Structure and dynamics of biological communities including multiple types of interactions such as mutualism and predation

• Project/Area Number: 22570026
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Ecology/Environment
• Research Institution: Osaka Prefecture University
• Principal Investigator: NAMBA Toshiyuki 大阪府立大学, 大学院・理学系研究科, 教授 (30146956)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 群集 / 生物多様性 / 生物間相互作用 / 相利 / ギルド内捕食 / 栄養カスケード / 安定性 / 多種共存要因 / 機能の反応 / 生態学 / 生物群集 / 相互作用 / 捕食 / 競争 / 数理モデル / 個体群動態

Research Abstract

Effects of multiple types of interactions on dynamics and stabilityof ecological communities were revealed. Inclusion of predators and competitors into a system of plants and mutualists makes the communities more complex and stable. Competition at the basal trophic level makes the dynamical stability of food chains crucially dependent on the number of trophic levels. In a system of intraguild predation, the profitability of the basal resource and intermediate consumer can explain the puzzle why the intermediate consumer does not become extinct in a highly productive environment.

Research Products

• [Presentation] Can adaptive foraging by intraguild predator promote persistence of intraguild prey in a productive environment (2013)
  • Author(s): Namba Toshiyuki
  • Organizer: 日本生態学会第60回大会
  • Place of Presentation: 静岡県コンベンションセンター(静岡市)
  • Year and Date: 2013-03-08
• [Presentation] Can adaptive foraging by intraguild predator promote persistence of intraguild prey in a productive environment? (2013)
  • Author(s): Toshiyuki Namba
  • Organizer: 日本生態学会第60回大会
  • Place of Presentation: 静岡県コンベンションアーツセンター 静岡市
• [Presentation] 捕食者が相利共生系に及ぼす影響についての数理的研究 (2013)
  • Author(s): 孫思墨, 芳賀敦子, 難波利幸
  • Organizer: 日本生態学会第60回大会
  • Place of Presentation: 静岡県コンベンションアーツセンター 静岡市
• [Presentation] 基底資源による2種類の適応的防御がIGP系に与える影響 (2013)
  • Author(s): 池川雄亮, 江副日出夫, 難波利幸
  • Organizer: 日本生態学会第60回大会
  • Place of Presentation: 静岡県コンベンションアーツセンター 静岡市
• [Presentation] ffects of apex consumers cascade dynamically across trophic levels (2012)
  • Author(s): Namba Toshiyuki
  • Organizer: The Society for Mathematical Biology Annual Meeting and Conference
  • Place of Presentation: Knoxville 市, Tennessee, アメリカ合衆国
  • Year and Date: 2012-07-27
• [Presentation] Effects of apex consumers and dynamic trophic cascades (2012)
  • Author(s): Namba Toshiyuki and Ibuki Atsushi
  • Organizer: 2012 ASLO Aquatic Sciences Meeting
  • Place of Presentation: びわ湖ホール(大津市)
  • Year and Date: 2012-07-11
• [Presentation] Effects of apex consumers cascade dynamically through food chains (2012)
  • Author(s): Namba Toshiyuki and Ibuki Atsushi
  • Organizer: 2012 China-Korea-Japan International Conference on Mathematical Biology
  • Place of Presentation: Pusan National University Sangnam International House (Pusan 市, 大韓民国)
  • Year and Date: 2012-05-22
• [Presentation] Effects of apex consumers cascade dynamically through food chains (2012)
  • Author(s): Toshiyuki NAMBA and Atushi IBUKI
  • Organizer: 2012 C-J-K International Conference on Mathematical Biology
  • Place of Presentation: Pusan National University Sangnam International House, Korea
  • Invited
• [Presentation] Effects of apex consumers cascade dynamically across trophic levels (2012)
  • Author(s): Toshiyuki NAMBA
  • Organizer: The Society for Mathematical Biology Annual Meeting and Conference
  • Place of Presentation: : Knoxville Convention Center Tennessee USA
• [Presentation] Effects of apex consumers cascade dynamically through food chains (2012)
  • Author(s): Toshiyuki NAMBA
  • Organizer: 第22回 日本数理生物学会 年会
  • Place of Presentation: 岡山大学 津島キャンパス 岡山市
• [Presentation] 基底資源による2種類の適応的防御がIGP系に与え る影響 (2012)
  • Author(s): 池川雄亮, 江副日出夫, 難波利幸
  • Organizer: 第22回 日本数理生物学会 年会
  • Place of Presentation: 岡山大学 津島キャンパス 岡山市
