2011 Fiscal Year Final Research Report
Expanding of residence time of coastal lagoon water by means of recent sea-level rise and the effect on ecological system
| Project/Area Number |
21340147
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | Shimane University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
IRIZUKI Toshiaki 島根大学, 総合理工学部, 教授 (60262937)
INOUE Mutsuo 金沢大学, 環日本海域研究センター, 助教 (60283090)
SETO Koji 島根大学, 汽水域研究センター, 准教授 (60252897)
TSUJIMOTO Akira 島根大学, 教育学部, 助教 (60570554)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 海面水位変動 / 環境放射能 / ラジウム同位体 / 滞留時間 / 汽水域 / 沿岸生態系 |
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| Research Abstract |
I performed to clarify the water dynamics of coastal lagoon water by measuring the Radium and Radon radioactivity, and confirmed the effectiveness to understand the residence time of water. I recognized, however, some difficulties to overcome a number of sample analyses, because of various environmental factors depending on each other. I could not found clear correlation between meiobenthic foraminiferal ecology and the water residence time. In contrast to a prerequisite hypothesis that the recent sea-level rise making the lagoon water stagnant, still needs to be re-examined, due to recent change of foraminiferal assemblage.
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