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)–(h) Biomass (Total PLFA) and biomarker values for all land-use types. Biomarkers represent selected groups of microorganisms: Saturates, common in many bacteria; Monosaturates, Gram (−) bacteria; Branched, Gram (+) bacteria; 10Me, actinomycetes or sulfate-reducing bacteria (see Results). The ratios 17cy:precursor and 19cy:precursor indicate physiological stress. Note that the scaling of the axes is not the same in all panels. Data are means ± SE (n = 32–358).
