• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Relative importance of pathogenic and mycorrhizal fungi in creating species diversity in temperate forests

Research Project

Project/Area Number 16H04931
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Forest science
Research InstitutionTohoku University

Principal Investigator

Seiwa Kenji  東北大学, 農学研究科, 教授 (40261474)

Co-Investigator(Kenkyū-buntansha) 陶山 佳久  東北大学, 農学研究科, 准教授 (60282315)
深澤 遊  東北大学, 農学研究科, 助教 (30594808)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Keywords森林生態系 / 種多様性 / 病原菌 / 菌根菌 / 種特異性 / ギャップ / 距離依存性 / 相対優占度 / ジャンゼン-コンネル仮説 / 空間分布 / 種多様性創出メカニズム / ジャンゼン-コンネルモデル / Plant-soil feedback / 光環境 / 外生菌根菌 / アーバスキュラー菌根菌 / 落葉広葉樹 / 温帯林 / 相対的重要性 / 播種試験
Outline of Final Research Achievements

Mechanisms for creating species diversity in deciduous broadleaf forests were revealed by analyzing interactions with pathogenic and mycorrhizal fungi in the vicinity of a single mature tree. Species-specific pathogens in the vicinity of the parent tree caused mortality of the conspecific seedlings and replace them by heterospecific seedlings. We found that the Janzen-Connell hypothesis was also valid in creating species diversity in cool-temperate forests in Japan. On the other hand, in highly dominant species such as Quercus crispula and Fagus crenata, we revealed a positive feedback mechanism, in which the growth of conspecific seedlings was promoted by species-specific mycorrhizal fungi, indicating a mechanism reducing the species diversity.

Academic Significance and Societal Importance of the Research Achievements

地球上の森林生態系では生物多様性の劣化や生態系機能の喪失が懸念されている。日本でも全森林の5分の2が針葉樹人工林として単純林化し手入れ不足も相まって水源涵養機能や野生生物のハビタットとしての機能が大きく低下している。そこで、広葉樹を導入し混交林化し生態系機能を向上させようとする試みが増えている。さらに、都市近郊林や河畔林、奥地林近傍でも種多様性の復元は森林管理における大きな目標になっている。本研究が明らかにした種多様性の創出メカニズムは多様性の復元において、科学的論拠を与えると同時に、多様性復元のための技術的な指針としても有効であろう。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (31 results)

All 2020 2019 2018 2017 2016

All Journal Article (12 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Acknowledgement Compliant: 1 results) Presentation (15 results) Book (4 results)

  • [Journal Article] Gap creation alters the mode of conspecific distance-dependent seedling establishment via changes in the relative influence of pathogens and mycorrhizae2020

    • Author(s)
      Wulantuya, Kazuhiko Masaka, Bayandala, Yu Fukasawa, Kimiyo Matsukura, Kenji Seiwa
    • Journal Title

      Oecologia

      Volume: 192 Issue: 2 Pages: 449-462

    • DOI

      10.1007/s00442-020-04596-x

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Successful seedling establishment of arbuscular mycorrhizal-compared to ectomycorrhizal-associated hardwoods in arbuscular cedar plantations.2020

    • Author(s)
      Kenji Seiwa, Yuki Negishi, Yukino Eto, Masahiro Hishita, Kazuhiko Masaka, Yu Fukasawa, Kimiyo Matsukura, Masanori Suzuki
    • Journal Title

      Forest Ecology and Management

      Volume: 468 Pages: 118155-118155

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of thinning intensity in creating mixed hardwood and conifer forests within a Cryptomeria japonica conifer plantation: A 14-year study.2020

    • Author(s)
      Yuki Negishi, Yukino Eto, Masahiro Hishita, Sachi Negishi, Masanori Suzuki, Kazuhiko Masaka, Kenji Seiwa.
    • Journal Title

      Forest Ecology and Management

      Volume: 468 Pages: 118184-118184

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of mycorrhizal associations in ontogenetic changes in spatial distribution patterns of hardwoods in an old-growth forest2019

