Fig. 4: OTU-specific shifts in the median atom fraction excess (13C) of OTUs with 90% confidence interval (CI).

Individual points represent EAF values of specific OTUs, which are colored by Phylum for qSIP incubations that did not (A–C), or did (D–F), receive H2. The error bars correspond to 90% CI across three biological replicates. OTUs that do not have a 90% CI overlapping with 0 are considered to be 13C labeled.