Population decline at distribution margins: assessing extinction risk in the last glacial relictual but still functional metapopulation of a European butterfly. C.hero population genetics in French Jura massif

We analyzed patterns of genetic diversity distribution at 817 loci in 136 butterflies from 31 sites using NGS to infer the genetic structure and population size changes overtime, using two methods of demographic inference (SNP frequency spectrum analyses and coalescent ABC inferences). We then characterized the climate and land-use descriptors of C. hero geographic distribution using species distribution modelling (SDM) and ordination method, and compared demographic changes to changes in climatically suitable areas.