Fig. 6.

Patterns of variation in soil fungal community in the mineral soil (0-10 cm) across a fertility gradient in a beech dominated mountain forest as explained by detrended correspondence analysis (DCA). The DCA is based on 16 pooled sampling plots and 352 fungal taxonomic groups present at ≥ 3 sampling plots. Taxonomic grouping occurred at genus level or closest taxonomic level. Colour-coded fungal lifestyles/guilds were assigned; symbol size gives an indication for relative abundance. To increase readability, not all groups are labelled. Vectors are significant mineral soil variables related to fungal community patterns (POX, phenol oxidase; LEU, leucine aminopeptidase). Fertility is an index based on the first axis of a principal component analysis of Ellenberg’s indicator values for vascular plants at sampling plots (Supporting Information Fig. S2). Details on fungal taxonomic groups, relative abundances and associated lifestyles/guilds are given in Table S3.