DATA ACCESSIBILITY STATEMENT
Raw metabarcode data have been deposited at the NCBI Sequence Read Archive (SRA) under BioProject xxxxxxx. Input files for all analyses are available for download from the Dryad Digital Repository (https://doi.org/xx.xxxx/dryad.xxxxxxxxx), including raster files of interpolated WorldClim and ENVIREM variables and distribution of Quercus alnifolia patches. Upon acceptance, data will be archived in the above-commented repositories and the Data Accessibility Statement completed.