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Journal Articles

$$^{137}$$Cs concentrations in foliose lichens within Tsukuba-city as a reflection of radioactive fallout from the Fukushima Dai-ichi Nuclear Power Plant accident

Omura, Yoshihito*; Matsukura, Kimiyo*; Abe, Junichi*; Hosaka, Kentaro*; Tamaoki, Masanori*; Dohi, Terumi; Kakishima, Makoto*; Seaward, M. R. D.*

Journal of Environmental Radioactivity, 141, p.38 - 43, 2015/03

 Times Cited Count:12 Percentile:35.42(Environmental Sciences)

$$^{137}$$Cs concentrations in ten species of foliose lichens collected within Tsukuba-city in August 2013 ranged from 1.7 to 35 kBq/kg. The relationships between $$^{137}$$Cs in two dominant species, Dirinaria applanata and Physcia orientalis, and the air dose rate ($$mu$$Sv/h) at the sampling sites were investigated. $$^{137}$$Cs in P. orientalis measured about 1 year after the Fukushima nuclear accident was correlated (r$$^{2}$$=0.80) more closely with the air dose rate than those measured after about 2 years (r$$^{2}$$=0.65), possibly demonstrating its continued value as a biomonitor to reflect ambient fall-out levels. In contrast, those of Dirinaria applanata were not correlated with the air dose rate in either year.

Oral presentation

Can fungal spores explain atmospheric resuspension of radiocesium during warm season in Fukushima forest area?

Kita, Kazuyuki*; Hayashi, Naho; Igarashi, Yasuhito*; Hama, Kenzo*; Zaizen, Yuji*; Sekiyama, Tsuyoshi*; Adachi, Koji*; Yoshida, Naohiro*; Toyoda, Sakae*; Hosaka, Kentaro*; et al.

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