Expression of physiological and morphological plasticity in response to gap formation in Japanese forest trees

2012 Fiscal Year Final Research Report

• Project/Area Number: 22580170
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Forest science
• Research Institution: Forestry and Forest Products Research Institute
• Principal Investigator: YAMASHITA Naoko 独立行政法人森林総合研究所, 関西支所, 主任研究員 (70353901)
• Co-Investigator(Renkei-kenkyūsha): LEI Thomas 龍谷大学, 理工学部, 教授 (00388159)
• Project Period (FY): 2010 – 2012
• Keywords: 森林生態 / 保護 / 保全 / 林冠ギャップ

Research Abstract

Physiological and morphological responses to canopy gap for tree species commonly found in Japanese satoyama forests were studied. High stem diameter growth was significantly related to high plasticity in leaf morphological and structural traits such as intercellular space, palisade mesophyll layer thickness, leaf area, and leaf weight per unit leaf area. These results suggest that greater leaf-level phenotypic plasticity between shade and gap is critical to the growth and long-term survival of forest tree species in the fluctuating light environment of the satoyama forest.

Research Products

• [Presentation] 里山構成種における葉の形態的可塑性と林冠ギャップへの適応能力 (2012)
  • Author(s): 山下直子・奥田史郎・藤井智之・レイ トーマス
  • Organizer: 森林学会大会研究発表要旨集
  • Place of Presentation: (63:62)
  • Year and Date: 20120000
• [Presentation] Ecology and impact of invasive tree, Bischofia javanica, in the Bonin (Ogasawara) Islands, subtropical Pacific,Japan (2010)
  • Author(s): Yamashita, N.
  • Organizer: 2010 International symposium on monitoring and management of alien invasive species (AIS)
  • Place of Presentation: Taiwan(Proceedings pp. 64-67)
  • Year and Date: 20101101-02
• [Book] Seed and seedling demography of invasive and native trees of subtropical pacific islands. Part II Impact of alien invasive species. In Restoring the oceanic island ecosystem. Impact and management of invasive alien species in the bonin islands (eds.K.Kawakami and I. Okochi) (2010)
  • Author(s): Yamashita, N., Tanaka, N., Hoshi,Y., Kushima, H. and Kamo, K.
  • Total Pages: 93-102
  • Publisher: Springer
• [Remarks] 山下直子(2012) コショウノキが住処を求めて 平成24 年度森林総合研究所関西支所公開講演会要旨集 p2
• [Remarks] 山下直子(2012)人工林に生き残った樹木―コショウノキー森林総合研究所関西支所研究情報105:2
• [Remarks] Lei Thomas、山下直子(2011)里山における二酸化炭素吸収源としての樹木の効果的な管理技術の開発。 里山学研究 自然・歴史・文化と景観 龍谷大学里山学研究センター2010 年度年次報告書 128-129.
• [Remarks] 山下直子(2010)葉と花にユニークな特徴をもつ植物ージンチョウゲ属 森林総合研究所関西支所研究情報96:3
• [Remarks] 山下直子・レイ トーマス(2010)放置された里山林に出現する林内低木種の光環境への適応について 2010 年代のための里山シンポジウムーどこまで理解できたか、どう向き合っていくかー 講演要旨集 p53-54.