Fig. 2

The estimates of alpha diversity indices of the cycad-associated microbial communities from cultural (a, c, e, g, i, k) and natural habitats (b, d, f, h, j, l). a–f Estimated alpha diversity for bacteria. g–i Estimated alpha diversity for fungi. a, b, g, h The Inverse Simpson diversity index. c, d, i, j OTU richness. e, f, k, l The Pielou’s evenness. Box plots showed the range of estimated values between 25% and 75%, the median, the minimum and the maximum observed values within each dataset. The overall plant compartment effects (F_{(DFn, DFd)} and p value) were displayed at the top of each graph