Fig. 4.

Variation in community composition of fungal SH is driven by climate, but only weakly structured by dispersal. a Three-dimensional non-metric multidimensional scaling of fungal community composition based on Bray–Curtis dissimilarities (stress = 0.13). The figure shows the first two ordination axes, but the third ordination axis is captured through the rgb colour coding of the samples. All environmental variables used in the random forest models are passively projected onto the ordination space. b Mean annual temperatures and annual precipitation of all analysed samples coloured as in panel (a). c The same ordination as in (a), but with samples coloured according to the continents, suggests relatively weak geographic patterns in the data. d Geographic distribution of the samples. The samples are coloured as in panel a; the more similar the colour is, the more similar the community composition of the samples