Fig. 5
Effect of drought on ECM communities. a A canonical analysis of principal coordinates ordination of ECM community composition of control (grey shapes) and rainfall exclusion (white shapes) plots during spring (circles) and fall (triangles). Each point represents the ECM community of a single transect in either block 1 (solid lines), block 2 (small dashes) or block 3 (large dashes). b Relative abundance at the family level in control (black bars) and rainfall exclusion (white bars) plots. An asterisk above a pair of bars indicates a significant difference (P < 0.05) between control and exclusion plots for the corresponding ECM family as tested using a chi-squared test