Fig. 2: Multivariate analysis of micro-eukaryotic communities based on OTUs matrix.

a NMDS of community compositions of the recent (blue triangles) and past (red circles) samples with 95% confidence ellipses represented for each group. Gray lines connect recent and past samples from the same lake. Stress = 0.24. b Distribution of Bray–Curtis index values computed for each lake between recent and past samples. c Distribution of the distances between samples and group geometric median for recent (blue) and past (red) samples.