This repository contains the raw data, phylogenetic files, and analysis code for the manuscript "Thermal filtering reveals a cryptic reservoir of thermotolerant yeasts in Sub-Antarctic soils." The dataset includes: Raw growth data: Thermal growth curves and measurement data for all isolated yeast strains. Phylogenetic files: Sequence alignments and phylogenetic tree files used for taxonomic characterization. Analysis scripts: R and Python code used for statistical processing, thermal niche modeling, and figure generation. These files provide the necessary resources to replicate the study's findings regarding thermotolerant yeast reservoirs in Sub-Antarctic environments.