| Project/Area Number |
23380087
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Akita Prefectural University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SHIBATA Mitsue 独立行政法人森林総合研究所, 東北支所, グループ長 (10343807)
HOSHINO Daisuke 国際農林水産業研究センター, 林業領域, 主任研究員 (60391182)
MATSUSHITA Michinari 独立行政法人森林総合研究所, 林木育種センター, 研究員 (70624899)
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| Co-Investigator(Renkei-kenkyūsha) |
MASAKI Takashi 独立行政法人森林総合研究所, 森林食生領域, 領域長 (60353851)
OSUMI Katsuhiro 鳥取大学, 農学部付属フィールドサイエンスセンター, 教授 (60353611)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2011: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Keywords | 成長関数 / 個体差 / 偶然性 / 生存関数 / 更新ニッチ / 成長と生存のトレードオフ / 長期センサスデータ / 光依存性 / 近傍個体との競争 / 中立理論 / 種多様性 / 確率的偶然性 / 種の番付の逆転 / 温帯混交林 / 林冠ギャップ / 土石流堆積 / ハビタット選好性 / ニッチ分割 / 更新 / 稚樹バンク / 種子散布制限 / 発芽条件 / 撹乱頻度 / 河川撹乱 / 景観スケール |
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| Outline of Final Research Achievements |
A recently proposed biodiversity theory, neutral theory of biodiversity, assumes seed-dispersal limitation and competitive equivalence among individuals in species-rich communities, which we tested in this project. In a temperate riparian mixed forest, sapling habitat segregation was found, as well as weak seed dispersal limitations, suggesting classical niche partitioning. Results of analysis of neighborhood competition, in which species-based prediction via competitive ranks and individual match-ups were compared, provided partial support for the competitive equivalence and/or stochastic nature of among-species competition in this community.
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