Genomic amplicon data of supraglacial samples for the 16S gene
Sample extracted using the PowerSoil extraction kit. The extracted DNA was amplified using prokaryotic primers targeting the  16S rRNA gene (341F: 5-CCTAYGGGRBGCASCAG-3 and 8065R: 5 GGACTACNNGGGTATCTAAT-3; (Hansen et al., 2012)). The samples were pooled equimolarly, and the final library was sequenced on an Illumina MiSeq using the V2 500-cycle kit (Illumina Inc., San Diego, California, USA), generating 2250 bp reads.