• [Presentation] 基底資源による 2 種類の適応的防御が IGP 系に 与える影響 (2012)
  • Author(s): 池川雄亮、江副日出夫、難波利幸
  • Organizer: 第２８回個体群生態学会大会
  • Place of Presentation: 東邦大学理学部（東邦大学・習志野キャンパス） 千葉県習志野市
• [Presentation] Effects of apex consumers and dynamic trophic cascades (2012)
  • Author(s): Toshiyuki Namba, Atsushi Ibuki
  • Organizer: 第59回日本生態学会大会
  • Place of Presentation: 龍谷大学 瀬田キャンパス 滋賀県大津市
• [Presentation] 植食者の侵入による相利共生系の安定化と崩壊 (2012)
  • Author(s): 孫思墨, 難波利幸
  • Organizer: 第59回日本生態学会大会
  • Place of Presentation: 龍谷大学 瀬田キャンパス 滋賀県大津市
• [Presentation] 生活史段階に依存した正および負の局所的相互作用と種の共存 (2012)
  • Author(s): 池川雄亮, 江副日出夫, 難波利幸
  • Organizer: 第59回日本生態学会大会
  • Place of Presentation: 龍谷大学 瀬田キャンパス 滋賀県大津市
• [Presentation] Effects of Apex Consumers and Dynamic Trophic Cascades (2012)
  • Author(s): Toshiyuki NAMBA and Atushi IBUKI
  • Organizer: 2012 ASLO Aquatic Sciences Meeting
  • Place of Presentation: びわ湖ホール 大津市
• [Presentation] Coexistence of intraguild prey and predator in a heterogeneous environment (2011)
  • Author(s): Namba Toshiyuki
  • Organizer: International Conference on Analytic Mathematics and Its Applications
  • Place of Presentation: 豫花大酒店(信陽市,河南省,中華人民共和国)
  • Year and Date: 2011-08-09
• [Presentation] Intraguild Predation in a Source-Sink Metacommunity (2011)
  • Author(s): Namba Toshiyuki
  • Organizer: European Conference on Mathematical and Theoretical Biology2011
  • Place of Presentation: Jagiellonian University (Krakow 市, ポーランド)
  • Year and Date: 2011-06-28
• [Presentation] rruptive dynamics of deer populations and effects of wolves (2011)
  • Author(s): Namba Toshiyuki, Ohno Aiko, Yoshimura Yoshika
  • Organizer: 第5回国際数理生物学会議
  • Place of Presentation: 南京理工大学(南京市,中華人民共和国)
  • Year and Date: 2011-06-04
• [Presentation] チャネルの異なる雑食とギルド内捕食を含む群集の構造と安定性 (2011)
  • Author(s): 森田由香里・難波利幸
  • Organizer: 日本生態学会第58回大会
  • Place of Presentation: 札幌コンベンションセンター札幌市
  • Year and Date: 2011-03-11
• [Presentation] 植物個体間の正の相互作用が群集動態に及ぼす効果:格子モデルによる考察 (2011)
  • Author(s): 池川雄亮・江副日出夫・難波利幸
  • Organizer: 日本生態学会第58回大会
  • Place of Presentation: 札幌コンベンションセンター札幌市
  • Year and Date: 2011-03-10
• [Presentation] Irruptive Dynamics of Deer Populations and Effects of Wolves (2011)
  • Author(s): Toshiyuki Namba, Aiko Ohno and Yoshika Yoshimura
  • Organizer: 第5回国際数理生物学会議
  • Place of Presentation: 南京理工大学 中華人民共和国 南京市
• [Presentation] Intraguild Predation in a Source (2011)
  • Author(s): Toshiyuki Namba
  • Organizer: European Conference on Mathematical and Theoretical Biology 2011
  • Place of Presentation: Jagiellonian University Krakow市, Porland
• [Presentation] Multipleunstable steady states and ungulate population dynamics (2010)
  • Author(s): Namba Toshiyuki, Ohno Aiko
  • Organizer: 第3回日中数理生物学コロキューム
  • Place of Presentation: 海北緑園休閑度暇会議中心(北京市,中華人民共和国)
  • Year and Date: 2010-10-19
• [Presentation] Multiple unstable steady states and ungulate population dynamics (2010)
  • Author(s): Toshiyuki Namba, Aiko Ohno
  • Organizer: 第3回日中数理生物学コロキューム
  • Place of Presentation: 海北緑園休閑度暇会議中心,北京市,中華人民共和国
  • Year and Date: 2010-10-19
• [Presentation] うまい草とまずい草の存在がシカ個体群の動態に及ぼす影響 (2010)
  • Author(s): 難波利幸
  • Organizer: 第20回日本数理生物学会大会
  • Place of Presentation: 北海道大学,札幌市
  • Year and Date: 2010-09-14
• [Presentation] Effects of palatable and unpalatable plants on herbivore population dynamics (2010)
  • Author(s): Namba Toshiyuki, Ohno Aiko
  • Organizer: British Ecological Society Annual Meeting 2010
  • Place of Presentation: University of Leeds (Leeds市,イギリス)
  • Year and Date: 2010-09-09
• [Presentation] Effects of palatable and unpalatable plants on herbivore population dynamics (2010)
  • Author(s): Toshiyuki Namba, Aiko Ohno
  • Organizer: British Ecological Society Annual Meeting 2010
  • Place of Presentation: リース大学,リーズ市,イギリス
  • Year and Date: 2010-09-09
• [Remarks]
  • URL: http://www.b.s.osakafu-u.ac.jp/~tnamba/nj-index.html