| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
We have monitored fruiting phenology of dominant tree species and seasonal changes of seed predators activity in well and least drained tropical peat swamp forest to reveal the effect of drainage on tropical peat swamp community. The result of the study showed that tha removal rate of model seeds decreased during high water table in both stands, whilst it increased during low water table, indicating that flooding restricted the feeding activity of terrestrial small mammals. The trees in least drained forests fruited during wet seasons in general, whilst that in well drained forests fruited more frequent. Regardless of the expectation, drainage did not have negative effects on fruiting phenology. One possible explanation for the observed pattern is drainage enhance mineralization of peat materials and weaken flooding stress. Anyway further studies are required to test the possible mechanisms and evaluate the risks of fire.
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