2009 Fiscal Year Final Research Report
Long-term dynamics of phytoplankton communities in brackish Lakes Shinji and Nakaumi.
| Project/Area Number |
19510031
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | Shimane University |
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Principal Investigator |
OHTANI Shuji Shimane University, 教育学部, 教授 (50185295)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 生態系影響評価 / 汽水域 / 宍道湖・中海 / 植物プランクトン / 群集 / 長期動態 |
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| Research Abstract |
1) Samples of Lakes Shinji and Nakaumi from 1960's stored in the laboratory were arranged and put in the specimen boxes. 2) I taxonomically examined these samples, and changed species names and occurrences for several species. Cell number of Prorocentrum minimum causing red tides in Lake Nakaumi gradually decreased after 2005. A minute diatom, Chaetoceros minimus was firstly identified by SEM observation. 3) M. contortum and other several species showed seasonal changes of occurrence. 4) Four culture strains were isolated for a research of mold smells in Lake Shinji. 5) I prepared to show photos and descriptions about 180 species of phytoplankton of Lakes Shinji and Nakaumi in a homepage.
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