Figure 5.

Univariate plots showing patterns of isolation by distance, i.e. relationships between the geographical distance between pairs of sampling sites and a measure of genetic dissimilarity [F_st/(1 − F_st)]. Relationships are shown for each species [(A) Leuciscus cephalus; (B) Leuciscus leuciscus; (C) Gobio gobio; (D) Phoxinus phoxinus] and each landscape (continuous landscape, white dots; fragmented landscape, black dots) separately. Continuous lines indicate significant univariate relationships (P < 0.05; see Table 3), while dotted lines are not significant.