| Project/Area Number |
07458121
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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 |
Environmental dynamic analysis
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
YUMOTO Takakazu (1997) KYOTO UNIVERSITY,Center for Ecological Research, Assoc.Prof., 生態学研究センター, 助教授 (70192804)
井上 民二 (1995-1996) 京都大学, 生態学研究センター, 教授 (90109041)
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| Co-Investigator(Kenkyū-buntansha) |
KATO Makoto Department of Natural Environment Sciences, Faculty of Integrated Human Studies,, 総合人間学部, 助教授 (80204494)
HIGASHI Masahiko KYOTO UNIVERSITY,Center for Ecological Research, Prof., 生態学研究センター, 教授 (40183917)
湯本 貴和 京都大学, 生態学研究センター, 助教授 (70192804)
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥2,700,000 (Direct Cost: ¥2,700,000)
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| Keywords | tropical rainforest / diperocarp forest / environmental fluctuation / pollination / El Nino / plant-animal interaction / genetic stucture / breeding system / 混交フタバガキ / 個体群動態 |
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| Research Abstract |
We set up a Data Base with formulated time-series data which have been made by individual researchers without standardization. We formulated the time-series of meteorological data which were obtained in Lambir Hills National Park, Sarawak, Malaysia, and the data on plant phenology (flushing, flowering and fruiting) with ca.500 individuals of plants observed bimonthly and those'on insect catch by light-trap monthly during four years, to analyze the seasonality and periodicity by spectrum analysis, factor analysis and so on. Especially, we developed the protocol to determine the climatic factors to explain the fruiting and flowering phenomena. As the result, we discovered that the dry spell caused by El Nino Southern Oscillation can trigger the flowering of many trees in the dipterocarp forest in South-east Asia where no seasonal rainfall and fluctuation of temperature are detected.
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