Fig. 5

Relative abundance of prokaryotic phyla (A), classes (B), orders (C), and families (D) in each sample representative of the apical (AM-1, -2, -3), core (CM-1, -2, -3), lateral parts (LM-1, -2, -3) of the three different moonmilk structures, the bedrock (Rk-1, -2, -3), and the waters (Wt-1, -2, -3). Prokaryotic phyla with abundances > 1% (A), and prokaryotic classes (B), orders (C), and families (D) with abundances > 5% in at least one sample are displayed in the histograms. “Others” include low abundant taxa (phyla < 1%; classes, orders, and families < 5%)