Relative abundance of the ten most abundant microbial phyla and Venn diagrams showing shared OTU diversity among the six samples. (a) Relative abundance for each sample is shown out of 100%. Bacterial phyla are coloured according to the legend on the right. (b) Relative abundance for each sample is shown out of 100%. Fungal phyla are coloured according to the legend on the right. (c) Bacterial OTUs and (d) fungal OTUs that were shared among samples.