FIGURE 4 in Contributions of biogeographical functions to species accumulation may change over time in refugial regions

FIGURE 4 Concentrations of Theodoxus interspecific diversity mapped across the Western Palaearctic using the IDW algorithm. Anatolia shows the highest concentrations of Theodoxus MOTUs. Other regions with more than one Theodoxus MOTUs present are encircled with white‐dashed lines. Bar graphs represent the amount of diversity, indicated by; the number of interspecific MOTUs in each concentrated region, PDand sum ED (see text for details) [Colour figurecanbeviewedat wileyonlinelibrary.com]