Relationship between seed dispersal pattern and characteristics of seedling regeneration in dipterocarp trees
| Project/Area Number |
16K07513
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Research Collaborator |
Takeuchi Yayoi
Inanaga Michiko
Suzuki Shiori
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 実生動態 / 種子散布 / フタバガキ科 / 実生更新 / 種子散布パターン / 実生定着制限 / 定着制限 / 当年生実生 / 熱帯雨林 / 生態学 / 個体群動態 |
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| Outline of Final Research Achievements |
The patterns in seed and pollen dispersal were estimated using the genetic analysis for two dipterocarp species with different number of large wings. Contrary to the expectations from morphological traits, mean seed dispersal distance of species with three large wings was not larger than that of one with two large wings. Although the maximum pollen dispersal distance was similar in the two dipterocarp species, the frequency of pollen dispersal at a given distance differed between species. 21.5～26.7% of dipterocarp seedlings survived for about four years. Mortality and growth rate were not affected by neither seed nor pollen dispersal distances in seedlings of both dipterocarps, whereas the positive effect of predator satiation was indicated for the survival of dipterocarp seedlings.
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| Academic Significance and Societal Importance of the Research Achievements |
フタバガキ科樹木は東南アジア熱帯雨林の主要な優占種であり、多くの有用材を含む分類群であるため、その更新特性は持続的利用や保全に欠かせない基礎情報である。比較的多くの報告がある花粉散布距離に比べて、種子散布距離の知見は非常に限られているため、本研究の成果は意義深いが、一度の繁殖イベント由来の限られた種のみでの結果であるため、より多くの種を用いた更なる検証が必要である。また、より正確な種子散布距離の推定のために、遺伝実験に用いるべき試料への課題も見つかったことから、今後の発展も望める。
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Report
(4 results)
Research Products
(19 results)
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[Journal Article] Characteristics of wood CO 2 effux in a Bornean tropical rainforest.2016
Author(s)
Katayama, A., Kume, T., Ohashi, M., Matsumoto, K. Nakagawa, M., Saito, T., Kumagai, T., Otsuki, K.
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Journal Title
Agricultural and Forest Meteorology
Volume: 220
Pages: 190-199
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] The population dynamics and biodiversity of insect seed predators in tropical rainforests of Sarawak.2016
Author(s)
Iku Asano, Michiko Nakagawa, Yayoi Takeuchi, Shoko Sakai, Keiko Kishimoto-Yamada, Usun Shimizu-kaya, Fatimah Mohammad, Mohamad Yazid Hossman, Azimah Bunyok, Mohd Yusuf Abd Rahman, Paulus Meleng, Takao Itioka
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Journal Title
Proceedings of the symposium "Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak"
Volume: なし
Pages: 179-186
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Depth of water uptake and flowering frequency of dipterocarp trees.2016
Author(s)
Kazuma Kawahara, Naoko Matsuo, Shoko Sakai, Michiko Nakagawa
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Journal Title
Proceedings of the symposium "Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak"
Volume: なし
Pages: 124-131
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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