Fig. 1
From: Microbial life in 25-m-deep boreholes in ancient permafrost illuminated by metagenomics
Alpha diversity measured by Shannon and Simpson indexes (A) and NMDS ordination plot (B) based on 16S rRNA gene amplicon sequencing for two replicates. Unique shape was assigned to borehole AL1_15 (circle) and borehole CH1_17 (triangle). Samples from different depths were distinguished by color. FP—freshwater permafrost; BP—brackish permafrost; MP—marine permafrost; following number indicates depth