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Patterns of cetacean species diversity revealed from spatial modeling

Research Project

Project/Area Number 16K18739
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

Kanaji Yu  国立研究開発法人水産研究・教育機構, 国際水産資源研究所, 研究員 (10455503)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Keywords緯度勾配 / マイルカ科 / ライントランセクト / ベイズ / 小型鯨類 / 前線 / 北太平洋 / 空間モデル / 種多様性 / ハクジラ / イルカ / 北西太平洋 / 生息地 / 種多様度 / 亜寒帯循環 / 生態系 / 水産資源 / 動物学
Outline of Final Research Achievements

Currently there are approximately 90 extant cetacean species in the world, these being among the most diversely differentiated marine mammalian clades. The study focused on spatial patters of species diversity as a mechanism that would sustain species variability of cetacean species. We analyzed the dataset collected in the North Pacific for more than a quarter of a century using Density Surface Modeling (DSM) that integrate spatial modeling and line-transect method. We clarified spatial distribution patterns of 19 species. Based on these results, we then estimated spatial patterns of species diversity indices, and discussed about mechanisms for such results.

Academic Significance and Societal Importance of the Research Achievements

本研究では、生態系の高次捕食者としての鯨類に着目し、種多様性パターンを明らかにした。その背景にあるメカニズムを考察して、新たな学説を提案した点で学術的意義が高い。私たちが将来生態系サービスを享受し維持していくために、生物多様性や生態系機能を科学的に理解することが必要であるが、こと外洋域ついては圧倒的に情報が不足してきた。生態学の重要な概念である種多様性の緯度勾配について、北太平洋と北西太平洋の2つのスケールで、空間マップとして視覚的に表現した。外洋域生態系の機能と役割を理解するための基礎的情報を提供した点で、社会的意義がある。

Report

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

    (10 results)

All 2018 2017 2016

All Journal Article (6 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] 海棲哺乳類の個体数推定手法ー現状と将来課題ー2018

    • Author(s)
      金治 佑, 袴田 高志, 服部 薫, 小林 万里, 北門 利英, 加藤 秀弘
    • Journal Title

      哺乳類科学

      Volume: 58 (1) Pages: 83-84

    • NAID

      130007428312

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 海棲哺乳類の保全・管理のための調査・解析手法【11】空間モデル2018

    • Author(s)
      村瀬 弘人, 金治 佑, 佐々木 裕子
    • Journal Title

      海洋と生物

      Volume: 40 (30) Pages: 255-264

    • NAID

      40021623417

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Abundance estimates of six species of Delphinidae cetaceans off the Pacific coast of Japan between 1985 and 20152018

    • Author(s)
      Yu Kanaji, Tomio Miyashita, Shingo Minamikawa, Hideyoshi Yoshida
    • Journal Title

      Marine Mammal Science

      Volume: Online First Issue: 4 Pages: 1034-1058

    • DOI

      10.1111/mms.12502

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ecosystem modeling in the western North Pacific using Ecopath, with a focus on small pelagic fishes2018

    • Author(s)
      Shingo Watari, Hiroto Murase, Shiroh Yonezaki, Makoto Okazaki, Hidetada Kiyofuji, Tsutomu Tamura, Takashi Hakamada, Yu Kanaji, Toshihide Kitakado
    • Journal Title

      Marine Ecology Progress Series

      Volume: Online First Pages: 295-305

    • DOI

      10.3354/meps12508

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 海棲哺乳類の保全・管理のための調査・解析手法【9】個体数推定2017

    • Author(s)
      金治 佑
    • Journal Title

      月刊海洋

      Volume: 39 Pages: 512-522

    • NAID

      40021374732

    • Related Report
      2017 Research-status Report
  • [Journal Article] Spatial patterns of distribution, abundance, and species diversity of small odontocetes estimated using density surface modeling with line transect sampling2016

    • Author(s)
      Yu Kanaji, Makoto Okazaki, and Tomio Miyashita
    • Journal Title

      Deep Sea Research Part II Topical Studies in Oceanography

      Volume: - Pages: 151-162

    • DOI

      10.1016/j.dsr2.2016.05.014

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Long-term trends in distribution and abundance of small cetaceans estimated in relation to oceanographic and topographic variables in the waters off the Pacific coast of Japan2018

    • Author(s)
      Yu Kanaji, Hiroko Sasaki, Takashi Setou, HIdeyoshi Yoshida
    • Organizer
      CLIOTOP 4th Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 階層ベイズ型空間モデルによるハナゴンドウの個体数推定2017

    • Author(s)
      金治 佑, Tim Gerrodette
    • Organizer
      水産海洋学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Spatial distribution of six species of Delphinidae in the western North Pacific between 1985 and 20152017

    • Author(s)
      Yu Kanaji, Hiroko Sasaki, Takashi Setou, Tomio Miyashita, Shingo Minamikawa and Hideyoshi Yoshida
    • Organizer
      22nd Biennial Conference on the Biology of Marine Mammals
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 1985-2015年の船舶目視調査データを用いた小型鯨類6種の個体数推定2017

    • Author(s)
      金治 佑、宮下富夫、南川真吾、吉田英可
    • Organizer
      日本哺乳類学会自由集会 海棲哺乳類の個体数推定手法―現状と将来課題―
    • Related Report
      2017 Research-status Report

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

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