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Monitoring of coral reef ecosystem by underwater biological sounds

Research Project

Project/Area Number 17H00799
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental and ecological symbiosis
Research InstitutionThe Sasakawa Peace Foundation (2019)
Fisheries Research and Education Agency (2017-2018)

Principal Investigator

AKAMATSU TOMONARI  公益財団法人笹川平和財団, 海洋政策研究所 海洋政策研究部, 上席研究員 (00344333)

Co-Investigator(Kenkyū-buntansha) Lin TzuHao  国立研究開発法人海洋研究開発機構, 海洋生物多様性研究分野, ポストドクトラル研究員 (00824377)
フレデリック シニゲル  琉球大学, 熱帯生物圏研究センター, ポスドク研究員 (10625940)
波利井 佐紀  琉球大学, 熱帯生物圏研究センター, 准教授 (30334535)
御手洗 哲司  沖縄科学技術大学院大学, 海洋生態物理学ユニット, 准教授 (80567769)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥38,350,000 (Direct Cost: ¥29,500,000、Indirect Cost: ¥8,850,000)
Fiscal Year 2019: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Fiscal Year 2018: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2017: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Keywordsサウンドスケープ / 騒音影響評価 / 機械学習 / 魚類 / 鯨類 / 環境アセスメント / サンゴ礁 / 温暖化 / 海洋温暖化 / 生物多様性 / サンゴ / 共生生物 / 受動的生物音モニタリング / 水中生物音響 / 音響リモートセンシング / 海洋生態 / 長期生態学研究ネットワーク / サンゴ白化 / 発音魚 / クジラ
Outline of Final Research Achievements

Many types of sounds can be heard in the water. Composition of various sources changes diurnally or seasonally. This research visualized underwater soundscape using unsupervised machine learning. Based on the recordings of multiple years, soundscape in coral reefs showed daily and seasonal changes. In addition, diversity indexes of sound types in deep water was higher than that in shallow water. The result supports the refugia hypothesis that suggest mesophotic coral reef ecosystem could have less effect by ocean warming.

Academic Significance and Societal Importance of the Research Achievements

水中音記録と機械学習を組み合わせて、これまで見過ごされていた新しい観測対象であるサウンドスケープを可視化した。音は、Essential Ocean Variablesにも挙げられるようになり、特に人間による直接かつ連続した観察が難しい沖合や深海での生態系の理解に役立つと考えられる。サウンドスケープの構成要素が生物音の場合、その音の種類の多様性は生物種の多様性を示すひとつの指標とも考えられる。海中観測の新しい手法として、サウンドスケープ解析が提案された。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (20 results)

All 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results) Presentation (12 results) (of which Int'l Joint Research: 12 results,  Invited: 2 results) Book (1 results) Funded Workshop (2 results)

  • [Int'l Joint Research] University of Phillipine, Cebu(フィリピン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Jose Alves Gomes/Vera da Silva(ブラジル)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Ayaka Amaha Ozturk/Ayhan Dede(トルコ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Using Soundscapes to Assess Deep-Sea Benthic Ecosystems2019

    • Author(s)
      Lin Tzu-Hao、Chen Chong、Watanabe Hiromi Kayama、Kawagucci Shinsuke、Yamamoto Hiroyuki、Akamatsu Tomonari
    • Journal Title

      Trends in Ecology & Evolution

      Volume: 34 Issue: 12 Pages: 1066-1069

    • DOI

      10.1016/j.tree.2019.09.006

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Soundscape of an Indo-Pacific humpback dolphin (Sousa chinensis) hotspot before windfarm construction in the Pearl River Estuary, China: Do dolphin engage in noise avoidance and passive eavesdropping behavior?2019

    • Author(s)
      Wang Zhi-Tao、Akamatsu Tomonari、Nowacek Douglas P.、Yuan Jing、Zhou Lu、Lei Pei-Yu、Li Jiao、Duan Peng-Xiang、Wang Ke-Xiong、Wang Ding
    • Journal Title

      Marine Pollution Bulletin

      Volume: 140 Pages: 509-522

    • DOI

      10.1016/j.marpolbul.2019.02.013

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Visualization of distribution and diversity of aquatic animals based on long term recording data sets2019

    • Author(s)
      Tomonari Akamatsu
    • Organizer
      14th International Conference on Theoretical and Computational Acoustics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Seasonal change of soundscape in coral reef2019

    • Author(s)
      Tomonari Akamatsu, Tzu-Hao Lin, Frederic Siniger, Saki Harii
    • Organizer
      The Thirteen Annual Meeting of Asian Fisheries Acoustics Society
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characterizing diversity of fish sounds using audio information retrieval2019

    • Author(s)
      Tzu-Hao Lin, Tomonari Akamatsu, Colin Kuo-Chang Wen
    • Organizer
      The Thirteen Annual Meeting of Asian Fisheries Acoustics Society
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Passive acoustic monitoring of animal sounds; a new tool for ecological obser-vation2018

    • Author(s)
      Tomonari Akamatsu
    • Organizer
      13th Western Pacific Acoustics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tropical ocean soundscape, an index of bio-diversity2018

    • Author(s)
      Tomonari Akamatsu, Lin Tzu-Hao, Sinniger Frederic, Harii Saki
    • Organizer
      13th Western Pacific Acoustics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Information retrieval from marine soundscape by using machine learning-based source separation2018

    • Author(s)
      Tzu-Hao Lin, Katsunori Fujikura, Tomonari Akamatsu, Yu Tsao
    • Organizer
      10th International Conference on Ecological Informatics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Information retrieval from soundscape by using blind source separation and clustering2018

    • Author(s)
      Tzu-Hao Lin, Yu Tsao, Tomonari Akamatsu, Mao-Ning Tuanmu, Katsunori Fujikura
    • Organizer
      176th Meeting of the Acoustical Society of America
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Coral reef soundscape to measure the species distribution and biodiversity2018

    • Author(s)
      Tomonari Akamatsu, Tzu-Hao Lin, Yu Tsao, Frederic Sinniger, Saki Harii
    • Organizer
      Oceans 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Acoustical mapping of damsel fish using towed hydrophone in coral reef2018

    • Author(s)
      Tomonari Akamatsu, Saki Harii, Frederic Sinniger
    • Organizer
      2nd Oceanoise Asia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Information retrieval of marine soundscape via unsupervised source separation2018

    • Author(s)
      Tzu-Hao Lin, Yu Tsao, Tomonari Akamatsu
    • Organizer
      2nd Oceanoise Asia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Monitoring of coral reef ecosystem: an integrated approach of marine soundscape and machine learning2017

    • Author(s)
      Tzu-Hao Lin, Tomonari Akamatsu, Frederic Sinniger, Saki Harii, Yu Tsao
    • Organizer
      CABE 2017, Taipei, Taiwan.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improving the evaluation of soundscape variability via blind source separation2017

    • Author(s)
      Tzu-Hao Lin, Tomonari Akamatsu, Mao-Ning Tuanmu, Chun-Chia Huang, Chiou-Ju Yao, Shih-Hua Fang, Yu Tsao
    • Organizer
      174th Meeting of the Acoustical Society of America
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Book] 水中生物音響学 : 声で探る行動と生態2019

    • Author(s)
      赤松友成、 木村里子、市川光太郎
    • Total Pages
      176
    • Publisher
      コロナ社
    • ISBN
      9784339013405
    • Related Report
      2018 Annual Research Report
  • [Funded Workshop] application of soundscape for exploring the potential of marine environmental sensing2019

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] 2nd Oceanoise Asia2018

    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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