2010 Fiscal Year Final Research Report
Modeling of social-ecosystems based on geographic information and multi-stable theory in lake ecosystems
| Project/Area Number |
20570018
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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 |
Ecology/Environment
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| Research Institution | Yokohama National University |
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Principal Investigator |
AMEMIYA Takashi Yokohama National University, 環境情報研究院, 准教授 (60344149)
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| Co-Investigator(Kenkyū-buntansha) |
SADOHARA Satoru 横浜国立大学, 環境情報研究院, 教授 (90178799)
MATSUDA Hiroyuki 横浜国立大学, 環境情報研究院, 教授 (70190478)
INAMORI Yuhei 福島大学, 共生システム理工学類, 教授 (10142093)
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| Co-Investigator(Renkei-kenkyūsha) |
ITHO Kiminori 横浜国立大学, 工学研究科, 教授 (40114376)
KANEKO Nobuhiro 横浜国立大学, 環境情報研究院, 教授 (30183271)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 生態系 / 数理生態学 |
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| Research Abstract |
Based on the multi-stable theory in ecosystems, this study firstly shows a restoration technique of eutrophicated lakes by using a mathematical model that takes into account biological interactions in lake ecosystems. Secondly, omprehensive-GIS (Geographic Information System) analyses of forty-year social and environmental data in basins of lakes Sagami and Tsukui in Kanagawa prefecture revealed a prime factor for algal blooms in these lakes. Namely, one of the main nutrients, nitrogen, may originate not from sewage in the basins but from atmosphere. Taking into account the above results, a restoration technique by using biological interactions is very effective especially for lakes that are unavoidable for eutrophication due to social and environmental circumstances.
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[Journal Article] River Water Quality Analysis of Hadano Basin and its Relationship with Nonpoint Sources of Pollution
Author(s)
Shrestha, G., Sadohara, S., Maunaga, S., Kondo, H., Yoshida, S., Sato, Y.
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Journal Title
Journal of Water and Environment Technology in press
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