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Evaluation of the mechanisms underlying carbon cycles mediated by microbial food web networks in meso- and bathypelagic layers of the oceans

Research Project

Project/Area Number 24241003
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionThe University of Tokyo

Principal Investigator

NAGATA Toshi  東京大学, 大気海洋研究所, 教授 (40183892)

Co-Investigator(Kenkyū-buntansha) YOKOKAWA Taichi  愛媛大学, 沿岸環境科学研究センター, 講師 (00402751)
FUKUDA Hideki  東京大学, 大気海洋研究所, 所教 (30451892)
HASUMI Hiroyasu  東京大学, 大気海洋研究所, 教授 (40311641)
OGAWA Hiroshi  東京大学, 大気海洋研究所, 准教授 (50260518)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥45,240,000 (Direct Cost: ¥34,800,000、Indirect Cost: ¥10,440,000)
Fiscal Year 2014: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2013: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2012: ¥26,130,000 (Direct Cost: ¥20,100,000、Indirect Cost: ¥6,030,000)
Keywords海洋生態系 / 中深層 / 微生物食物網 / 炭素循環 / 原核生物 / 原生生物 / ウィルス / 海洋生態系モデリング / 海洋 / 炭素鉛直輸送
Outline of Final Research Achievements

This project conducted an interdisciplinary study combining field observations and modelling in order to explore previously overlooked mechanisms by which carbon cycles are controlled by microbial foodweb networks in meso-and bathypelagic environments of the oceans. It was revealed that microbial food web structure systematically changes over the depth. Furthermore, quantitative estimates of material fluxes driven by microbial interactions were provided by a means of the sensitivity analysis using a three-dimentional general circulation model combined with a biogeochmical model that explicitly resolved microbial interactions.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (26 results)

All 2015 2014 2013 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results,  Acknowledgement Compliant: 4 results) Presentation (17 results) (of which Invited: 2 results) Remarks (3 results)

  • [Journal Article] Influence of nitrogen substrates and substrate C:N ratios on the nitrogen isotopic composition of amino acids from the marine bacterium Vibrio harveyi2014

    • Author(s)
      Maki, K., N. Ohkouchi, Y. Chikaraishi, H. Fukuda, T. Miyajima, and T. Nagata
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 140 Pages: 521-530

    • DOI

      10.1016/j.gca.2014.05.052

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Modelling the global cycle of marine dissolved organic matter and its influence on marine productivity2014

    • Author(s)
      Hasumi, Y. and T. Nagata
    • Journal Title

      Ecological Modelling

      Volume: 288 Pages: 9-24

    • DOI

      10.1016/j.ecolmodel.2014.05.009

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Large-scale distribution of viruses in deep waters of the Pacific and Souther Oceans2014

    • Author(s)
      Yang, Y., Yokokawa, T., Motegi, C., and Nagata, T.
    • Journal Title

      Aquatic Microbial Ecology

      Volume: 71 Pages: 193-202

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Effects of attached bacteria on organic aggregate settling velocity in seawater.2013

    • Author(s)
      Yamada, Y., Fukuda, H., Inoue, K., Kogure, K., and Nagata, T.
    • Journal Title

      Aquatic Microbial Ecology

      Volume: 70 Issue: 3 Pages: 261-272

    • DOI

      10.3354/ame01658

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Large-scale geographical variation in prokaryote abundance and production in meso- and bathypelagic zones of the central Pacific and Southern Oceawn2013

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

      Limnology and Oceanography

      Volume: 58 Issue: 1 Pages: 61-73

    • DOI

      10.4319/lo.2013.58.1.0061

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vertical distribution of prokaryote production and abundance in the mesopelagic and bathypelagic layers of the Canada Basin, western Arctic:Implications for the mode and extent of organic carbon delivery.2013

    • Author(s)
      Uchimiya M., H. Fukuda, S. Nishino, T. Kikuchi, H. Ogawa, T. Nagata.
    • Journal Title

      Deep-Sea Research Part I

      Volume: 71 Pages: 103-112

    • DOI

      10.1016/j.dsr.2012.10.001

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] Spatiotemporal dynamics of planktonic archaea in the western North Pacific Ocean2015

    • Author(s)
      Kaneko, R., S. Suzuki, T. Nagata, M. Honda and K. Hamasaki
    • Organizer
      ASLO 2015 Aquatic Sciences Meeting
    • Place of Presentation
      Granada, Spain
    • Year and Date
      2015-02-23
    • Related Report
      2014 Annual Research Report
  • [Presentation] Bacterial enhancement of microgel coagulation in seawater2015

    • Author(s)
      Yamada, Y., H. Fukuda, Y. Tada, K. Kogure, T. Nagata
    • Organizer
      ASLO 2015 Aquatic Sciences Meeting
    • Place of Presentation
      Granada, Spain
    • Year and Date
      2015-02-23
    • Related Report
      2014 Annual Research Report
  • [Presentation] Atmospheric forcing resulted in enhanced microbial production in the water column of the Chukchi Shelf, western Arctic, in early autumn2014

