Fig. 3From: New microbiological insights from the Bowland shale highlight heterogeneity of the hydraulically fractured shale microbiomeTemporal and geographical patterns across shale formations. A Chloride concentration in flowback and produced fluids across shales. B Observed ASVs and C Shannon values variation in function of chloride concentration. D Boxplot comparison of observed ASVs and E Shannon (H′)Back to article page