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Long-term effects of dead woods on community composition and structure of detritus food web

Research Project

Project/Area Number 17H03732
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Ecology/Environment
Research InstitutionThe University of Tokyo

Principal Investigator

Suzuki Satoshi  東京大学, 大学院農学生命科学研究科(農学部), 助教 (20633001)

Co-Investigator(Kenkyū-buntansha) 金子 信博  福島大学, 食農学類, 教授 (30183271)
深澤 遊  東北大学, 農学研究科, 助教 (30594808)
角田 智詞  信州大学, 学術研究院農学系, 助教(特定雇用) (30747936)
中森 泰三  横浜国立大学, 大学院環境情報研究院, 准教授 (50443081)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2017: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords枯死木 / 脂肪酸 / 安定同位体 / 伊勢湾台風 / 大規模風倒 / 食物網 / 安定同位体比 / 飼育実験 / メタゲノム / 腐食食物網 / 倒木
Outline of Final Research Achievements

The question of this study is “How will removal of downed logs from wind-disturbed forest affect the forest ecosystem long after the disturbance?” We compared species composition of invertebrates and food web structure in the forests where downed logs had been removed just after the wind disturbance due to a super typhoon in 1959 (unremoved sites) with those in the forests not removed (removed sites). Analysis of stable isotope ratio and fatty acids composition of invertebrates and their food sources revealed that downed logs originated from the typhoon is still contributing as a material resource of many species, and that bacterial pathway was increased in in the food web in the unremoved sites compared to the removed sites.

Academic Significance and Societal Importance of the Research Achievements

この研究は、大規模風倒などが起きたときに慣例的に行われている倒木搬出が、長期的に森林生態系に与える影響を考える上で重要な資料となる。代表者らの先行研究と合わせて、亜高山帯のような倒木の分解が遅い場所では、風倒後に倒木を搬出することで、50年以上にわたって炭素蓄積量が大きく減少すること、さらにはそれを利用する生物同士の食物網にも影響を与えることを示した。将来的に、気候変動に伴い強い台風の襲来が増加すると予想されており、大規模な風倒も増加すると考えられる。今後の大規模風倒があった場合には、本研究の結果も踏まえて、慎重に倒木搬出を検討する必要がある。

Report

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

    (13 results)

All 2020 2019 2018

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Climate influences the effect of fungal decay type on regeneration of Picea jezoensis var. hondoensis seedlings on decaying logs2020

    • Author(s)
      Fukasawa Yu、Ando Yoko、Suzuki Satoshi N.、Aizawa Mineaki、Sakuma Daisuke
    • Journal Title

      Canadian Journal of Forest Research

      Volume: 50 Issue: 1 Pages: 73-79

    • DOI

      10.1139/cjfr-2019-0147

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Does typhoon disturbance in subalpine forest have long-lasting impacts on saproxylic fungi, bryophytes, and seedling regeneration on coarse woody debris?2019

    • Author(s)
      Fukasawa Yu、Ando Yoko、Oishi Yoshitaka、Suzuki Satoshi N.、Matsukura Kimiyo、Okano Kunihiro、Song Zewei
    • Journal Title

      Forest Ecology and Management

      Volume: 432 Pages: 309-318

    • DOI

      10.1016/j.foreco.2018.09.036

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] How can we quantitatively study insects whose larvae live beneath the forest floor? A case study at an experimental long‐term log‐removal site in Japan2019

    • Author(s)
      Tsunoda Tomonori、Hyodo Fujio、Sugiura Daisuke、Kaneko Nobuhiro、Suzuki Satoshi N.
    • Journal Title

      Entomological Science

      Volume: 22 Issue: 3 Pages: 275-282

    • DOI

      10.1111/ens.12362

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dead wood offsets the reduced live wood carbon stock in forests over 50?years after a stand-replacing wind disturbance2019

    • Author(s)
      Suzuki Satoshi N.、Tsunoda Tomonori、Nishimura Naoyuki、Morimoto Junko、Suzuki Jun-Ichirou
    • Journal Title

      Forest Ecology and Management

      Volume: 432 Pages: 94-101

    • DOI

      10.1016/j.foreco.2018.08.054

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of vulnerability to catastrophic wind between Abies plantation forests and natural mixed forests in northern Japan2019

    • Author(s)
      Morimoto Junko、Nakagawa Kosuke、Takano Kohei T、Aiba Masahiro、Oguro Michio、Furukawa Yasuto、Mishima Yoshio、Ogawa Kenta、Ito Rui、Takemi Tetsuya、Nakamura Futoshi、Peterson Chris J
    • Journal Title

      Forestry: An International Journal of Forest Research

      Volume: 印刷中 Issue: 4 Pages: 436-443

    • DOI

      10.1093/forestry/cpy045

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] How can we quantitatively study insects whose larvae live beneath the forest floor? A case study at an experimental long-term log-removal site in Japan2019

    • Author(s)
      Tsunoda, T., Hyodo, F., Sugiura, D., Kaneko, N. & Suzuki, S.N.
    • Journal Title

      Entomological Science

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Warming increased feeding of a root-chewing insect at the soil surface and enhanced its damage on a grass2018

    • Author(s)
      Tsunoda Tomonori、Makoto Kobayashi、Suzuki Jun-Ichirou、Kaneko Nobuhiro
    • Journal Title

      Soil Biology and Biochemistry

      Volume: 126 Pages: 213-218

    • DOI

      10.1016/j.soilbio.2018.09.009

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 60年前の風倒木が亜高山帯無脊椎動物群集に与える影響2020

    • Author(s)
      鈴木智之・ 角田智詞・ 兵藤不二夫・ 杉浦大輔・ 深澤遊・ 中森泰三・ 金子信博
    • Organizer
      日本生態学会第67回全国大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Factors affecting functional composition of fungal communities in spruce logs among patchily located five subalpine forests in central Japan2019

    • Author(s)
      Yu Fukasawa, Kimiyo Matsukura, Yoko Ando, Satoshi N. Suzuki, Kunihiro Okano, Zewei Song, Mineaki Aizawa
    • Organizer
      Forests at Risk: Bialowieza and beyond
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 変形菌とトビムシの捕食被食関係における種ごとの反応の違い2018

    • Author(s)
      片岡万柚子,中森泰三
    • Organizer
      日本土壌動物学会第41回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Species-specific interactions between myxomycete plasmodia and collembola2018

    • Author(s)
      Kataoka, M., Nakamori, T.
    • Organizer
      11th International Mycological Congress, Puerto Rico Convention Center
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A long-term impact of forest disturbance on spruce seedling regeneration on coarse woody debris2018

    • Author(s)
      Yu Fukasawa, Yoko Ando, Satoshi Suzuki, Yoshitaka Oishi, Kimiyo Matsukura, Kunihiro Okano, Zewei Song
    • Organizer
      5th European Congress of Conservation Biology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 枯死木を利用する生物群集が森林生態系食物網に与える影響:50年前の風倒地を例に2018

    • Author(s)
      鈴木智之, 角田智詞, 杉浦大輔, 兵藤不二夫, 深澤遊, 中森泰三, 金子信博
    • Organizer
      第65回日本生態学会大会
    • Related Report
      2017 Annual Research Report

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

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