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Indirect effect and habitat creation through bear shelves formation by Japanese black bears

Research Project

Project/Area Number 21780154
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Forest science
Research InstitutionNagano University

Principal Investigator

TAKAHASHI Kazuaki  長野大学, 環境ツーリズム学部, 准教授 (10401184)

Project Period (FY) 2009 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2011: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2010: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsエコシステムエンジニア / クマ棚 / ツキノワグマ / 林冠ギャップ / 間接効果 / 生物間相互作用 / 野生動植物 / 結実 / エコシステム・エンジニア
Research Abstract

Ridges were significantly dominant over slopes and valleys in terms of total bear-created canopy gaps. The annual rate of bear-created canopy gap formation reached 141.3 m2 ha〓1 yr〓1 on ridges, which were hot spots in terms of black bear activity. This rate was approximately 6.6 times that of tree-fall gap formation on ridges at this study site. Canopy disturbance created by black bears in the middle‐top canopy layers were key for improving light conditions and accelerating fruiting by fleshy-fruited plants. Camera-trap data showed that birds and mammals used bear shelves as habitats for foraging, hoarding, resting, and reproducing.

Report

(5 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (15 results)

All 2013 2012 2011 2010 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (8 results) Remarks (4 results)

  • [Journal Article] Spatial distribution and size of small canopy gaps created by Japanese black bears : estimating gap size using dropped branch measurements.2013

    • Author(s)
      Kazuaki Yakahashi, Takahashi K
    • Journal Title

      BMC Ecology

      Volume: 13 Issue: 1 Pages: 23-23

    • DOI

      10.1186/1472-6785-13-23

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fleshy fruit characteristics in a temperate deciduous forest of Japan : how unique are they?2012

    • Author(s)
      Takashi Masaki, Kazuaki Takahashi. Ayako Sawa, Tomoyuki Kado, Shoji Naoe, Shinsuke Koike, Mitsue Shibata
    • Journal Title

      Journal of Plant Research

      Volume: 125 Issue: 1 Pages: 103-114

    • DOI

      10.1007/s10265-011-0423-0

    • NAID

      10030302684

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fleshy fruit characteristics in a temperate deciduous forest of Japan : how unique are they?2011

    • Author(s)
      Takashi Masaki, Kazuaki Takahashi, Ayako Sawa, Tomoyuki Kado, Shoji Naoe, Shinsuke Koike, Mitsue Shibata
    • Journal Title

      Journal of Plant Research

      Volume: (in press 未定)

    • NAID

      10030302684

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] クマ剥ぎが林内植生と光環境に与える影響2013

    • Author(s)
      高橋一秋,高橋香織
    • Organizer
      第60回日本生態学会
    • Place of Presentation
      静岡
    • Related Report
      2012 Final Research Report
  • [Presentation] ツキノワグマによって創出された小規模林冠ギャップのサイズ推定2011

    • Author(s)
      高橋一秋, 高橋香織, 柳貴洋, 美齊津裕太
    • Organizer
      日本生態学会
    • Place of Presentation
      札幌コンベンションセンター(北海道)
    • Year and Date
      2011-03-11
    • Related Report
      2010 Annual Research Report
  • [Presentation] ツキノワグマによって創出された小規模林冠ギャップのサイズ推定2011

    • Author(s)
      高橋一秋,高橋香織,柳貴洋,美齊津裕太
    • Organizer
      第58回日本生態学会
    • Place of Presentation
      札幌
    • Related Report
      2012 Final Research Report
  • [Presentation] The Japanese black bear (Ursus thibetanus japonicus) as seed dispersers and ecosystem engineers2010

    • Author(s)
      Kazuaki Takahashi, Kaori Takahashi, Takahiro Yanagi, Yuta Misaizu, Hiroo Tamatani, Masaru Koyama, Izumi Washitani
    • Organizer
      The 5th International Symposium-Workshop on Frugivores and Seed Dispersal
    • Place of Presentation
      Le Corum (Montpellier, France)
    • Year and Date
      2010-06-14
    • Related Report
      2010 Annual Research Report
  • [Presentation] ツキノワグマによるクマ棚の形成2010

    • Author(s)
      高橋一秋
    • Organizer
      第57回日本生態学会
    • Place of Presentation
      東京大学駒場キャンパス(東京都)
    • Year and Date
      2010-03-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] The Japanese black bear as seed dispersers and ecosystem engineers2010

    • Author(s)
      Kazuaki Takahashi, Takahashi K, YanagiT, Misaizu Y, Tamatani H, Koyama M Washitani
    • Organizer
      The 5th International Symposium-Workshop on Frugivores and Seed Dispersal
    • Place of Presentation
      Montpellier,France
    • Related Report
      2012 Final Research Report
  • [Presentation] ツキノワグマによるクマ棚の形成2010

    • Author(s)
      高橋一秋,高橋香織,柳貴洋,美齊津裕太
    • Organizer
      第57回日本生態学会
    • Place of Presentation
      東京
    • Related Report
      2012 Final Research Report
  • [Presentation] クマ剥ぎが林内植生と光環境に与える影響

    • Author(s)
      高橋一秋
    • Organizer
      日本生態学会
    • Place of Presentation
      静岡県コンベンションアーツセンター
    • Related Report
      2012 Annual Research Report
  • [Remarks] 高橋一秋のWebsite-クマ棚研究

    • URL

      http://www.nagano.ac.jp/education_research/kyouin/k-takahashi2/

    • Related Report
      2012 Final Research Report
  • [Remarks] クマ棚研究

    • URL

      http://www.nagano.ac.jp/education_research/kyouin/k-takahashi2/index.html#anchor9

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.nagano.ac.jp/education_research/kyouin/k-takahashi2/index.html#p6

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.nagano.ac.jp/education_research/kyouin/k-takahashi2/index.html#p6

    • Related Report
      2010 Annual Research Report

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Published: 2009-04-01   Modified: 2019-07-29  

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