| Project/Area Number |
21770031
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Ecology/Environment
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
OGAWA NanakoO. Japan Agency for Marine-Earth Science and Technology, 海洋・極限環境生物圏領域, 技術研究主任 (80359174)
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|---|
| Project Period (FY) |
2009 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 生態系 / 近過去生態系変動 / アミノ酸 / 窒素安定同位体比 / 食物連鎖 / 栄養段階 / 化合物レベル安定同位体比 / 標本試料 |
|---|
| Research Abstract |
To verify reliability of the method as a tool for studying ecosystems in the past, compound-specific nitrogen isotopic ratios of amino acids (δ^<15>NAA) were measured for various types of samples. We have determined δ^<15>NAA values for chemical-fixed specimens, shell and soft tissue organics of snails and bivalves, and long-stored biological specimens from Lake Biwa and Lake Baikal. These results strongly suggested that the δ^<15>NAA method was an effective and a useful tool for reconstructing the past ecosystems.
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