Fig 1.

Shifts in the diversity and composition of the microbial community under the NH₃ stress. (A) Mantel test of environmental drivers of the microbial community and its subcommunities (*P < 0.05 and **P < 0.01). (B) Taxonomic composition of the microbial community at the phylum level under the NH₃ gradient, only the top ten phyla. (C) Trends in the diversity of the microbial community with NH₃. (D) Linear regression between the “Bray-Curtis” similarity distances of community and the Euclidean distances of NH₃.