Supplementary material for: Süveges et al. (2022)
Supplementary Table S1. - Numbering, year of observation, location, altitude, orchid and poplar taxa, soil parameters, diameters and distances of trunks in the 232 plantations studied.
Supplementary Table S2. - Correlation matrix of plantation characteristics and soil parameters.
Supplementary Table S3. - Model results (performed separately for the six most common species) showing the correlation between plantation characteristics and orchid presence, and soil chemistry and orchid presence.