Randomness and non-randomness in the community organization

• Project/Area Number: 21770026
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Ecology/Environment
• Research Institution: Kyushu University (2011-2012); University of the Ryukyus (2009-2010)
• Principal Investigator: ARAKAKI Seiji 九州大学, 大学院・理学研究院, 助教 (10452963)
• Project Period (FY): 2009 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 群集生態 / メソコズム実験 / 個体間相互作用 / 帰無モデル解析 / 潮間帯魚類 / 群集形成 / タイドプール / ランダム

Research Abstract

Mesocosm aquaria which imitate a set of natural tidepools were established to observe the community organization of tidepool fishes. Several biotic interactions were recognised in both intra- and hetero-specific mixtures under different substrate conditions. There were positive and negative effects on fish growth depending on the species combination, although direct agonistic behaviour was rarely observed. Alarge-scale survey from southwestern Japan revealed latitudinal gradients in taxonomic richness and regional variation in community structure.

Research Products

• [Journal Article] Species and size matter: An experimental study of microhabitat use under the influence of competitive interactions in intertidal gobiids (2012)
  • Author(s): Arakaki S & Tokeshi M
  • Journal Title: Journal of Experimental Marine Biology and Ecology Volume: 418-419 Pages: 59-68
  • DOI: 10.1016/j.jembe.2012.03.011
  • Peer Reviewed
• [Journal Article] Analysis of spatial niche structure in coexisting tidepool fishes: null models based on multi-scale experiments (2011)
  • Author(s): Arakaki S & Tokeshi M
  • Journal Title: Journal of Animal Ecology Volume: 80 Issue: 1 Pages: 137-147
  • DOI: 10.1111/j.1365-2656.2010.01749.x
  • Peer Reviewed
• [Journal Article] Analysis of spatial niche structure in coexisting tidepool fishes : null models based on multi-scale experiments (2011)
  • Author(s): Seiji Arakaki
  • Journal Title: Journal of Animal Ecology Volume: 80 Pages: 137-147
  • Peer Reviewed
• [Presentation] Analysis of spatial niche utilisation in intertidal fishes: null models based on mesocosm experiment (2012)
  • Author(s): Arakaki S & Tokeshi M
  • Organizer: British Ecological Society, Annual Meeting
  • Place of Presentation: University of Birmingham (UK)
  • Year and Date: 2012-12-18
• [Presentation] 潮間帯水槽を用いたタイドプール魚類群集の空間利用解析 (2012)
  • Author(s): 新垣誠司
  • Organizer: 日本生態学会熊本地区例会
  • Place of Presentation: 熊本大学
  • Year and Date: 2012-11-10
• [Presentation] 潮間帯性ハゼ類の空間ニッチ利用と種間相互作用 (2012)
  • Author(s): 新垣誠司
  • Organizer: 日本ベントス学会・日本プランクトン学会合同大会
  • Place of Presentation: 東邦大学
  • Year and Date: 2012-10-05
• [Presentation] Spatial niche and biotic interactions: a mesocosm experiment (2012)
  • Author(s): Arakaki S & Tokeshi M
  • Organizer: The 5th EAFES International Congress
  • Place of Presentation: Ryukoku University (Japan)
  • Year and Date: 2012-03-20
• [Presentation] Spatial niche and biotic interactions : a mesocosm experiment (2012)
  • Author(s): Seiji Arakaki, M Tokeshi
  • Organizer: The 5th EAFES International Congress
  • Place of Presentation: 龍谷大学瀬田キャンパス(発表確定)
  • Year and Date: 2012-03-20
• [Presentation] 日本南西部におけるタイドプール魚類群集の構造パターンと地理的変異 (2009)
  • Author(s): 新垣誠司
  • Organizer: 日本生態学会・企画シンポジウム
  • Place of Presentation: 東京大学駒場キャンパス
  • Year and Date: 2009-03-17
• [Presentation] Analysis of spatial niche utilisation in intertidal fishes: null models based on mesocosm experiment
  • Author(s): Seiji Arakaki
  • Organizer: British Ecological Society, Annual Meeting
  • Place of Presentation: University of Birmingham, UK