Fig. 4From: Genomic profiling of Nitrospira species reveals ecological success of comammox NitrospiraPrincipal component analysis based on the centered-log transformed abundance of Nitrospira species across 598 metagenomes. Left: plot of the metagenomes; 95% confidence ellipses are shown. Right: plot of the Nitrospira species. The contributions of PC1 (horizontal axis) and PC2 (vertical axis) are 21% and 12%, respectivelyBack to article page