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Spatio-temporal dynamics of coral community based on the analysis of long-term monitoring data

Research Project

Project/Area Number 16K07506
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ecology/Environment
Research InstitutionNagasaki University

Principal Investigator

TAKEGAKI (MUKO) Soyoka  長崎大学, 水産・環境科学総合研究科(水産), 客員研究員 (30546106)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords時空間動態 / 中長期モニタリング / サンゴ群集 / クラスター解析 / 復元力 / 加入 / 撹乱 / 回復 / 個体群 / 長期データ / モニタリング / 群集 / 個体群動態
Outline of Final Research Achievements

Long-term monitoring data, including Monitoring site 1000, Conservation monitoring for the coral reefs in the Sekisei Lagoon, Fixed point observation in Nagasaki, were analyzed in this study. Categorical clustering analysis for coral cover collected at 196 research sites suggested that 60 research sites, mostly located in the middle and south Sekisei Lagoon, showed the sharp decline of coral cover in 2007 when a severe bleaching event occurred and unrecovered thereafter. In contrast, the research sites located in the northern Sekisei Lagoon had large recruitment of Acropora juveniles and resulted in the successful recovery of coral cover subsequently after the large-scale disturbances.
The research sites in the Honshu and Kyushu Islands exhibited less-changed coral cover and low Acropora recruits than those in the Ryukyu Islands. Acropora solitaryensis, which was a dominant species in the temperate areas, showed low mortality rate and growth rate.

Academic Significance and Societal Importance of the Research Achievements

わが国最大のサンゴ礁海域である石西礁湖は、1983年から定点観測が行われている世界的にも貴重な海域である。本研究では、複数のモニタリングデータを包括的に解析し、石西礁湖北部はサンゴの回復力が常に高い一方で、中南部は2007年のサンゴ白化以降サンゴの回復力が低いなど、地域ごとの特徴を明らかにした。今後のサンゴ群集の回復予測や、再生事業について重要な知見を与えることができた。また、サンゴの分布拡大が見られている九州や本州では、沖縄諸島と比べるとサンゴ群集の動態は比較的安定していることが示唆された。暖温帯域では大きな撹乱がない限りサンゴ群集は維持されると予想され、今後の沿岸生態系の変化が懸念される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Transitions in coral communities over 17 years in the Sekisei Lagoon and adjacent reef areas in Okinawa, Japan2019

    • Author(s)
      Muko S, Suzuki G, Saito M, Nakamura T, Nadaoka K
    • Journal Title

      Ecological Research

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Critical Information Gaps Impeding Understanding of the Role of Larval Connectivity Among Coral Reef Islands in an Era of Global Change2018

    • Author(s)
      Edmunds PJ、 McIlroy SE、Adjeroud M、Ang Put、Bergman JL、Carpenter RC、Coffroth A、Fujimura A、Hench JL、Holbrook SJ、Leichter JJ、Muko S、Nakajima Y、Nakamura M、Paris CB、Schmitt RJ.、Sutthacheep M、Toonen RJ、Sakai K、Suzuki G、Washburn L、Wyatt ASJ、Mitarai S
    • Journal Title

      Frontiers in Marine Science

      Volume: 5 Pages: 290-290

    • DOI

      10.3389/fmars.2018.00290

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] モニタリングサイト1000データに基づく石西礁湖および周辺海域のサンゴ被度変遷の解析2017

    • Author(s)
      向 草世香・中村隆志・灘岡和夫
    • Organizer
      第64回日本生態学会大会
    • Place of Presentation
      東京都新宿区早稲田大学早稲田キャンパス
    • Year and Date
      2017-03-16
    • Related Report
      2016 Research-status Report
  • [Presentation] オニヒトデ大発生のメカニズム解明および予測のための陸域ー海域ー生態系統合モデルシステム2016

    • Author(s)
      中村隆志・Laurence Patrick CB・天野慎也・渡邉敦・Ratio Sith・向草世香・福岡弘紀・鈴木豪・安田仁奈・長井敏・灘岡和夫
    • Organizer
      日本サンゴ礁学会第19回大会
    • Place of Presentation
      沖縄県那覇市沖縄タイムスビル
    • Year and Date
      2016-12-04
    • Related Report
      2016 Research-status Report
  • [Presentation] Distribution and gene flow analysis of sibling coral species, Acropora hyacinthus and Acropora spicifera in the north peripheral region2016

    • Author(s)
      中林朗・井口亮・北野裕子・上野光弘・長井敏・山北剛久・向草世香・山本由美・安田仁奈
    • Organizer
      Joint meeting of the 22nd International Congress of Zoology (ICZ) & the 87the meeting of the ZSJ
    • Place of Presentation
      沖縄県国頭郡恩納村沖縄科学技術大学院大学
    • Year and Date
      2016-11-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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