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Studies for the effects of deer management on timber and tree lines

Research Project

Project/Area Number 20K06136
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40010:Forest science-related
Research InstitutionYamanashi Forest Research Institute

Principal Investigator

Nagaike Takuo  山梨県森林総合研究所, その他部局等, 特別研究員 (50359254)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsニホンジカ / 剥皮 / 標高傾度 / 枯死率 / 摂食 / 高茎草原 / ダケカンバ林 / 高山帯 / ニホンジカ管理 / 捕獲圧 / 捕獲困難地 / 気候変動
Outline of Research at the Start

ニホンジカの高山帯への進出は、その摂食により森林限界や樹木限界のような自然生態系の成立過程に大きな影響を及ぼす可能性がある。また、ニホンジカの個体数管理は、ニホンジカの行動を変化させその分布域をより奥地化させる可能性がある。そこで本研究では、ニホンジカとその個体数管理が森林限界・樹木限界に及ぼす影響を、以下の2つの点を明らかにすることで評価し、今後の高標高域におけるニホンジカ管理への提案を行う。
① ニホンジカの森林限界・樹木限界への影響はあるか?
② 低標高でのニホンジカ捕獲圧の強弱はニホンジカの高標高での分布に影響しているか?

Outline of Final Research Achievements

In the Yatsugatake Mountains, a survey was conducted to clarify the bark stripping by sika deer in subalpine coniferous forests. The bark stripping rate in each survey area was calculated as the ratio of the number of stripped trees to the number of living trees. The results for the subalpine coniferous forest (average 19.7%) were the second highest bark stripping rate after the Okuchichibu Mountains compared to other subalpine coniferous forests in the Yamanashi prefecture, central Japan.
The impact of bark stripping on trees around Mt. Kita was compared with the results for 2014 and 2018. The bark stripping rate by altitude was high around 2,200 m, and tended to decrease as the altitude increased. Compared to 2014, 11 survey plots had an increased bark stripping rate in 2023, 4 plots areas had the same rate, and 4 plots had a decrease, meaning that the bark stripping rate had increased in many survey areas.

Academic Significance and Societal Importance of the Research Achievements

ニホンジカの高標高域での影響の定量化は進んでいなかったが、本研究によって、山梨県内の影響を可視化できた。また、標高傾度での影響度を明らかにできたことにより、今後の気候変動適応策にニホンジカ管理を組み込むことが可能になると考えている。また、ニホンジカ嗜好種の標高的な分布から、樹木の気候変動による移動への可能性についての情報を得ることができた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Bark Stripping by Deer Disturbs Regeneration in a Larix?Abies Subalpine Forest2023

    • Author(s)
      Nagaike Takuo
    • Journal Title

      Forests

      Volume: 14 Issue: 2 Pages: 369-369

    • DOI

      10.3390/f14020369

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Floristic Homogenization and Differentiation under Deer Grazing in a Subalpine Zone in Central Japan2023

    • Author(s)
      Nagaike Takuo
    • Journal Title

      Diversity

      Volume: 15 Issue: 2 Pages: 192-192

    • DOI

      10.3390/d15020192

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Review of the Current Status and Perspectives of Exotic Conifer Plantations2021

    • Author(s)
      長池卓男
    • Journal Title

      Journal of the Japanese Forest Society

      Volume: 103 Issue: 4 Pages: 297-310

    • DOI

      10.4005/jjfs.103.297

    • NAID

      130008097938

    • ISSN
      1349-8509, 1882-398X
    • Year and Date
      2021-08-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bark Stripping by Deer Was More Intensive on New Recruits than on Advanced Regenerants in a Subalpine Forest2020

    • Author(s)
      Takuo Nagaike
    • Journal Title

      Forests

      Volume: 11 Issue: 5 Pages: 490-490

    • DOI

      10.3390/f11050490

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of heavy, repeated bark stripping by Cervus nippon on survival of Abies veitchii in a subalpine coniferous forest in central Japan2020

    • Author(s)
      Nagaike T
    • Journal Title

      Journal of Forestry Research

      Volume: 31 Issue: 4 Pages: 1139-1145

    • DOI

      10.1007/s11676-019-00940-x

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Effects of bark stripping by sika deer on forest stand dynamics with elevational gradient in subalpine mixed forests, central Japan2023

    • Author(s)
      Nagaike T.
    • Organizer
      IUFRO Uneven-aged silviculture: insights into forest adaptation in times of global change
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 南アルプス亜高山帯植生の12年間の変化に及ぼすニホンジカの影響2023

    • Author(s)
      長池卓男
    • Organizer
      日本生態学会第70回全国大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 富士山亜高山帯針葉樹林の森林動態に及ぼすニ ホンジカ剥皮の影響2023

    • Author(s)
      長池卓男・玉田勝也・長谷川喬平・林 耕太・廣瀬
    • Organizer
      第134回日本森林学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] ダケカンバ林に生育する常緑針葉樹はニホンジカに集中的に剥皮されているか?2022

    • Author(s)
      長池卓男
    • Organizer
      日本生態学会第69回全国大会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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