Fig. 5

Aitchison compositional biplots for a bedrail, b keyboard, and c sink samples. Color denotes renovation stages (before closure, purple; after closure, red; before opening, blue; after opening, orange). Arrows denote important taxa with regard to sample clusters. Significance determined by ANOSIM with 999 permutations for renovation stages and denoted in the corner of each panel *p < 0.05