Figure 1

Correlations between lake size and (a) heterozygote deficiencies (f) (b) variance in f across six microsatellite loci. R is Spearman's non-parametric correlation coefficient. A log-linear curve was fitted on (b). Open circles are from Castric et al (2001) from which only populations with n > 20 were included, and black circles are additional data from this study.