| Budget Amount *help |
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2009: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2008: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2007: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Research Abstract |
During atmospheric nuclear weapon testing, large amounts of ^<14>CO_2 were produced in the atmosphere. Since the end of atmospheric testing after the nuclear test ban treaty in 1963, ^<14>C concentrations from nuclear tests in the atmosphere have declined. Recent photosynthetic products have A ^<14>C values equal to contemporary atmospheric CO_2. The present study has shown that this unique trend can be used to study turnover of carbon through food webs both in aquatic and terrestrial ecosystems.
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