• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2010 Fiscal Year Annual Research Report

ダスト降下に伴う海洋表層生物群集の応答と気候へのフィードバック

Planned Research

Project AreaLinkages in biogeochemical cycles between surface ocean and lower atmosphere
Project/Area Number 18067008
Research InstitutionThe University of Tokyo

Principal Investigator

津田 敦  東京大学, 大気海洋研究所, 准教授 (80217314)

Co-Investigator(Kenkyū-buntansha) 道田 豊  東京大学, 大気海洋研究所, 教授 (20323628)
齊藤 宏明  (独)水産総合研究センター, 東北区水産研究所, 室長 (30371793)
高橋 一生  (独)水産総合研究センター, 東北区水産研究所, 主任研究員 (00301581)
鈴木 光次  北海道大学, 地球環境科学研究院, 准教授 (40283452)
Keywords鉄 / 窒素固定 / 亜熱帯太平洋 / ダスト / 台風 / 生態系応答
Research Abstract

本特定領域研究が主催する最後の2つの航海(KH-10-1及びKT-11-21)に乗船し、台風通過がもたらす効果を検証する、船上培養実験を、亜熱帯太平洋および、東シナ海で行った。今回の実験では、特に植物生産を支えるseed populationが亜表層からもたらされるかどうか、および、微小動物プランクトンの応答解明を目的に実験を行った。2回の実験で珪藻類を中心とする大型植物が増殖し、かつseed populationは亜表層に依存しないことが判明した。すなわち、台風通過が生物生産に及ぼす影響は、表層への栄養塩供給が主な要因と結論された。微小動物プランクトンの応答に関しては、船上でのフローサイトメトリーによる測定は困難であり、現在、検鏡によって測定中である。フローサイトメトリー測定法に関しては、濃縮操作や小口径のフローセル利用などの改善を行う予定である。
クロロフィルセンサー付きアルゴフロート観測では、2007年から観測を開始したフロートが700日以上、亜熱帯海域に滞留し、水温塩分およびクロロフィルの鉛直分布の時系列変化を得た。基本的には水深100m前後に最高値を示す亜表層クロロフィル極大型の分布が常に観測されたが、クロロフィル濃度の2峰型鉛直分布、最高値アノマリー、積算値アノマリーを検出し、台風通過との関係を解析したが、今回の観測では、台風通過が植物プランクトン生産を高めた証拠は得られなかった。今後は、台風以外の要因と検索、季節変化、地理的変化を解析するとともに、他のフロートの解析を行う。
震災の影響で3月に予定していた国際シンポジウムに参加できなくなったため、関連する発表を4月以降に繰り越して行った。

  • Research Products

    (38 results)

All 2011 2010

All Journal Article (20 results) (of which Peer Reviewed: 20 results) Presentation (16 results) Book (2 results)

  • [Journal Article] Increase of mineral dust particles in the surface waters of the northwestern North Pacific during an Asian dust event2011

    • Author(s)
      Iwamoto, Y.
    • Journal Title

      Geophysical Research Letter

      Volume: 38

    • Peer Reviewed
  • [Journal Article] Major phylogenetic groups of marine bacteria differ in growth response to natural phytoplankton blooms in the western North Pacific2011

    • Author(s)
      Tada, Y.
    • Journal Title

      Applied and Environmental Microbiology

      Volume: (In press)

    • Peer Reviewed
  • [Journal Article] Dissolved methane distribution in the South Pacific and the Southern Ocean in austral summer2011

    • Author(s)
      Yoshida, O.
    • Journal Title

      Journal of Geophysical Research

      Volume: (In press)

    • Peer Reviewed
  • [Journal Article] Importance of intracellular Fe pools on growth of marine diatoms in unialgal cultures and the Oyashio region during spring2011

    • Author(s)
      Sugie, K.
    • Journal Title

      Journal of Oceanography

      Volume: (In press)

    • Peer Reviewed
  • [Journal Article] Population dynamics of phytoplankton, heterotrophic bacteria, and viruses during the spring bloom in the western subarctic Pacific2011

    • Author(s)
      Suzuki, K.
    • Journal Title

      Deep-Sea Research Part I

      Volume: 58 Pages: 575-589

    • Peer Reviewed
  • [Journal Article] Synoptic relationships quantified between surface Chlorophyll-a and diagnostic pigments specific to phytoplankton functional types2011

    • Author(s)
      Hirata, T.
    • Journal Title

      Biogeosciences

      Volume: 118 Pages: 156-170

    • Peer Reviewed
  • [Journal Article] Oceanic iron supply mechanisms which support the spring diatom bloom in the Oyashio region, western subarctic Pacific2011

    • Author(s)
      Nishioka, J.
    • Journal Title

      Journal of Geophysical Research, Oceans

      Volume: 116

    • Peer Reviewed
  • [Journal Article] Significance of N_2 fixation in dissolved fractions of organic nitrogen2010

