Effects of forest fragmentation to hybridization of dipterocarp trees
| Project/Area Number |
24688017
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
Tanaka Kenzo 国立研究開発法人 森林総合研究所, 植物生態研究領域, 主任研究員 (30414486)
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| Research Collaborator |
ICHIE Tomoaki
KAMIYA Koichi
NANAMI Satoshi
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
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| Keywords | 熱帯林 / 東南アジア / フタバガキ / 雑種 / 光合成 / Shorea / 浸透交雑 / 断片化 / 劣化 / フタバガキ科 / サラノキ / 保全 / フタバガキ科樹木 / マレーシア / Shorea属 / ブキティマ / 塩基配列 |
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| Outline of Final Research Achievements |
Although natural hybridisation between dipterocarp trees is considered rare, we found many putative dipterocarp hybrids (genus Shorea spp.) in a forest fragment in Singapore. We analysed seedling survival and growth rates in relation to environmental variables for S. curtisii, S. leprosula and hybrids of the two species. Hybrids were more frequent at the seedling stage than at the mature stage. F1 individuals had growth and survival rates comparable to their parent species, with the exception of higher growth rates in S. leprosula. Our results showed that hybrid F1 seedlings lacked obvious heterosis, and might therefore have similar fitness to that of parent species for the present forest environment. We also found more frequent interspecific hybridization in fragmented forests than non-disturbed forests with large area. This indicates that forest fragmentation may accelerate hybridization between dipterocarps tree species.
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Report
(5 results)
Research Products
(30 results)
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[Journal Article] Aboveground and belowground biomass in logged-over tropical rain forests under different soil conditions in Borneo2015
Author(s)
Kenzo, T., Furutani, R., Hattori, D., Tanaka, S., Sakurai, K., Ninomiya, I., Kendawang, J.J.
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Journal Title
Journal of Forest Research
Volume: 20
Issue: 1
Pages: 197-205
DOI
Related Report
Peer Reviewed
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[Journal Article] Demographic history of Shroea curtisii (Dipterocarpaceae) inferred from chloroplast DNA sequence variations2011
Author(s)
Kamiya K., Nanami S., Tanaka K., Yoneda R., Diway B., Chong L., Azani M., Majid N., Lum S., Wong K., Harada K.
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Journal Title
Biotropica
Volume: (印刷中)
Issue: 5
Pages: 577-585
DOI
Related Report
Peer Reviewed
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