Boxplots showing median (line), quartiles, outliers and the range of (a) elevation, (b) slope, (c) mean annual temperature, (d) mean diurnal temperature range, (e) minimum temperature of the coldest month, (f) sum of annual precipitation and (g) precipitation seasonality. The different colours of the boxes represent alliances: red – Ligulario thomsonii-Geranion regelii, blue – Artemision dracunculi and green – Poa alpinae-Bistortion ellipticae. The abbreviations of the syntaxonomic units are explained in the Figure 2 and Syntaxonomic synopsis.