    • Author(s)
      Konno, U.
    • Journal Title

      Biogeosciences

      Volume: 7 Pages: 2369-2377

    • Peer Reviewed
  • [Journal Article] Response of lower trophic organisms to nutrients input and effects on carbon budget : a mesocosm experiment2010

    • Author(s)
      Tsuda, A.
    • Journal Title

      Plankton and Benthos Research

      Volume: 5 Pages: 144-155

    • Peer Reviewed
  • [Journal Article] Measurements of methyl halides in surface seawater and marine boundary layer of Northwest Pacific2010

    • Author(s)
      Ooki, A
    • Journal Title

      Journal of Geophysical Research Oceans

      Volume: 115

    • Peer Reviewed
  • [Journal Article] High-resolution measurement of multiple volatile organic compounds dissolved in seawater using equibrator inlet-proton transfer reaction-mass spectrometry (EI-PTR-MS)2010

    • Author(s)
      Kameyama, S.
    • Journal Title

      Marine Chemistry

      Volume: 122 Pages: 59-73

    • Peer Reviewed
  • [Journal Article] Temporal and spatial variations of phytoplankton photosynthetic physiology during the spring bloom in the western subarctic Pacific2010

    • Author(s)
      Yoshie, N.
    • Journal Title

      Marine Ecology Progress Series

      Volume: 399 Pages: 39-52

    • Peer Reviewed
  • [Journal Article] Primary productivity and its bio-optical modeling in the Oyashio region, NW Pacific during the spring bloom 20072010

    • Author(s)
      Isada, N.
    • Journal Title

      Deep-Sea Research Part II

      Volume: 57 Pages: 1653-1664

    • Peer Reviewed
  • [Journal Article] Fe deficiency in micro-sized diatoms in the Oyashio region of the western subarctic Pacific during spring2010

    • Author(s)
      Hattori-Saito, A.
    • Journal Title

      Journal of Oceanography

      Volume: 66 Pages: 117-132

    • Peer Reviewed
  • [Journal Article] Impacts of elevated CO_2 on organic carbon dynamics in nutrient-depleted Okhotsk Sea surface waters2010

    • Author(s)
      Yoshimura, T.
    • Journal Title

      Journal of Experimental Marine Biology and Ecology

      Volume: 395 Pages: 191-198

    • Peer Reviewed
  • [Journal Article] Linkage between ocean and air in short-lived iodocarbons and oceanic distributions of biogenic trace gases in the Western North Pacific2010

    • Author(s)
      Kurihara, M.
    • Journal Title

      Marine Chemistry

      Volume: 118 Pages: 156-170

    • Peer Reviewed
  • [Journal Article] Community compositions of Bacteria and Archaea in the Sea of Okhotsk during summer2010

    • Author(s)
      Jing, H.
    • Journal Title

      Aquatic Microbial Ecology

      Volume: 61 Pages: 179-189

    • Peer Reviewed
  • [Journal Article] Mesozooplankton selective feeding in subtropical coastal waters revealed by HPLC pigment analysis2010

    • Author(s)
      Liu, H.
    • Journal Title

      Marine Ecology Progress Series

      Volume: 407 Pages: 111-123

    • Peer Reviewed
  • [Journal Article] Application of an automatic approach to calibrate the NEMURO nutrient-hytoplankton-zooplankton food web model in the Oyashioregion2010

    • Author(s)
      Ito, S.
    • Journal Title

      Progress in Oceanography

      Volume: 87 Pages: 186-200

    • Peer Reviewed
  • [Journal Article] Horizontal transport of the calanoid copepod Neocalanus in the North Pacific : The influences of the current system and the life history2010

    • Author(s)
      Tatebe, H.
    • Journal Title

      Deep-Sea Research I

      Volume: 57 Pages: 409-419

    • Peer Reviewed
  • [Presentation] Spatial and temporal changes in the zooplankton community around the Aleutian Islands during the summer of 20092011

    • Author(s)
      Saito, R.
    • Organizer
      PICES Annual Meeting
    • Place of Presentation
      Khabarovsk, Russia
    • Year and Date
      2011-10-20
  • [Presentation] Exploring impacts of environmental history on larval growth : Combination of otolith microstructure analysis and particle-tracking experiments2011

    • Author(s)
      Ito, S.
    • Organizer
      PICES Annual Meeting
    • Place of Presentation
      Khabarovsk, Russia
    • Year and Date
      2011-10-18
  • [Presentation] Neocalanus vs.Calanus oceans. Comparative study on the life histories of Neocalanus and Calanus copepods, and their global distribution2011

