Figure 4. Bacterial community differences across each experimental treatment, and comparisions to soil-only pots. Non metric multidimensional scaling (NMDS) plot showing bacterial community composition differences across treatments in (a) sample types from plant-present pots, and (b) soil-only containing low versus high aridity soils. NMDS ordinations are based on Bray-Curtis distances (sample library sizes were rarified to 18,738 reads). Each point represents a sample, and closer points have more similar communities.