FIG 3.
Carbon and hydrogen cycling capacity in the microbial community. Arrow thickness represents the percentage of genes involved in that pathway. Methanotrophy, 13.1%; methanogenesis, 1%; hydrogen oxidation, 3.5%; serine pathway, 2.5%; ribulose monophosphate (RuMP), 0.3%; reductive pentose phosphate pathway (also called Calvin-Benson-Bassham cycle), 1%; Wood-Ljungdahl pathway, 1%; TCA cycle, 9.1%; oxidative phosphorylation, 18.9%.