Fig. 6
From: The role of isolation on contrasting phylogeographic patterns in two cave crustaceans
Divergence time estimates (x axis in thousands of years) of Niphargus hrabei populations (calculated with a multi-locus coalescent model in *BEAST; outgroups not shown) and the distribution of its populations with relative COI haplotype frequencies in our three main Hungarian sites and neighbouring populations. Phylogenetic and population tree analyses do not support any evident genetic structuring between cave and surface populations