Fig. 1: Bacterial community structure and diversity of benthic freshwater communities on tiles under ambient (A; green symbols), elevated nutrients (N; yellow symbols), elevated salinity (S; blue symbols) and combined elevated salinity and elevated nutrients (SN; purple symbols) treatments 1, 7, 30 and 90 days after tiles with established microbial communities were deployed in the treated ponds.

A nMDS ordination on square root transformed Bray Curtis distances calculated on absolute abundances of ASVs (stress = 0.192). B Mean Shannon’s diversity calculated on absolute ASV abundances ( ± SE) (n = 3, except SN treatment on Day 7 and Day 30 where n = 4). An nMDS combining points from samples at each time into one panel is found in Supplementary Fig. 4.