Asahi Shimbun is reporting that wild mushrooms are being found to be highly contaminated outside Fukushima prefecture. The mushrooms have been found in Aomori, Nagano and Shizuoka prefectures at locations of 200-350km from the nuclear disaster site.
This is leading to more worries and lost sales as stores and restaurants pull the popular fall delicacy off the menu. Mushrooms in Tochigi were found with 3000 bq/kg and 2100 bq/kg in Nagano. The levels have actually increased rather than decreased with experts citing rain and falling leaves as a possible cause.
This problem will likely not go away any time soon. In Germany, over 25 years after Chernobyl and 1500km away wild mushrooms are still highly contaminated as are the wild boar that eat them. Cesium tends to accumulate in the soil and mushrooms hyper concentrate cesium. The levels will only go down as the 30 year half life of the cesium gradually decreases the levels. As seen in Germany this will take a long time.
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