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Estimation of past aquatic environment interms of shells in coastal zone and development of rehabilitation methods

Research Project

Project/Area Number 24656315
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Civil and environmental engineering
Research InstitutionThe University of Kitakyushu

Principal Investigator

KUSUDA Tetsuya  北九州市立大学, 国際環境工学部, 教授 (50037967)

Co-Investigator(Kenkyū-buntansha) KADOKAMI Kiwao  北九州立大学, 国際環境工学部, 教授 (60433398)
Project Period (FY) 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywords貝殻 / 水環境推定 / 成長線 / 14C / アサリ / 水温 / 日輪 / 成長速度
Research Abstract

Applicability of growth line of shells to estimate aquatic environment in terms of Ruditapes philippinarum (short neck clam) in Ariake Bay, Japan is investigated. The growth line of the shell is formed by both internal (physiological) reaction and external stresses. The distance of growth lines, that is, growth rate is shown to depend on water temperature and physical disturbance in addition to the amount of food, anoxia and exposure of harmful substances which are stated already, but not to depend on change of brightness. The shell is corroded physically and biologically by 17% per year, that is, 80% per 10 years in Ariake Bay. Therefor embedded shells in sediments are available to estimate past aquatic environment. Δ^14C is available to estimate growing its period in Ariake Bay. The proposed method is applicable to estimate physical disturbance for shells. Further research is needed for estimation of impacts by malnutrition, anoxia, etc.

Report

(2 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • Research Products

    (4 results)

All 2013 Other

All Journal Article (1 results) Presentation (3 results)

  • [Journal Article] 貝殻の成長による水環境推定に関する基礎的研究2013

    • Author(s)
      楠田哲也、壽福 聡、阿野 睦
    • Journal Title

      土木学会環境工学研究論文集

    • Related Report
      2012 Final Research Report
  • [Presentation] 貝殻成長線分析を用いた成長線の固体差の検討2013

    • Author(s)
      楠田哲也、壽福 聡、阿野 睦
    • Organizer
      日本水環境学会九州支部研究発表会
    • Place of Presentation
      北九州市立大学
    • Year and Date
      2013-03-16
    • Related Report
      2012 Final Research Report
  • [Presentation] 環境指標となる貝殻の成長線を生み出す原因の検討2013

    • Author(s)
      楠田哲也、阿野 睦
    • Organizer
      日本水環境学会研究発表会
    • Place of Presentation
      大阪工業大学
    • Year and Date
      2013-03-13
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] 貝殻成長線分析を用いた成長線の個体差の検討

    • Author(s)
      壽福 聡, 阿野 睦, 楠田哲也
    • Organizer
      日本水環境学会九州支部研究発表会
    • Place of Presentation
      北九州市立大学
    • Related Report
      2012 Annual Research Report

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Published: 2013-05-31   Modified: 2019-07-29  

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