Fig. 1: Effect of drought and future climate conditions on the composition of total and growing bacterial and archaeal communities.

Principal component analysis (PCA) of total (a) and growing (b) bacterial and archaeal communities (n = 4 replicates) on centered log-ratio transformed amplicon sequence variant (ASV) absolute abundances. Absolute abundances were calculated by multiplying ASV-specific amplicon sequencing reads with 16 S rRNA gene copies inferred by digital droplet PCR. Absolute abundances were agglomerated over the density fractions of a sample gradient. Statistics from two-way permutation-based multivariate analysis of variance (PERMANOVA) testing a full two factorial design (Drought Yes, Drought No, Climate Ambient, Climate Future) are provided as inset panels. Source data are provided with this paper.