2. Seed size of selected seed lots and corresponding fungal infestation and richness

The average size of the seeds in a seed lot is calculated as a mean surface of the intersection area of 100 measured seeds per seed lot (column “Ø Area [mm2]”). Columns “Species”, “Group” and “Continent” indicate taxonomy of tree species to which seed lots belong and continent of origin of each seed lot. Fungal infestation of each seed lot is indicated by the column “Number of isolates” and fungal richness of each seed lot is indicated by columns “Number of morphotypes” and “Number of ESVs”