Fig. 3. Box-and-whisker plots of the mean site Ellenberg indicator values for light, temperature, continentality, moisture, soil calcium, and macronutrients for each of the distinguished vegetation groups (numbers 1–10, see text and table 1). Species richness of the particular vegetation groups expressed as the Shannon-Weaner index of diversity is also shown. Boxes represent mean values ± SD, whiskers are non-outlier min-max values. Significance test using Tukey HSD test for comparison of vegetation groups was performed and it proved significant differences between markedly shifted groups (p <0.05). Results are not shown due to overflow of graphs with letters.