Fig. 3

Differentially abundant bacterial and archaeal classes identified by Corncob. Only classes that were differentially abundant between the surface and subsurface layers and between the subsurface and deep layers were highlighted here. The blue lines refer to taxa with significantly increased abundance, the red lines refer to taxa with significantly decreased abundance, while the grey lines refer to taxa with no differential abundance compared to the baseline. There were no differentially abundant fungal classes identified across the three different sediment layers