Development of toxicity test for algae by exposing recalcitrant dissolved organic matter accumulated in lakes
| Project/Area Number |
24510044
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | Lake Biwa Environmental Research Institute |
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Principal Investigator |
HAYAKAWA Kazuhide 滋賀県琵琶湖環境科学研究センター, その他部局等, その他 (80291178)
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| Co-Investigator(Kenkyū-buntansha) |
SUGIYAMA Yuko 兵庫県立大, 環境人間学部, 准教授 (40305694)
TANAKA Hitoshi 埼玉県環境科学国際センター, 水土壌研究領域, 専門研究員 (40415378)
FUJITAKE Nobuhide 神戸大学, 農学研究科(研究院), 教授 (50243332)
MARUO Masahiro 滋賀県立大学, 環境科学部, 准教授 (80275156)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 影響評価手法 / 毒性評価 / 溶存有機物 / 難分解性 / 化学特性評価 / フルボ酸 / 琵琶湖 / 急性毒性 / COD / クラミドモナス / 蛍光スペクトル / フミン物質 / フミン酸 |
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| Outline of Final Research Achievements |
Recalcitrant dissolved organic matter (DOM) is a possible factor of increasing COD in several closed-water areas in Japan, including Lake Biwa. In this study, we conducted to collect fulvic acid in Lake Biwa, and to clarify its chemical properties as a representative of recalcitrant DOM. Furthermore, we examined growth inhibition test of green alga Chlamydomonas, which is one of ecological impact test of chemical substances.
The results of the algae growth inhibition test using Chlamydomonas, the inhibition effect was not observed on the fulvic acid of Lake Biwa. We concluded that the fulvic acid under existing concentration present concentration in the lake was no inhibition effect for aquatic organisms, suggested by the present study and crustaceans and fish inhibition tests in another researches.
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Report
(4 results)
Research Products
(38 results)
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[Journal Article] Seasonal characteristics of surface water fulvic acids from Lake Biwa and Lake Tankai in Japan2012
Author(s)
Fujitake, N., Tsuda, K., Mori, H., Aso S., Kodama, H., Maruo, M., Yonebayashi, K.
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Journal Title
Limnology
Volume: 13
Pages: 45-53
NAID
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[Presentation] Characterization of highly strong metal binding ligands in waters2014
Author(s)
Maruo, M., Obata, H., Mitamura, O., Akatsuka, T., Amahashi, N., Azumi, H.,
Organizer
The 16th International Symposium on River and Lake Environments
Place of Presentation
韓国 春川市 LADENA Resort
Year and Date
2014-08-24 – 2014-08-27
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[Presentation] Development and application of a method for quantitative analysis of aquatic humic substances in clear water2012
Author(s)
Tsuda, K., Takata, A., Sugiyama, Y., Hayakawa, K., Fujitake, N.
Organizer
Association for Sciences of Limnology and Oceanography, Aquatic Sciences Meeting 2012
Place of Presentation
びわ湖ホール
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[Presentation] 琵琶湖水中の水系フミン物質の季節および深度別の変化2012
Author(s)
木田森丸, 高田明弘, 津田久美子, 光嵜克敏, 白井秀門, 北野史子, 原都, 小島礼慈, 杉山裕子, 早川和秀, 藤嶽暢英
Organizer
日本腐植物質学会第28回講演会
Place of Presentation
首都大学東京
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[Presentation] Comparison of Dissolved Organic Matter (DOM) in Lake Biwa Separated by C18 and DAX Solid Phase Extraction
Author(s)
Utsumi, R., Sugiyama, Y., Hayakawa, K., Kitano, F., Kojima, R., Hara, M., Takata, A., Fujitake, N.
Organizer
Association for Sciences of Limnology and Oceanography, Aquatic Sciences Meeting 2012
Place of Presentation
びわ湖ホール
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