Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Taxon-specific shifts in the median atom fraction excess (13C) of OTUs with 90% confidence intervals. OTUs are color-coded by phylum. Excess atom fractions were caused by 13C assimilation from added 13C-labeled bicarbonate (A) or 13C-labeled organic matter (B). OTUs that do not overlap with zero are considered to be 13C labeled.