    • Author(s)
      2.Sasaki, T., Konno, M., Hasegawa, Y., Imaji, A., Terabaru, M., Nakamura, R., Ohira,N., Matsukura, K., Seiwa K.
    • Journal Title

      Oecologia

      Volume: 189 Issue: 4 Pages: 971-980

    • DOI

      10.1007/s00442-019-04376-2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of seed size and relative abundance in conspecific negative distance-dependent seedling mortality for eight tree species in a temperate forest2019

    • Author(s)
      Seiwa Kenji、Masaka Kazuhiko、Konno Miki、Iwamoto Susumu
    • Journal Title

      Forest Ecology and Management

      Volume: 453 Pages: 117537-117537

    • DOI

      10.1016/j.foreco.2019.117537

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Variable seed behavior increases recruitment success of a hardwood tree, Zelkova serrata , in spatially heterogeneous forest environments2018

    • Author(s)
      Oyama Hiroki、Fuse Osamu、Tomimatsu Hiroshi、Seiwa Kenji
    • Journal Title

      Forest Ecology and Management

      Volume: 415-416 Pages: 1-9

    • DOI

      10.1016/j.foreco.2018.02.004

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ecological properties of shoot- and single seeds in a hardwood, Zelkova serrata2018

    • Author(s)
      Oyama Hiroki、Fuse Osamu、Tomimatsu Hiroshi、Seiwa Kenji
    • Journal Title

      Data in Brief

      Volume: 18 Pages: 1734-1739

    • DOI

      10.1016/j.dib.2018.04.101

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Leaf diseases facilitate the Janzen-Connell mechanism regardless of light conditions: a 3-year field study2017

    • Author(s)
      Bayandala, Masaka K, Kenji Seiwa
    • Journal Title

      Oecologia

      Volume: 83(1) Issue: 1 Pages: 191-199

    • DOI

      10.1007/s00442-016-3757-4

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Canopy tree species and openness affect foliar endophytic fungal communities of understory seedlings2017

    • Author(s)
      Saya Kato, Yu Fukasawa, Kenji Seiwa
    • Journal Title

      Ecological Research

      Volume: 32 Issue: 2 Pages: 157-162

    • DOI

      10.1007/s11284-016-1426-z

    • NAID

      40021141442

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 自家不和合性の樹木クリにおける開花フェノロジー:二重雌雄異熟性 (duodichogamy)2017

    • Author(s)
      長谷川陽一, 陶山佳久, 清和研二
    • Journal Title

      日本生態学会誌

      Volume: 67 Pages: 31-39

    • NAID

      130006778315

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interaction of seed size with light quality and temperature regimes as germination cues in 10 temperate pioneer tree species.2016

    • Author(s)
      Xia Q, Ando M, Seiwa K
    • Journal Title

      Functional Ecology

      Volume: 30 Issue: 6 Pages: 866-874

    • DOI

      10.1111/1365-2435.12584

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Roles of pathogens on replacement of tree seedlings in heterogeneous light environments in a temperate forest: a reciprocal seed sowing experiment2016

    • Author(s)
      Bayandala, Yu Fukasawa, Kenji Seiwa
    • Journal Title

      Journal of Ecology

      Volume: 104 Issue: 3 Pages: 765-772

    • DOI

      10.1111/1365-2745.12552

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] 菌根菌タイプの違いが距離依存的な実生の定着に及ぼす影響2019

    • Author(s)
      古賀帆・佐々木崇徳・松倉君予・鈴木政紀・清和研二
    • Organizer
      66回日本生態学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 成木下の菌根菌相の違いが実生の生存に及ぼす影響2019

    • Author(s)
      松倉君予・佐々木崇德・鈴木政紀・古賀帆・岡野邦宏・清和研二
    • Organizer
      66回日本生態学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 菌根菌タイプの異なる広葉樹5種の成木下における実生種の置き換わり2019