    • Author(s)
      Uchimiya M., Motegi C., Kawaguchi Y., Inoue J., Nishino S., Ogawa H., Nagata T
    • Organizer
      IMBER Open Science Conference
    • Place of Presentation
      Bergen, Norway
    • Year and Date
      2014-06-25
    • Related Report
      2014 Annual Research Report
  • [Presentation] 西部北極海における微生物群集・有機物の空間変動およびその支配機構2014

    • Author(s)
      内宮 万里央・茂手木 千晶・山田 洋輔・楊 燕輝・福田 秀樹・永田 俊
    • Organizer
      2013年度日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学、東京都
    • Year and Date
      2014-03-30
    • Related Report
      2013 Annual Research Report
  • [Presentation] 微生物の物質循環への役割2014

    • Author(s)
      内宮 万里央・永田 俊
    • Organizer
      2013年度日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学、東京都
    • Year and Date
      2014-03-30
    • Related Report
      2013 Annual Research Report
  • [Presentation] Temporal variability in heterotrophic prokaryote production in the dark ocean2014

    • Author(s)
      Uchimiya M., Fukuda H., Ogawa H, Wakita M., Honda, M, Nagata T.
    • Organizer
      2014 ASLO Ocean Sciences Meeting
    • Place of Presentation
      Honolulu, U.S.A
    • Year and Date
      2014-02-28
    • Related Report
      2013 Annual Research Report
  • [Presentation] 細菌による大型有機凝集物 (マリンスノー) の形成促進要因2013

    • Author(s)
      山田 洋輔・福田 秀樹・永田 俊
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      北海道大学学術交流会館、札幌市
    • Year and Date
      2013-09-20
    • Related Report
      2013 Annual Research Report
  • [Presentation] Embedding microbial foodwebs into ocean biogeochemical models: challenges towards a global synthesis2013

    • Author(s)
      T. Nagata
    • Organizer
      EMBO Conference on Aquatic Microbial Ecology: SAME13
    • Place of Presentation
      Stresa, Italy
    • Year and Date
      2013-09-09
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Embedding microbial food webs to ocean biogeochemical models: a global synthesis

    • Author(s)
      Nagata, T.
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      滋賀県立びわ湖ホール  滋賀県
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Viral gradient along the meridional overturning circulation.

    • Author(s)
      Yang, Y.
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      滋賀県立びわ湖ホール 滋賀県
    • Related Report
      2012 Annual Research Report
  • [Presentation] Attached bacteria reduce settling velocity of organic aggregates in seawater

    • Author(s)
      Yamada, Y
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      滋賀県立びわ湖ホール 滋賀県
    • Related Report
      2012 Annual Research Report
  • [Presentation] Viral hot spot in the upper layer of the western North Pacific

    • Author(s)
      Motegi, C
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      滋賀県立びわ湖ホール 滋賀県
    • Related Report
      2012 Annual Research Report
  • [Presentation] Large-scale geographical variation in prokaryotic abundance and production in meso-and bathypelagic zones of the central Pacific and the Southern Ocean

    • Author(s)
      Yokokawa, T.
    • Organizer
      2012 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      滋賀県立びわ湖ホール 滋賀県
    • Related Report
      2012 Annual Research Report
  • [Presentation] Low production and low turnover of heterotrophic microbes in the deep water of the Canada Basin, western Arctic

    • Author(s)
      Ucihmiya, M.
    • Organizer
      2013 ASLO Aquatic Sciences Meeting
    • Place of Presentation
      New Orleans, U.S.A.
    • Related Report
      2012 Annual Research Report
  • [Presentation] 北極海における微生物の生産

    • Author(s)
      永田俊
    • Organizer
      2013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 東京
    • Related Report
      2012 Annual Research Report
  • [Presentation] 西部北太平洋亜寒帯・亜熱帯海域中深層における原核生物生産速度および生物量の季節変動

    • Author(s)
      内宮万里央
    • Organizer
      2013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 東京
    • Related Report
      2012 Annual Research Report
  • [Presentation] 西部北極海中深層における原核生物生産速度の全深度分布:有機炭素供給パターンとその強度の評価

    • Author(s)
      内宮万里央
    • Organizer
      2013年度日本海洋学会春季大会一般講演
    • Place of Presentation
      東京海洋大学品川キャンパス 東京
    • Related Report
      2012 Annual Research Report
  • [Remarks] 全深度微生物分布データベース(FddMAP)

    • URL

      http://157.82.133.122/~database/FddMAP/FddMAP_JP.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] 全深度微生物分布データベース(FddMAP)

    • URL

      http://157.82.133.112/~database/FddMAP/FddMAP_JP.html

    • Related Report
      2013 Annual Research Report
  • [Remarks] 生元素動態研究室

    • URL

      http://co.aori.u-tokyo.ac.jp/mbcg/j/members/nagata/

    • Related Report
      2012 Annual Research Report

URL: 

Published: 2013-05-15   Modified: 2019-07-29  

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