Location of Eremias argus study sites on Doriseom Island a location of the survey site on a map of South Korea b Doriseom Island is at the confluence of the Namhangang River and the Cheongmicheon Stream c the 96 sites where E. argus was found are indicated with white cross symbols (Bing Maps, working with QGIS 3.22.16) d the zones where E. argus occurred frequently (frequent zone, hereafter F zone) and rarely (rare zone, hereafter R zone) were determined. F zone sites are marked with yellow points (n = 78), while R zone sites are marked with mint-colored points (n = 60). At each point, the vegetation composition and soil environmental factors were surveyed.