    • Author(s)
      古賀帆・佐々木崇徳・鈴木政紀・清和研二
    • Organizer
      日本生態学会東北地区会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 日スギ人工林の混交林化が植物の葉の窒素濃度に与える影響2019

    • Author(s)
      増田千恵・清和研二
    • Organizer
      第130 回日本森林学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] スギ人工林への広葉樹導入による水質浄化能の向上2019

    • Author(s)
      森川夢奈・根岸有紀・鈴木政紀・林誠二・渡邊未来・清和研二
    • Organizer
      第130 回日本森林学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 成木下の菌根菌相の違いが実生の生存に及ぼす影響2019

    • Author(s)
      松倉君予・佐々木崇德・鈴木政紀・古賀帆・岡野邦宏・清和研二
    • Organizer
      第130 回日本森林学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] スギ人工林における間伐強度が木材生産・生態 系サービスに及ぼす影響2018

    • Author(s)
      根岸有紀・林 誠二・松尾 歩・岡野邦宏・多田千佳・鈴木 政紀・清和研二
    • Organizer
      第 129 回日本森林学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 混交林における窒素循環の促進におよぼす根系 の発達と土壌微生物叢の影響2018

    • Author(s)
      松尾 歩・岡野邦宏・林 誠二・根岸有紀・多田千佳・鈴木 政紀・清和研二
    • Organizer
      第 129 回日本森林学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 樹木の種多様性が細根の生産性を増加させるか ―スギ人工林の間伐強度試験14年目の結果から―2018

    • Author(s)
      根岸有紀, 松尾歩, 鈴木政紀, 清和研二
    • Organizer
      日本生態学会第65回全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 成木近傍では同種と他種実生のどちらが定着しやすいか-菌根菌・病原菌による影響-2018

    • Author(s)
      佐々木崇徳, 松倉君予, 鈴木政紀, 清和研二
    • Organizer
      日本生態学会第65回全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 間伐強度を変えたスギ人工林における12年間の混交林形成過程2017

    • Author(s)
      根岸有紀・清和研二
    • Organizer
      日本林学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 落葉広葉樹クリにおける種子散布制限と尾根ごとに異なる遺伝的組成2016

    • Author(s)
      長谷川陽一、高田克彦、陶山佳久、清和研二
    • Organizer
      第127回日本森林学会大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 間伐強度を変えたスギ人工林における12年間の混交林形成過程2016

    • Author(s)
      根岸有紀、清和研二
    • Organizer
      第127回日本森林学会大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 空間分布パターンの異なる落葉広葉樹 5 種にお ける 11 年間の動態パラメータ2016

    • Author(s)
      佐々木崇徳、清和研二
    • Organizer
      第127回日本森林学会大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] モウソウチクにおける放射能汚染の実態と除染 試験の効果2016

    • Author(s)
      齋藤智之、八木橋勉、清和研二、鈴木有映、今埜実希
    • Organizer
      第127回日本森林学会大会
    • Related Report
      2016 Annual Research Report
  • [Book] 樹に聴く清2019

    • Author(s)
      清和研二
    • Total Pages
      296
    • Publisher
      築地書館
    • ISBN
      4806715905
    • Related Report
      2018 Annual Research Report
  • [Book] 森林の変化と人類2018

    • Author(s)
      清和研二
    • Total Pages
      274
    • Publisher
      共立出版
    • ISBN
      9784320058170
    • Related Report
      2018 Annual Research Report
  • [Book] 樹と暮らす -家具と森林生態 (築地書館)2017

    • Author(s)
      清和研二, 有賀恵一
    • Total Pages
      209
    • Publisher
      築地書館
    • ISBN
      9784806715351
    • Related Report
      2017 Annual Research Report
  • [Book] 種子の生態 (植物学の百科事典)2016

    • Author(s)
      清和研二 (日本植物学会編)
    • Total Pages
      800
    • Publisher
      丸善
    • ISBN
      9784621300381
    • Related Report
      2016 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi