Fig. 2From: The microbiota characterizing huge carbonatic moonmilk structures and its correlation with preserved organic matterBoxplots of the bulk carbon (𝛿13C) isotope composition of moonmilk speleothem parts, bedrock, and aboveground soil from Grotta Nera. Boxplots show the ranges, lower and upper quartiles (Q1, Q3), and the median (Q2). Boxplots with different capital letters indicate statistical differences (ANOVA; Means compared using Tukey test, p = 0.05)Back to article page