Lichen community values and stand characteristics of the 20 wooded study sites on Gotland, Sweden.

Site-level pre-epidemic lichen community values from inventories in 1989–1991; showing the number of Fraxinus excelsior trees inventoried for lichens, species richness (S.R.) and abundance values (No. of Ind.) of all lichens and red-listed species, respectively. Stand characteristics for each site and management category; showing stand size (ha), percentage values of canopy closure, fraction of F. excelsior population with signs of recent pollarding (pollarded within the last two decades), and percentage tree species composition. Projected post-epidemic site-level lichen community values; showing the percentage of the F. excelsior population classified as dead or dying (optimistic scenario) and infected (likely scenario), average ANOSIM R values comparing pre-epidemic and projected post-epidemic local lichen species composition on F. excelsior tree populations, the projected probability values of no local coextinctions (Res) and the average percentage of extinct species (Se ) among F. excelsior tree populations and all tree species in the respective post-epidemic community.*bonferroni-corrected pp1the probability of no coextinctions and 2the average proportion (%) of extinct species (Se) on ash F. excelsior in the post-epidemic community 3the probability of no coextinctions and 4the average proportion (%) of extinct species (Se) when including occurrences on all tree species.