Radiocesium contamination of the web spider Nephila clavata (Nephilidae: Arachnida) 1.5 years after the Fukushima Dai-ichi Nuclear Power Plant accident

被引：25

作者：

Ayabe, Yoshiko ^{[1
]}

Kanasashi, Tsutomu ^{[1
]}

Hijii, Naoki ^{[1
]}

Takenaka, Chisato ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Bioagr Sci, Nagoya, Aichi 4648601, Japan

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2014年 / 127卷

关键词：

Nephila clavata; Nuclear power plant accident; Radiocesium; Radioactive contamination; Spider; POPULATIONS; COMMUNITIES;

D O I：

10.1016/j.jenvrad.2013.10.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We measured the concentrations of radiocesium (Cs-134 and Cs-137) in a large web spider, Nephila clavata L. Koch (Nephilidae: Arachnida), collected at three sites at different distances from the Fukushima Dai-ichi Nuclear Power Plant about 1.5 y after the accident in March 2011. The radiocesium concentrations in spiders were highest in a streamside secondary forest 33 km northwest of the power plant: mean a standard deviation of 2.401 +/- 1.197 Bq g(-1) dry for Cs-134 and 3.955 +/- 1.756 Bq g(-1) dry for Cs-137. In a hillside secondary forest 37 km northwest of the power plant, the mean concentrations of Cs-134 and Cs-137 were 0.825 +/- 0.247 Bq g(-1) dry and 1.470 +/- 0.454 Bq g(-1) dry, respectively. In a pine forest 62 km west of the power plant, very low radiocesium concentrations were detected, but in only a few individuals. The concentrations of Cs-134 and Cs-137 in spiders collected at each site tended to be correlated with the air radiation dose rate at each site. Since spiders are key components of food webs in forests, the high concentrations in this species at contaminated sites suggested that the radiocesium from the accident has transferred through food chains and reached to higher trophic level of the food chains. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.

引用

页码：105 / 110

页数：6

共 17 条

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