Figure 4
Composition of the nine 18SrRNA gene clone libraries. Each histogram represents the community structure expressed by the diversity of OTUs (a total of 88 OTUs were detected), their affiliation to phylogenetic groups, and the proportion of clones per OTU. The SACE and SChao1 value (richness estimators) and number of OTUs are specified on the top of each histogram. Arbitrarily assigned OTU reference numbers are given in each section of the histogram, and their taxonomic affiliations are presented in the key.