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Establishing an endangered microbat conservation management plan based on comprehensive surveys in a candidate World Natural Heritage site

Research Project

Project/Area Number 19K06094
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39060:Conservation of biological resources-related
Research InstitutionTokai University

Principal Investigator

Kawai kuniko  東海大学, 生物学部, 教授 (60451415)

Co-Investigator(Kenkyū-buntansha) Vincenot C.E.  京都大学, 情報学研究科, 助教 (80751908)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsユネスコの世界自然遺産地域 / 小コウモリ類 / 保全 / 音響ルアー / 自動録音装置 / 森林棲コウモリ類 / 西表島 / やんばる / 世界自然遺産地域 / 超音波自動録音装置 / 分布 / 未確認種 / ユネスコ世界自然遺産候補地 / ユネスコ 自然遺産候補地 / ユネスコ自然遺産候補地
Outline of Research at the Start

南西諸島の生物相は多様性・固有性・依存性が高いことで知られ、ユネスコ自然遺産の候補地となっている。これらの地域に生息する小コウモリ類はIUCNのレッドリストに記載され、昆虫食者としてまた被食者として地域の生物多様性維持に貢献しているにも関わらず、生息状況の把握は十分になされていない。本研究は、小コウモリ類の発する超音波の自動録音装置と捕獲に音響ルアーを組み合わせる独自の技術を用い、沖縄島北部ならびに西表島に着目し、小コウモリ類の分布状況を把握し、その分布に影響を与える環境要因と相対的な生息密度を明らかにし、人的影響の程度を評価した上で、明確な保全モデルの確立を目的とする。

Outline of Final Research Achievements

The goals of this research were to 1) determine current microbat distributions in Iriomote and Yambaru, both part of the UNESCO World Natural Heritage Site, 2) determine the environmental factors affecting these distributions and relative bat densities, 3) assess the extent of human impacts, and 4) make conservation recommendations. We surveyed 44 sites on Iriomote and 70 sites in Kunigami Village using automated acoustic recorders and supplemented our acoustic data by capturing bats. On Iriomote, Hipposideros turpis were recorded less often and at fewer sites than the two other cave-roosting species. In Kunigami, cave-roosting bats were more widespread than tree-roosting species. Myotis yanbarensis was concerningly rare and appears to prefer riparian old-growth forests. Our preliminary results suggest that tourism-related disturbance of cave roosts on Iriomote and the limited extent of old-growth forests in Yambaru need to be addressed to recover the bat populations of these islands.

Academic Significance and Societal Importance of the Research Achievements

本研究はユネスコの世界自然遺産地域となった、西表島・沖縄北部やんばるにおいて、固有種でかつ絶滅危惧種である小コウモリ類に着目した。コウモリ類は夜行性でかつ高い飛翔能力を持つため、中・南琉球におけるコウモリ類の調査は洞窟内の調査が中心であり森林棲コウモリ類の調査は行われてこなかった。この理由として森林内の捕獲調査が危険で困難であり、生息密度が低い場合は捕獲効率が非常に低いことが挙げられる。本研究は、自動録音装置と音響ルアーを併用した捕獲調査を行うことによって、小コウモリ類の網羅的調査に成功し、また保全に関わる重要な知見を得た。また、観光ツアーがコウモリ類の脅威となっていることを指摘した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Roosting ecology of endangered plant-roosting bats on Okinawa Island: Implications for bat-friendly forestry practices2021

    • Author(s)
      Jason H. Preble, Christian E. Vincenot, Sazuhiko Saito, Nobuhito Ohte
    • Journal Title

      Ecology and Evolution

      Volume: 00 Issue: 20 Pages: 1-11

    • DOI

      10.1002/ece3.8101

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Capturing endangered endemic Okinawan bats with acoustic lures2021

    • Author(s)
      Jason H. Preble, Christian E. Vincenot a, David A. Hill, Nobuhito Ohte a
    • Journal Title

      Journal for Nature Conservation

      Volume: 64 Pages: 1-6

    • DOI

      10.1016/j.jnc.2021.126074

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent nest tree use by the critically endangered Okinawa woodpecker in relation to forest age and two exotic forest pests2021

    • Author(s)
      Kotaka Nobuhiko、Preble Jason、Saito Kazuhiko、Toguchi Yutaka、Kudaka Masahiro、Sakoda Taku、Yagihashi Tsutomu
    • Journal Title

      Journal of Forest Research

      Volume: 26 Issue: 3 Pages: 192-200

    • DOI

      10.1080/13416979.2021.1913790

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bane or Blessing? Reviewing Cultural Values of Bats across the Asia-Pacific Region2021

    • Author(s)
      Low Mary-Ruth、Hoong Wong Zhi、Shen Zhiyuan、Murugavel Baheerathan、Mariner Nikki、Paguntalan Lisa Marie、Tanalgo Krizler、Aung Moe Moe、Sheherazade .、Bansa Lawrence Alan、Sritongchuay Tuanjit、Preble Jason Hideki、Aziz Sheema Abdul
    • Journal Title

      Journal of Ethnobiology

      Volume: 41 Issue: 1 Pages: 18-34

    • DOI

      10.2993/0278-0771-41.1.18

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] In the shadow of the rising sun: a systematic review of Japanese bat research and conservation2020

    • Author(s)
      Preble Jason H.、Ohte Nobuhito、Vincenot Christian E.
    • Journal Title

      Mammal Review

      Volume: 51 Issue: 1 Pages: 109-126

    • DOI

      10.1111/mam.12226

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ヤンバルホオヒゲコウモリは老齢林の河川に依存している?2022

    • Author(s)
      Jason H PREBLE, Christian E VINCENOT, 齋藤和彦, 大手信人
    • Organizer
      日本生態学会2021年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Clarifying the distributions of Iriomote Island’s known and unknown microbats using acoustic surveys: a preliminary report2021

    • Author(s)
      Kuniko Kawai, Jason H. Preble, Christian E. Vincenot
    • Organizer
      日本哺乳類学会2021年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] In the shadow of the rising sun: a systematic review of Japanese bat research and conservation2020

    • Author(s)
      Preble Jason H.
    • Organizer
      15th European Bat Research Symposium.
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] n the shadow of the rising sun: a systematic review of Japanese bat research and conservation2020

    • Author(s)
      Preble Jason H.
    • Organizer
      Bat Conservation Trust BatFest 2020, Bat Science Stage
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Acoustics and Occupancy of Endangered Tree-Dwelling Bats, Murina ryukyuana and Myotis yanbarensis, in Northern Okinawa Island2019

    • Author(s)
      JJason H Preble, Christian E Vincenot, Nobuhito Ohte
    • Organizer
      International Bat Research Conference 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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