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Analysis of production processes of lower trophic levels in upwelling ecosystem

Research Project

Project/Area Number 60304004
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 生態学
Research InstitutionThe Japanese Red Cross College of Nursing (1986)
Chiba University (1985)

Principal Investigator

ICHIMURA Shun-ei  Professor, The Japanese Red Cross College of Nursing, 看護学部, 教授 (90015488)

Co-Investigator(Kenkyū-buntansha) HAMA Takeo  Research associate, Ocean Research Institute University of Tokyo, 水圏科学研究所, 助手 (30156385)
FURUYA Ken  Research associate, Ocean Research Institute University of Tokyo, 海洋研究所, 助手 (30143548)
SAINO Toshiro  Research associate, Ocean Research Institute, University of Tokyo, 海洋研究所, 助手 (60126068)
ISHIMARU Takashi  Research associate, Ocean Research Institute University of Tokyo, 海洋研究所, 助手 (90114371)
TAKAHASHI Masayuki  Associate professor, Department of Botany University of Tokyo, 理学部植物学教室, 助教授 (50111357)
Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1986: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1985: ¥2,800,000 (Direct Cost: ¥2,800,000)
Keywordsupwelling / ecosystem / lower trophic level organisms / phytoplankton / zooplankton / product / 増殖
Research Abstract

Research has been focussed on the propagation responses of lower trophic level organisms, particularly phyto- and zoo-plankton, to rapid and drastic changes in the environment in a given water mass of regional upwelling having small areal and short temporal scales such as a few kilometers at the sea surface and a few days to one week of temporal scale. Experimental setups of a surface monitoring system and OCTOPUS have been developed, and remote sensing technique from space and XBT were also introduced for the research. Since geophysical treatment was unavoidable for the research of regional upwelling, participation of US geophysicists were invited by the financial supports of "The Japan-US Cooperative Science Program" of the Japan Society for the Promotion of Science and the National Science Foundation in USA. Field experiments were carried out in the area of Izu Islands using R. V. Tansei-Maru of Ocean Research Institute, University of Tokyo, and "Tsukuba" of Marine Research Center o … More f University of Tsukuba. Major attention was given to the detection of a given upwelled water mass, and to follow the temporal changes of various biological processes in and out of the upwelled water mass. Results obtained are as follows. Water mass of 30 to 100m in depth was generally upwelled to the surface in the study area. Phytoplankton propagation was activated within a few days after upwelling, and phytoplankton biomass increased exponentially with time. Growth stimulation occurred in all the groups of phytoplankton, and a few species of diatom were particularly enhanced greatly. Photosynthetic products of phytoplankton in newly upwelled water mass was rich in proteins, which resulted in an enlargement of phytoplankton population size. In older upwelled water mass, on the other hand, photosynthetic products were mainly composed of energy sources such as sugars, which resulted in maintaining the existing population rather than size expansion. Similar growth stimulation in upwelled water mass also observed in zooplankton population in which females extensively increased egg production rate with the increase of phytoplankton biomass. Less

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Ishimaru,T.: Journal of the oceanographical Society of Japan. 40. 207-212 (1884)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 石坂丞二: 沿岸海洋研究ノート. 21. 148-155 (1984)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Minagawa,M.: Geochimica Cosmochimica Acta. 48. 1135-1140 (1984)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takahashi,M.: Journal of the oceanographical Society of Japan. 40. 221-229 (1984)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 和田英太郎: Res.Org.Geochem.33. 621-630 (1984)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Ishimaru,T.: Journal of Plankton Research. 7. 679-689 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 石丸隆: 微生物の生態. 13. 35-45 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Kanda,J.: Journal of the oceanographical Society of Japan. 41. 373-380 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Kishino,M.: Bulletin of Marine Science. 37. 634-642 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Mizutani,H.: Viva Orgino. 13. 25-49 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 杉本隆成: 海洋科学. 17. 421-425 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Otobe,H.: Journal of the oceanographical Society of Japan. 41. 299-306 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Furuya,K.: Deep-Sea Research. 33. 621-630 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Furuya,K.: Journal of experimental marine Biology and Ecology. 96. 43-55 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Ishizaka,J.: Journal of Plankton Research. 8. 169-181 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 高橋正征: 沿岸海洋研究ノート. 23. 166-167 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takahashi,M.: Journal of Plankton Research. 8. 1039-1049 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 和田英太郎: Redioisotopes. 35. 136-146 (1886)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Tsuji,T.: Marine Biology. 93. 343-349 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Atkinson,L.P.: Journal of the Oceanographical Society of Japan.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takahashi,M.;L.P.Atkinson ed.: "Studies on Regional Upwellings in the Izu Island Area,Cruise Report Seris,No.1" Ecology Laboratory,Department of Botany University of Tokyo, 89 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-31   Modified: 2016-04-21  

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