Evidence for admixture and rapid evolution during glacial climate change in an alpine specialist

The pace of current climate change is expected to be problematic for alpine flora and fauna, as their adaptive capacity may be limited by small population size. Yet despite substantial genetic drift following post-glacial recolonization of alpine habitats, alpine species are notable for their success in surviving highly heterogeneous environments. Population genomic analyses demonstrating how alpine species have adapted to novel environments with limited genetic diversity remain rare, yet are important in understanding the potential for species to respond to contemporary climate change. In this study, we explored the evolutionary history of alpine ground beetles in the Nebria ingens complex, including the demographic and adaptive changes that followed the last glacier retreat. We first tested alternative models of evolutionary divergence in the species complex. Using the millions of genome-wide SNP markers from hundreds of beetles, we found evidence that the Nebria ingens complex has be..., , , # README: Evidence for admixture and rapid evolution during glacial climate change in an alpine specialist

[https://doi.org/10.5061/dryad.0gb5mkm6j](https://doi.org/10.5061/dryad.0gb5mkm6j)

This readme file contains catalog and instructions about how we prepared and analyzed the data in our study entitled \"Evidence for admixture and rapid evolution during glacial climate change in an alpine specialist\". In this study, we collected genomic data from 382 Nebria ingens complex beetles throughout the Sierra Nevada in California. We first reconstructed the evolutionary history of this species complex including the formation of admixture population and more recent post-glacial recolonization to the high elevation habitats. We also performed genome scan of selection and genotype environment association to detect molecular adaptation and genes associated with the alpine environments.

This readme file includes two parts: data and scripts. Data section shows a list of files in this dryad repos...