Climate-induced range shifts drive adaptive response via spatio-temporal sieving of alleles

This research investigates how climate-induced range shifts affect adaptation in species. Using whole-genome re-sequencing of *Dianthus sylvestris*, the study reconstructs the species' past neutral and adaptive landscape shaped by Quaternary glacial cycles. It reveals that adaptive responses emerged concurrently with post-glacial range shifts, driven by the heterogeneous sieving of adaptive alleles across space and time as populations expanded from glacial refugia. The findings highlight the interplay of migration and adaptation under past climate-induced range shifts and its importance in understanding current spatial patterns of adaptive variation.

Hirzi Luqman, Daniel Wegmann, Simone Fior, Alex Widmer