Genomic evidence of survival near ice sheet margins for some, but not all, North American trees.

ABSTRACT: Temperate species experienced dramatic range reductions during the Last Glacial Maximum, yet refugial populations from which modern populations are descended have never been precisely located. Climate-based models identify only broad areas of potential habitat, traditional phylogeographic studies provide poor spatial resolution, and pollen records for temperate forest communities are difficult to interpret and do not provide species-level taxonomic resolution. Here we harness signals of range expansion from large genomic datasets, using a simulation-based framework to infer the precise latitude and longitude of glacial refugia in two widespread, codistributed hickories (Carya spp.) and to quantify uncertainty in these estimates. We show that one species likely expanded from close to

SUBMITTER: Bemmels JB 

PROVIDER: S-EPMC6486725 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature