Fig. 1
From: Inferring the demographic history of Japanese cedar, Cryptomeria japonica, using amplicon sequencing

Natural distribution of C. japonica in Japan (filled-in black area) (Hayashi 1951) and the locations of the four populations surveyed in this study. The dotted line indicates the coastline ca. 18,000 years ago. Areas shaded in bold or within thin diagonal lines indicate established refugia (Izu Peninsula, Wakasa Bay, Oki Island, and Yakushima Island) and probable refugia, respectively, at that time (Tsukada 1986)