    • Author(s)
      Tsuda. A.
    • Organizer
      ESSAS Open Science Meeting
    • Place of Presentation
      Seattle, USA
    • Year and Date
      2011-05-23
  • [Presentation] Comparative study of the life histories of Eucalanidae copepods in the subtropical and subarctic Pacific2011

    • Author(s)
      Tsuda. A.
    • Organizer
      ESSAS Open Science Meeting
    • Place of Presentation
      Seattle, USA
    • Year and Date
      2011-05-21
  • [Presentation] 台風通過が亜熱帯海洋の生態系構造に及ぼす影響2011

    • Author(s)
      安木奈津美
    • Organizer
      日本海洋学会2011年春季大会
    • Place of Presentation
      東大柏キャンパス・柏
    • Year and Date
      2011-03-25
  • [Presentation] Measurements of isoprene in surface seawater of the Indian and the Pacific Oceans2010

    • Author(s)
      Ooki, A.
    • Organizer
      AGU Fall Meeting 2010
    • Place of Presentation
      サンフランシスコ・米国
    • Year and Date
      2010-12-15
  • [Presentation] Western pacific Air-Sea Interaction Study (W-PASS), Introduction and highlights2010

    • Author(s)
      Tsuda, A.
    • Organizer
      AGU Fall Meeting 2010
    • Place of Presentation
      サンフランシスコ・米国
    • Year and Date
      2010-12-15
  • [Presentation] Primary production enhancement by typhoon in western North Pacific over a dacade from 1996 to 20072010

    • Author(s)
      Toratani, M.
    • Organizer
      AGU Fall Meeting 2010
    • Place of Presentation
      サンフランシスコ・米国
    • Year and Date
      2010-12-15
  • [Presentation] High-resolution measurement of DMS and volatile organic compounds dissolved in seawater using equibrator inlet-proton transfer reaction-mass spectrometry (EI-PTR-MS)2010

    • Author(s)
      Kameyama, S.
    • Organizer
      AGU Fall Meeting 2010
    • Place of Presentation
      サンフランシスコ・米国
    • Year and Date
      2010-12-15
  • [Presentation] Preliminary results of incubation experiment during KH-10-1 cruise2010

    • Author(s)
      Yasuki, N.
    • Organizer
      5^<th> ADOES Meeting
    • Place of Presentation
      JALシティホテル・長崎
    • Year and Date
      2010-12-05
  • [Presentation] プロファイリングフロートによる外洋域におけるクロロフィル濃度の観測2010

    • Author(s)
      道田豊
    • Organizer
      第22回海洋調査技術学会
    • Place of Presentation
      海上保安庁・東京
    • Year and Date
      2010-11-25
  • [Presentation] Variations of net primary productivity and phytoplankton community composition in the Southern Ocean during austral summer as estimated from ocean-color remote sensing data2010

    • Author(s)
      Takao, S.
    • Organizer
      Ocean Optics XX
    • Place of Presentation
      アンカレッジ・米国
    • Year and Date
      2010-09-28
  • [Presentation] Photosynthetic characteristics of marine aerobic anoxygenic phototrophic bacteria Roseobacter and Erythrobacter strains2010

    • Author(s)
      Sato Y.
    • Organizer
      Workshop on Aerobic Anoxygenic Phototrophs
    • Place of Presentation
      トレボーン・チェコ共和国
    • Year and Date
      2010-09-23
  • [Presentation] 生物窒素固定における溶存態の固定窒素生産2010

    • Author(s)
      今野祐多
    • Organizer
      日本海洋学会2010年度秋季大会
    • Place of Presentation
      東京農業大学・網走
    • Year and Date
      2010-09-15
  • [Presentation] Effects of increased pCO2 and iron enrichment on phytoplankton community compositions in the NW subarctic Pacific and Bering Sea2010

    • Author(s)
      Endo, H.
    • Organizer
      The VII International Symposium on Inorganic Carbon Utilization by Aquatic Photosynthetic Organisms (CCM7)
    • Place of Presentation
      淡路夢舞台国際会議場・兵庫県淡路市
    • Year and Date
      2010-08-20
  • [Presentation] Distribution and phylogenetic diversity of diazotrophs in the NW Pacific Ocean along 155°E during summer 20082010

    • Author(s)
      Y-J.Eum
    • Organizer
      Gordon Research Conferences 2010 "MarineMicrobes : From Genes to Global Cycles"
    • Place of Presentation
      ニューハンプシャー・米国
    • Year and Date
      2010-07-06
  • [Book] 環境分析ガイドブック(日本分析化学会編)2011

    • Author(s)
      鈴木光次
    • Total Pages
      563-567
    • Publisher
      丸善株式会社
  • [Book] 生物学辞典2010

    • Author(s)
      津田敦
    • Total Pages
      1615
    • Publisher
      東京化学同人

URL: 

Published: 2013-06-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi