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.
(A) 13C enrichment of phospholipid fatty acids of 13C methane (M), ethane (E), and propane (P) incubations and 12C controls in initial sediment (t0) and at final time points. The 16:1 and 18:1 isomers were not differentiated. The dashed line indicates natural abundance levels of 13C. (B) Proportion of 13C incorporated into each fatty acid.
