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Dynamics of $$^{137}$$Cs in water and phyto- and zooplankton in a reservoir affected by the Fukushima Daiichi Nuclear Power Plant Accident

Tsuji, Hideki*; Nakagawa, Megumi*; Iijima, Kazuki  ; Funaki, Hironori ; Yoshimura, Kazuya  ; Sakuma, Kazuyuki   ; Hayashi, Seiji*

Lake water, phytoplankton and zooplankton were sampled by a total of 12 quarterly surveys from August 2014 to May 2017 at a dam lake in the Fukushima nuclear disaster area, and variations of dissolved form of $$^{137}$$Cs and planktonic $$^{137}$$Cs were observed. Seasonal variations in dissolved $$^{137}$$Cs concentration with high in summer and low in winter were observed in the upstream, midstream and downstream areas of the lake, but no seasonal or site specific differences in planktonic $$^{137}$$Cs concentrations and dominant species were found. The amount of planktonic form of $$^{137}$$Cs in the water was less than 1.4% of the total $$^{137}$$Cs in the lake water, therefore the effect of plankton on the dynamics of $$^{137}$$Cs in the lake was minimal.

Language

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English

Journal

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Global Environmental Research (Internet)

Volume

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24

Number

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2

Pages

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p.115 - 127

Publication Year/Month

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2021/06

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Held date

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Patent information

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DOI for research data

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Keywords

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福島第一原子力発電所事故; 放射性セシウム; ダム湖; Fukushima Daiichi Nuclear Power Station Accident

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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国立環境研究所

Accesses

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- Accesses

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