Fig. S1 Frequency distribution of 454 sequence lengths.

Fig. S2 Scatterplot of logratio-transformed proportions of added biomass and detected number of sequences for two most common species (Solidago group and Artemisia spp.) in known root mixtures.

Fig. S3 Scatterplot of logratio-transformed aboveground richness and total belowground richness and total belowground species richness (mean from 0.001 m3 sample volume).

Table S1 The effect of sequence length on MOTU (molecular operational taxonomic unit) identification.

MEC_5390_sm_SupportingInformation.pdf742KSupporting info item

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.