FIGURE 5.

Bacterial (A) and fungal (B) phylotypes labeled in the methanol treatment of the substrate SIP experiment and their congruent labeling in other treatments of both SIP experiments. Black, LP > 5%; gray, LP < 5%; white, not labeled. The phylotypes that were only labeled in treatments with multi-carbon substrates or in the pH shift SIP experiment are not presented. Cross, additional [¹²C]-methanol supplementation in substrate treatments. Equal colors, the same phylum affiliation. ‘H’ and ‘M,’ ‘heavy’ and ‘middle’ fractions, respectively.