| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
Quantifying food web structure is essential to understand food web dynamics and stability. For example, energy flux from the detritus to other organisms in an ecosystem affects food web dynamics. By developing a series of methods for reconstructing food web and applying it to real ecosystem, we tested a hypothesis that the greater diversity of litter consuming detritivores promotes energy flow between the resource and top predators in agricultural ponds. We found that the diversity and abundance of detritivores had a significant positive effect on the relative contribution rate of detritus to the diets of predators, even after confounding effects were controlled for. Our study is the first to demonstrate bottom-up effects of detritivore diversity on energy flow in food webs.
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