Comparison of radiocesium and stable isotope ratios of carbon and nitrogen among three stocks of Pacific cod (Gadus macrocephalus) around Hokkaido, Japan
Comparison of radiocesium and stable isotope ratios of carbon and nitrogen among three stocks of Pacific cod (Gadus macrocephalus) around Hokkaido, Japan
复制标题
日本北海道附近三种太平洋鳕鱼种群的放射性铯和碳氮稳定同位素比值比较
DOI：
10.1016/j.marpolbul.2017.11.029
复制
发表时间：
2018
影响因子：
5.8
通讯作者：
Endo Tetsuya
中科院分区：
文献类型：
--
作者：
Nakamura Tsugiya;Tanaka Toshiyasu;Kimura Osamu;Fujii Yukiko;Haraguchi Koichi;Endo Tetsuya
北海道是日本最北端的主要岛屿，被北太平洋、日本海和鄂霍次克海所包围，三个独立的太平洋鳕鱼种群被认为栖息在这三个地区。位于日本本州岛北部的福岛第一核电站（FDNPP）于2011年发生争议。大部分放射性铯从FDNPP被释放到西北太平洋，在FDNPP事故发生后不久，这些地区的生物群受到严重污染。我们分析了2011年至2015年在北海道附近捕获的太平洋鳕鱼中的放射性铯。放射性铯主要是在北太平洋捕获的鳕鱼中检测到的，而不是在日本海和鄂霍次克海捕获的鳕鱼中。这些结果表明，在北海道附近的太平洋捕获的鳕鱼通过FDNPP的污染区。
Hokkaido, the northernmost of the main islands of Japan, is surrounded by the North Pacific Ocean, the Japan Sea and the Okhotsk Sea, and three independent stocks of Pacific cod are thought to inhabit those three areas. The Fukushima Dai-ichi Nuclear Power Plant (FDNPP), which is located in the north of Honshu, the main island of Japan, was disputed in 2011. Most of the radiocesium from the FDNPP was released into the western North Pacific Ocean, and the biota in those areas were considerably contaminated soon after the FDNPP accident. We analyzed radiocesium in Pacific cod caught around Hokkaido between 2011 and 2015. The radiocesium was predominantly detected in the cod caught in the North Pacific Ocean, and not in those caught the Japan Sea and the Okhotsk Sea. These results suggest that the cod caught in the Pacific Ocean around Hokkaido moved through the contaminated area off the FDNPP.