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アイテム
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Radiological impact of TEPCO's Fukushima Dai-ichi Nuclear Power Plant accident on invertebrates in the coastal benthic food web
https://repo.qst.go.jp/records/46827
https://repo.qst.go.jp/records/468277ffc7561-a4c4-4beb-8cfb-2cceb9b2e41c
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-10-15 | |||||
タイトル | ||||||
タイトル | Radiological impact of TEPCO's Fukushima Dai-ichi Nuclear Power Plant accident on invertebrates in the coastal benthic food web | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Sohtome, Tadahiro
× Sohtome, Tadahiro× Wada, Toshihiro× Mizuno, Takuji× Nemoto, Yoshiharu× Igarashi, Satoshi× Nishimune, Atsushi× 青野, 辰雄× Ito, Yukari× Kanda, Jota× Ishimaru, Takashi× 青野 辰雄 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Radioactive cesium (134Cs and 137Cs) concentrations in invertebrates of benthic food web (10 taxonomic classes with 46 identified families) collected from wide areas off Fukushima Prefecture (3e500 m depth) were inspected from July 2011, four months after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, to August 2013 to elucidate time-series trends among taxa and areas. Cesium-137 was detected in seven classes (77% of 592 specimens). Higher 137Cs concentrations within detected data were often found in areas near or south of the FDNPP, which is consistent with the reported spatial distribution of 137Cs concentrations in highly contaminated seawater and sediments after the FDNPP accident. Overall 137Cs concentrations in invertebrates, the maxima of which (290 Bq kg␣1-wet in the sea urchin Glyp- tocidaris crenularis) were lower than in many demersal fishes, had decreased exponentially with time, and exhibited taxon-specific decreasing trends. Concentrations in Bivalvia and Gastropoda decreased clearly with respective ecological half-lives of 188 d and 102 d. In contrast, decreasing trends in Mala- costraca and Polychaeta were more gradual, with longer respective ecological half-lives of 208 d and 487 d. Echinoidea showed no consistent trend, presumably because of effects of contaminated sediments taken into their digestive tract. Comparison of 137Cs concentrations in the invertebrates and those in seawater and sediments suggest that contaminated sediments are the major source of continuing contamination in benthic invertebrates, especially in Malacostraca and Polychaeta. | |||||
書誌情報 |
Journal of Environmental Radioactivity 巻 138, p. 106-115, 発行日 2014-09 |
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出版者 | ||||||
出版者 | Elsevier | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0265-931X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | DOI: 10.1016/j.jenvrad.2014.08.008 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.sciencedirect.com/science/article/pii/S0265931X14002410#MMCvFirst | |||||
関連名称 | http://www.sciencedirect.com/science/article/pii/S0265931X14002410#MMCvFirst |