| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
I investigated leaf litter break down and utilization by macroinvertebrates in an intertidal estuary, located in the northwestern Seto Inland Sea, Japan. The air-dried reed litter was immediately broken down in the study site. Approximately 20% of the initial weight remained three month after the field experiment. We also investigated macroinvertebrate colonization in a litter bag with plural holes. Decapoda, Amphipoda, and Gastropoda species mainly colonized the litter bags during the year. Carbon and nitrogen stable isotope analysis suggested that the contribution to the macroinvertebrates of leaf litter as food sources was small. My results suggested that leaf litter could supply habitats to macroinvertebrates in an intertidal estuary, although their remaining time was relatively short.
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