the effects of invasive woody species on belowground ecosystem of oceanic island

• Project/Area Number: 21710243
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Resource conservation science
• Research Institution: Tohoku University
• Principal Investigator: KUROKAWA Hiroko 東北大学, 大学院・生命科学研究科, 助教 (70515733)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 生態系保全 / 外来種 / 生態系機能 / 植物機能形質 / 炭素・栄養塩循環 / 小笠原 / フェノール性物質 / 植物群集 / 植物機能的性質

Research Abstract

The aim of this study was to understand how an invasive woody species, Bischofia javanica, affect soil ecosystem of oceanic islands, Ogasawara, in Japan. First, we compared the leaf functional traits of B. javanica to those of native woody species in Ogasawara. We found that B. javanica had higher phenolic concentrations in their leaves when compared to native woody species. It is also suggested that B. javanica increased soil acidity and decreased phenolic concentrations and microbial activity in soils probably through their leaf litter.

Research Products

• [Journal Article] Cornelissen. Global to community scale differences in the prevalence of divergent and convergent leaf trait distributions in plant assemblages. (2011)
  • Author(s): Freschet, GT., A. Dias, DD. Ackerly, R. Aerts, PM. van Bodegom, WK. Cornwell, M. Dong, TG. Elumeeva, T Jianping, H Kurokawa, G Liu, VG. Onipchenko, JC. Ordonez, DA. Peltzer, SJ. Richardson, NA. Soudzilovskaia, JHC.
  • Journal Title: (2011)Global Ecology and Biogeography Volume: 20 Pages: 755-765
  • Peer Reviewed
• [Journal Article] Global to community scale differences in the prevalence of divergent and convergent leaf trait distributions in plant assemblages (2011)
  • Author(s): Freschet, GT, 他(著者17名中10人目)
  • Journal Title: Global Ecology and Biogeography Volume: 20 Issue: 5 Pages: 755-765
  • DOI: 10.1111/j.1466-8238.2011.00651.x
  • Peer Reviewed
• [Presentation] 異なる森林生態系における種多様性損失と機能的多様性の変化 (2012)
  • Author(s): 黒川紘子、饗庭正寛、片渕正紀、柴田嶺、石田敏、Lamthai Asanok, 佐々木雄大、中静透
  • Organizer: 日本生態学会第59回全国大会
  • Place of Presentation: 滋賀県大津市
  • Year and Date: 2012-03-18
• [Presentation] 異なる森林生態系における種多様性損失と機能的多様性の変化 (2012)
  • Author(s): 黒川紘子, 饗庭正寛, 片渕正紀, 柴田嶺, 石田敏, Lamthai Asanok, 佐々木雄大, 中静透
  • Organizer: 日本生態学会第59回全国大会
  • Place of Presentation: 滋賀県・大津市
  • Year and Date: 2012-03-18
• [Book] 外来生物-生物多様性と人間社会への影響-2章外来植物による生態系改変とその影響-機能形質に着目したアプローチ- (2011)
  • Author(s): 黒川紘子
  • Publisher: 裳華房