Data from: The crested newt Triturus cristatus recolonized temperate Eurasia from an extra-Mediterranean glacial refugium

We assess the role of the Carpathians as an extra-Mediterranean glacial
refugium for the crested newt Triturus cristatus. We combine a multilocus
phylogeography (one mitochondrial protein-coding gene, three nuclear
introns, and one major histocompatibility complex gene) with species
distribution modelling (projected on current and Last Glacial Maximum
climate layers). All genetic markers consistently show extensive genetic
variation within and genetic depletion outside the Carpathians. The
species distribution model suggests that most of the current range was
unsuitable at the Last Glacial Maximum, but a small suitable area remained
in the Carpathians. Triturus cristatus dramatically expanded its
postglacial range, colonizing much of temperate Eurasia from a glacial
refugium in the Carpathians. Within the Carpathians, T. cristatus
persisted in multiple geographically discrete regions, providing further
support for a Carpathian ‘refugia within refugia’ scenario.