道大学, 大学院・水産科学研究院, 教授 (70250503)
ISODA Yutaka 北海道大学, 大学院・水産科学研究院, 准教授 (10193393)
NAGAO Seiya 金沢大学, 環日本海域環境研究センター, 教授 (20343014)
NAKATSUKA Takeshi 名古屋大学, 大学院・環境学研究科, 教授 (60242880)
SUZUKI Koji 北海道大学, 大学院・地球環境科学研究院, 准教授 (40283452)
WATANABE yutaka 北海道大学, 大学院・地球環境科学研究院, 准教授 (90333640)
NISHIOKA Jun 北海道大学, 低温科学研究所, 准教授 (90371533)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 化学海洋 / 微量金属 / 鉄 / 栄養塩 / 基礎生産 / 縁辺海 |
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| Research Abstract |
Surface mixed layer of the basin region in the Bering Sea is under a typical iron-deficient and nutrient-rich condition with low primary production because of low atmospheric iron input. However, phytoplankton bloom (Breen Belt) is observed at the shelf break region of the Southeastern Bering Sea for a long period in summer. It is suggested that the Green Belt is maintained by the supply of nutrient-rich basin water and iron-rich shelf deep water to the surface water of the shelf break. The tidal mixing in the straits of the Kuril Islands is an important role on supplying nutrient and iron to the surface water of the northwestern North Pacific Ocean and maintaining the high primary production in the Oyashio region. On the contrary, the surface mixed layer in the Japan Sea is characterized by low nutrient and high iron concentrations, resulting from high atmospheric iron input to nutrient-depleted surface water of the Japan Sea close to the Asian continent.
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Research Products
(31 results)
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[Journal Article] Processes influencing iron distributions in the coastal waters of the Tsugaru Strait2008
Author(s)
Saitoh, Y., K. Kuma, Y. Isoda, H. Kuroda, H. Matsuura, T. Wagawa, H. Takata, N. Kobayashi, S. Nagao, T. Nakatsuka
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Journal Title
Japan. J. Oceanogr. 64
Pages: 815-830
Peer Reviewed
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[Journal Article] Iron supply to the western subarctic Pacific: Importance of iron export from the Sea of Okhotsk.2007
Author(s)
Nishioka, J., T. Ono, H. Saitoh, T. Nakatsuka, S. Takeda, T. Yoshimura, K. Suzuki, K. Kuma, S. Nakabayashi, D. Tsumune, H. Mitsudera, K.W. Johnson, A. Tsuda
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Journal Title
J. Geophys. Res. 112:C10012
Pages: doi:10. 1029/2006JC004055
Peer Reviewed
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[Remarks] 久万健志,海洋における鉄の化学とその挙動,環オホーツクセミナー,2009年12月22日、北海道大学低温科学研究所(札幌)
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[Remarks] 久万健志,化学の眼で見る肥沃な海-平成21年度(第23回)北海道大学水産学部公開講座、「世界に広がる日本の水産」-平成21年度北海道大学水産学部公開講座テキスト、p. 9-13 (2009),20 09年11月7日(函館)
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[Remarks] Nishioka, J., T. Nakatsuka, K. Kuma, Y. Volkov and A. Scherbinin, Importance of tidal mixing process at Kuril strait for iron supply to western subarctic Pacific, Oyashio region. Report on Amur-Okhotsk Project No. 5, p. 11-19, September, 2008, Research Institute for Humanity and Nature.
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[Remarks] 久万健志,海洋植物プランクトン増殖と微量金属元素。話題、ぶんせき、4、p. 202-203 (2007).
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[Remarks] 久万健志,海洋における藻類増殖と金属-平成18年度北海道大学公開講座、「くらしを守る-安全と安心の科学」-平成18年度北海道大学公開講座予稿集、p. 15-20 (2006),2006年7月10日(札幌)
