Coupling of silicon and carbon biogeochemical cycles in the surface ocean

• Project/Area Number: 20310006
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Nagasaki University (2009-2011); The University of Tokyo (2008)
• Principal Investigator: TAKEDA Shigenobu 長崎大学, 大学院・水産・環境科学総合研究科, 教授 (20334328)
• Co-Investigator(Kenkyū-buntansha): OBATA Hajime 東京大学, 大気海洋研究所, 准教授 (90334309)
• Project Period (FY): 2008 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000); Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2010: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2009: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2008: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
• Keywords: 海洋科学 / 海洋生態 / 地球化学 / 環境変動 / 炭素循環 / 生物ケイ酸 / 珪藻 / 植物プランクトン

Research Abstract

Coupling of silicon dynamics and carbon biogeochemical cycles in the euphotic zone was studied in the western subarctic Pacific Ocean and the East China Sea. Productions of particulate organic carbon and biogenic silica by phytoplankton assemblage and their export to the subsurface layers were affected by availabilities of trace elements such as iron and zinc. Characteristic of dominant diatom species was another important factor that controls balance between carbon and silicon fluxes in the euphotic zone.

Research Products

• [Journal Article] Iron and phytoplankton growth in the subarctic North Pacific (2011)
  • Author(s): Takeda, S.
  • Journal Title: Aqua-BioScience Monographs Volume: vol.4 Pages: 41-93
  • Peer Reviewed
• [Journal Article] Unique amnesic shellfish toxin composition found in the South East Asian diatom Nitzschia navis-varingica (2011)
  • Author(s): Romero, M.L.J.
  • Journal Title: Harmful Algae Volume: VOL.10 Issue: 5 Pages: 456-462
  • DOI: 10.1016/j.hal.2011.02.006
  • Peer Reviewed
• [Journal Article] Occurrence of rain-origin nitrate patches at the nutrient-depleted surface in the East China Sea and the Philippine Sea during summer (2011)
  • Author(s): Kodama, T., et al
  • Journal Title: Journal of Geophysical Research Volume: 116 Issue: C8 Pages: 1-14
  • DOI: 10.1029/2010jc006814
  • Peer Reviewed
• [Journal Article] Lagrangian observation of phytoplankton dynamics at an artificially enriched subsurface water in Sagami Bay (2010)
  • Author(s): Masuda, T., K. Furuya, N. Kohashi, M. Sato, S. Takeda, M. Uchiyama, N. Horimoto, T. Ishimaru
  • Journal Title: Japan. Journal of Oceanography Volume: vol.66 Pages: 801-813
  • Peer Reviewed
• [Journal Article] Lagrangian observation of phytoplankton dynamics at an artificially enriched subsurface water in Sagami Bay, Japan. (2010)
  • Author(s): Masuda, T., K.Furuya, N.Kohashi, M.Sato, S.Takeda, M.Uchiyama, N.Horimoto, T.Ishimaru
  • Journal Title: Journal of Oceanography vol.66 Pages: 801-813
  • NAID: 10029034413
  • Peer Reviewed
• [Journal Article] Lagrangian observation of phytoplankton dynamics at an artificially enriched subsurface water in Sagami Bay, Japan (2010)
  • Author(s): Masuda, T.
  • Journal Title: Journal of Oceanography Volume: 66 Pages: 801-813
  • Peer Reviewed
• [Journal Article] Response of lower trophic organisms to nutrient input and effects on carbon budget : a mesocosm experiment (2010)
  • Author(s): Tsuda, A.
  • Journal Title: Plankton & Benthos Research Volume: 5 Pages: 144-155
  • Peer Reviewed
• [Journal Article] Microbial carbon isotope fractionation to produce extraordinarily heavy methane in aging hydrothermal plumes over the southwestern Okinawa Trough (2010)
  • Author(s): Gamo, T.
  • Journal Title: Geochemical Journal Volume: 44 Pages: 477-487
  • Peer Reviewed
• [Journal Article] Biogeochemical cycling of N and Si during the mesoscale iron-enrichment experiment in the western subarctic Pacific(SEEDS-II) (2009)
  • Author(s): Saito, H., A. Tsuda, Y. Nojiri, T. Aramaki, H. Ogawa, T. Yoshimura, K. Imai, I. Kudo, J. Nishioka, T. Ono, K. Suzuki, S. Takeda
  • Journal Title: Deep-Sea Research-II Volume: vol.56 Pages: 2852-2862
  • Peer Reviewed
• [Journal Article] Biogeochemical cycling of N and Si during the mesoscale iron-enrichment experiment in the western subarctic Pacific(SEEDS-II). (2009)
  • Author(s): Saito,H., A.Tsuda, Y.Nojiri, T.Aramaki, H.Ogawa, T.Yoshimura, K.Imai, I.Kudo, J.Nishioka, T.Ono, K.Suzuki, S.Takeda
