Figure 1

Numbers of intertidal species and the relative population densities of the rock shell (Thais clavigera) and dog whelk (Nucella freycineti) observed during surveys in 2012 along the coast of northeastern Japan.
Dotted circle indicates a radius of 20 km from the Fukushima Daiichi Nuclear Power Plant (FDNPP) in Fukushima Prefecture. Purple star marks the location of FDNPP. Red vertical bars on graphs and red dots on map indicate sites located within the 20-km radius of FDNPP. *The partial map of Japan in this figure was modified by the authors from the map of Japan at the following website: http://www.freemap.jp/item/japan/japan1.html.