Fig. 1

Geographic location and vegetation type of A. thaliana populations with low (AGU, BON, and CAI) and high (MAR, MDC, and POB) genotypic and ecological diversity in edge and core environments, respectively. Upper panels depict the regional-scale proportion of suitable and unsuitable area (50 km radius) around each population estimated by pooling vegetation types with A. thaliana occurrences using the CORINE Land Cover 2000 database. Population maps are digitized aerial orthophotographs indicating vegetation types: forests (dark green), scrubland (light green), dry riverbeds (blue), boulders (grey), paths, and roads (orange). The location of sampled individuals for seeds and spots to estimate above and belowground abundance is indicated. Dot size is proportional to abundance. Scale bars indicate 100 m