Archaeol: An Indicator of Methanogenesis in Water-Saturated Soils
Figure 3
Concentrations of archaeol and crenarchaeol (μg g−1 dry wt soil; bars; for quantification details refer to Section 2), and acetate (mg L−1; circles) with depth at Caeau Ton-y-Fildre. Black, white, and dark grey bars represent free lipids and ether lipids bound by glycolipid moieties and phospholipid headgroups, respectively, in the case of archaeol; for crenarchaeol, white bars include both simple lipids and glycolipids.
