Performance Analysis and Microbial Community Evolution of In Situ Biological Biogas Upgrading with Increasing H₂/CO₂ Ratio

Figure 3

Nonmetric multidimensional scaling plots based on Bray–Curtis distances of the bacterial (a) and archaeal (b) communities at ASV level in R1 (light grey) and in R2 (dark grey).

(a)

(b)