Fig. 5.

Boxplot representation of Shannon and Simpson’s diversity, and Pielou’s evenness indices and of species richness. Species richness was represented by the number of bands. Significant differences between the four groups (“Control”, “Susceptible”, “Intermediate” and “Tolerant”) were investigated by ANOVA followed by multiple pairwise comparisons of means (post-hoc Tukey’s HSD test) using R software version 2.14.1 [47]. Different letters indicate significant differences between groups. Values from all statistical tests are available in Additional file 3: Table S1