Fig. 7
From: Adaptation of a microbial community to demand-oriented biological methanation
Microbial food web of a biological methanation (BM) process considering continuous H2-feeding (BM-24/0, blue) and discontinuous H2-feeding (BM-12/12, orange) experiments including in-/organic substrates and intermediates. The size of the boxes represents the abundance of the microbial groups of the last sample of the aforementioned feeding regimes. The full grey arrows depict the main substrate and product of the hydrogenotrophic BM process, whereas the other type of lines (BM-24/0, blue; BM-12/12, orange) are assigned to biomass (dash–dot), monomers/intermediates (dash) and acetate (dot)