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Study on trophic cascade and establishment of macroalgal beds resilient to ocean warming

Research Project

Project/Area Number 26450251
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Aquatic bioproduction science
Research InstitutionFisheries Research and Education Agency

Principal Investigator

Kawmata Shigeru  国立研究開発法人水産研究・教育機構, 水産工学研究所, グループ長 (50372066)

Co-Investigator(Kenkyū-buntansha) 中村 洋平  高知大学, 教育研究部総合科学系黒潮圏科学部門, 准教授 (60530483)
Research Collaborator TAINO SEIYA  高知県水産試験場, 主任研究員
TANKA KOUKI  高知大学, 技術職員
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords栄養カスケード / 藻場 / 磯焼け / 禁漁区 / 海洋保護区 / 捕食 / イセエビ / ウニ / 乱獲 / 温暖化
Outline of Final Research Achievements

Macroalgal beds have been shifted to sea urchin-dominated barrens around the world. Numerous overseas studies have described that such phase shifts are primarily attributed to overfishing sea-urchin predators. We presented the first case study in Japan, demonstrating the importance of predator-sea urchin-macroalgae trophic cascade in maintaining macroalgal beds on Kochi coast in which marked ocean warming has occurred. Field studies in a fisheries protected area (FPA) and its adjacent control fishing area (FA) showed that, the Japanese spiny lobster was abundant and sea urchin density was reduced by its predation especially near its shelters in the FPA, while sea urchins were highly abundant due to lower predation pressure in the FA. Laboratory studies showed that predation by lobsters on sea urchins differed with size of sea urchins relative to lobsters and with urchin species. Findings of the selective predation agreed with species and size compositions of sea urchins in the field.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2017 2016 2015

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (8 results)

  • [Journal Article] Size-selective predation on the sea urchin <i>Echinometra</i> sp. A by Japanese spiny lobster <i>Panulirus japonicus</i>2016

    • Author(s)
      川俣茂、田井野清也、宮地麻央、中村洋平
    • Journal Title

      NIPPON SUISAN GAKKAISHI

      Volume: 82 Issue: 3 Pages: 306-314

    • DOI

      10.2331/suisan.15-00057

    • NAID

      130005156366

    • ISSN
      0021-5392, 1349-998X
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 藻場に関する栄養カスケード効果の事例研究:ウニの捕食者の特定とウニ2種の被食の比較2017

    • Author(s)
      川俣 茂・田中幸記
    • Organizer
      平成29年度日本水産学会春季大会
    • Place of Presentation
      東京海洋大学品川キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 藻場に関する栄養カスケード効果の事例研究:保護区と周辺漁業区の生物相2017

    • Author(s)
      川俣 茂・田中幸記・中村洋平
    • Organizer
      平成29年度日本水産学会春季大会
    • Place of Presentation
      東京海洋大学品川キャンパス
    • Related Report
      2016 Annual Research Report
  • [Presentation] ステレオカメラを用いたイセエビの頭胸甲長の予測手法2016

    • Author(s)
      川俣茂、田井野清也
    • Organizer
      日本水産学会春季大会
    • Place of Presentation
      東京海洋大学
    • Year and Date
      2016-03-29
    • Related Report
      2015 Research-status Report
  • [Presentation] 禁漁区とその周辺でのイセエビ・ウニ・海藻の栄養カスケードに関する事例研究2016

    • Author(s)
      川俣茂、田井野清也
    • Organizer
      日本水産学会春季大会
    • Place of Presentation
      東京海洋大学
    • Year and Date
      2016-03-29
    • Related Report
      2015 Research-status Report
  • [Presentation] 新たな磯焼け対策としての保護区の利用と生産力強化2015

    • Author(s)
      川俣茂
    • Organizer
      平成27年度磯焼け対策全国協議会
    • Place of Presentation
      農林水産省
    • Year and Date
      2015-11-18
    • Related Report
      2015 Research-status Report
  • [Presentation] 3Dデジタルカメラを用いたイセエビの頭胸甲長の推定法の実験的検討2015

    • Author(s)
      川俣茂、田井野清也
    • Organizer
      日本水産工学会学術講演会
    • Place of Presentation
      長崎大学文教キャンパス
    • Year and Date
      2015-05-30
    • Related Report
      2015 Research-status Report
  • [Presentation] イセエビによるツマジロナガウニの捕食に関する水槽実験2015

    • Author(s)
      川俣 茂、田井野清也、宮地麻央、中村洋平
    • Organizer
      日本水産学会
    • Place of Presentation
      東京海洋大学
    • Year and Date
      2015-03-30
    • Related Report
      2014 Research-status Report
  • [Presentation] 藻場形成における栄養カスケードの重要性:我が国初の事例研究2015

    • Author(s)
      川俣 茂、田井野清也
    • Organizer
      日本藻類学会
    • Place of Presentation
      九州大学
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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