Fig. 1
Distribution of populations, genetic diversity and temporal habitat changes of Iberian Arabidopsis thaliana populations. a Geographic distribution of the 278 A. thaliana populations of study across the Iberian Peninsula. Red and blue dots represent populations with zero and non-zero genetic diversity (HS) values, respectively. b Frequency distribution of populations with zero and non-zero HS values as a function of altitude. Mean altitude for both groups of populations is almost identical, as indicated by dashed lines. c Frequency distribution of populations with zero and non-zero HS values. d Frequency distribution of the average percentage change between year intervals for each habitat type. Data from digitalized orthophotographs available from each population. For the sake of clarity, only one X-axis is shown, indicating the accumulation of populations with average percentage changes around zero. The map of Fig. 1a was obtained from the National Center for Geographic Information (CNIG) of Spain