An example of bio-accumulation of radioactive material in Fukushima: According to the following post, wild monkey poops from Namie-city, Fukushima had more than 150,000Bq/kg in terms of radioactive Cs137 & Cs134. Cs137: 133987 Bq/kg Cs134: 25186 Bq/kg K40: 225 Bq/kg The surrounding ground surface was about 500~600cpm.
Nuclear News 23rd Jan 2016 read more »