a Hydrogen consumption by soils collected from a beech forest, managed grassland and desert biological soil crust. Dotted lines represent atmospheric concentrations of H2 (~0.53 ppmv). Data points depict the mean ± standard deviation. b Michaelis–Menten kinetics of H2 oxidation by the beech forest soil. Best-fit curve was determined using a Michaelis–Menten non-linear regression model. c Alpha diversity (Shannon index) and d beta diversity (Bray–Curtis dissimilatory) of the group 1h [NiFe]-hydrogenase large subunit (hhyL) genes in the soils detected by long-read amplicon sequencing. Analysis of variance with a Tukey’s HSD mean separation was performed across the soil types for the Shannon index; similar letters indicate that no significant difference was observed (p value > 0.05). Data were rarefied; unrarefied comparisons can be found in Fig. S4.