Figure 2.

Akaike's information criterion (AIC) for demographic models of the lineage split between the campions Silene dioica and S. latifolia in four scenarios: strict isolation (SI), isolation with migration (IM), secondary contact (SC) and ancient migration (AM). Models contained no further parameters (“basic”), allowed for population expansion (“exp”) or included heterogeneity in migration rate (“hm”), effective population size (“hn”) or both parameters (“hmhn”). “hm” and “hmhn” models were not calculated for the SI scenario which does not include any migration