  • Journal Title: Deep-Sea Research-II vol.56 Pages: 2852-2862
  • Peer Reviewed
• [Journal Article] Biogeochemical cycling of N and Si during the mesoscale iron-enrichment experiment in the western subarctic Pacific(SEEDS-II) (2009)
  • Author(s): Saito, H.
  • Journal Title: Deep-Sea Research-11 56 Pages: 2852-2862
  • Peer Reviewed
• [Journal Article] 熱帯・亜熱帯貧栄養海域における新生産の評価 (2009)
  • Author(s): 塩崎拓平
  • Journal Title: 海の研究 18 Pages: 213-242
  • Peer Reviewed
• [Journal Article] Influence of non-photosynthetic pigments on light absorption and quantum yield of photosynthesis in the western equatorial Pacific and the subarctic North Pacific (2009)
  • Author(s): Vijayan A.K.
  • Journal Title: Journal, of Oceanography 65 Pages: 245-258
  • Peer Reviewed
• [Journal Article] ^<13>C,^<15>Nトレーサー法を用いた生物生産測定 (2009)
  • Author(s): 塩崎拓平
  • Journal Title: 月刊海洋 41 Pages: 213-220
• [Presentation] 夏季の東シナ海済州島南方海域における表層の栄養塩動態 (2012)
  • Author(s): 武田重信、江藤祐輔、迎雄一
  • Organizer: 2012年度日本海洋学会春季大会
  • Place of Presentation: 筑波大学
  • Year and Date: 2012-03-29
• [Presentation] 夏季の東シナ海済州島南方海域における表層の栄養塩動態 (2012)
  • Author(s): 武田重信
  • Organizer: 2011年度日本海洋学会春季大会
  • Place of Presentation: 筑波大学(茨城県)
  • Year and Date: 2012-03-29
• [Presentation] Determination of picomolar level of zinc species in seawater using cathodic stripping voltammetry (2012)
  • Author(s): 金泰辰
  • Organizer: 東京大学大気海洋研究所共同利用研究集会「白鳳丸クリーン観測による微量元素・同位体研究の現状と展望」
  • Place of Presentation: 東京大学大気海洋研究所(千葉県)
  • Year and Date: 2012-03-09
• [Presentation] Organic complexation of iron in the Pacific Ocean (2012)
  • Author(s): Takeda, S.
  • Organizer: 2012 Ocean Sciences Meeting
  • Place of Presentation: Salt Palace Convention Center(米国)
  • Year and Date: 2012-02-23
• [Presentation] カソーディックストリッピングボルタンメトリー法を用いた海水中の亜鉛の分析 (2011)
  • Author(s): 金泰辰
  • Organizer: 2011年度日本地球化学会第58回年会
  • Place of Presentation: 北海道大学(北海道)
  • Year and Date: 2011-09-15
• [Presentation] 大気海洋間相互作用における海洋生態系動態 (2011)
  • Author(s): 武田重信
  • Organizer: 東京大学大気海洋研究所共同利用研究集会「大気・海洋間の生物地球化学的循環過程のリンケージ」
  • Place of Presentation: 北海道大学(北海道)
  • Year and Date: 2011-09-13
• [Presentation] 夏季東シナ海済州島南方海域における表層水中のケイ素の動態と基礎生産 (2011)
  • Author(s): 武田重信
  • Organizer: 名古屋大学地球水循環研究センター共同利用研究集会「東シナ海陸棚域の鉛直過程と基礎生産」
  • Place of Presentation: 名古屋大学地球水循環研究センター(愛知県)
  • Year and Date: 2011-06-02
• [Presentation] 夏季東シナ海済州島南方海域における表層水中のケイ素の動態と一次生産 (2011)
  • Author(s): 武田重信、吉国翔一、岡村和麿、迎雄一
  • Organizer: 2011年度日本海洋学会春季大会
  • Place of Presentation: 東京大学柏キャンパス
• [Presentation] ケイ素安定同位体^<30> Siを用いた生物ケイ酸の生産・溶解速度の測定 (2010)
  • Author(s): 武田重信、丸川真悟、小畑元、田副博文、小埜恒夫
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2010-03-27
• [Presentation] ケイ素安定同位体Si^<30>を用いた生物ケイ酸の生産・溶解速度の測定 (2010)
  • Author(s): 武田重信、丸川真悟、小畑元、田副博文、小埜恒夫
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2010-03-27
• [Presentation] ケイ素安定同位体^<30>Siを用いた生物ケイ酸の生産・溶解速度の測定 (2010)
  • Author(s): 武田重信
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2010-03-27
• [Presentation] 春季黒潮続流域の基礎生産力 (2010)
  • Author(s): 西部悠太
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2010-03-27
• [Presentation] 亜熱帯海域における新生産研究の現状と課題 (2010)
  • Author(s): 塩崎拓平
  • Organizer: 2010年度日本海洋学会春季大会シンポジウム
  • Place of Presentation: 東京海洋大学品川キャンパス
  • Year and Date: 2010-03-26
• [Presentation] 西部北太平洋亜寒帯域における微量金属元素の分布とスペシエーション (2009)
  • Author(s): 柴田直弥、大久保綾子、小畑元、蒲生俊敬、西岡純、武田重信、児玉武稔、谷田巌、鈴木光次
  • Organizer: 東京大学海洋研究所共同利用シンポジウム白鳳丸航海KH-08-2データシンセシス
  • Place of Presentation: 東京大学海洋研究所
  • Year and Date: 2009-12-11
• [Presentation] 西部北太平洋亜寒帯域における微量金属元素の分布とスペシエーション (2009)
  • Author(s): 柴田直弥
  • Organizer: 東京大学海洋研究所共同利用シンポジウム 白鳳丸航海KH-08-2データシンセシス
  • Place of Presentation: 東京大学海洋研究所
  • Year and Date: 2009-12-11
• [Presentation] Anthropogenic Perturbations of Riverine Nutrient Inputs and its Imp acts on Phytoplankton Assemblage in Hamana Bay, Japan (2008)
  • Author(s): Takeda, S.
  • Organizer: The 5th World Fisheries Congress
  • Place of Presentation: パシフィコ横浜会議センター
  • Year and Date: 2008-10-22
• [Presentation] ^<13>C,^<15>Nトレーサー法を用いた生物生産測定 (2008)
  • Author(s): 塩崎拓平
  • Organizer: 平成20年度東京大学海洋研究所国際沿岸海洋研究センター共同利用研究集会
  • Place of Presentation: 東京大学海洋研究所国際沿岸海洋研究センター
  • Year and Date: 2008-08-22