Fig. 2. Taxonomic diversity of 15N-incorporators and nifH-containing taxa identified via 15N-SIP and DNA sequencing, respectively.
a Taxa listed by class for Proteobacteria and phylum for all other groups. b Deltaproteobacteria 15N-incorporators and nifH ASVs shown separately to accommodate for different vertical axis scales. The fraction of sequences identified as Desulfobacterales (dots), Desulfuromonadales (stripes), and other Deltaproteobacteria (no pattern) is additionally indicated. n.d. = not detected.