Figure 2From: Selectivity by host plants affects the distribution of arbuscular mycorrhizal fungi: evidence from ITS rDNA sequence metadataRarefaction curves of sampling intensity. (a) The unsaturated relationship between global ITS-VT richness and sampling sequences indicated that more ITS-VTs would be uncovered with increasing sampling. (b) The positive near- linear curve suggested quite more ITS-VTs would be found with increasingly sampled host plants. The dashed line indicates the 95% confidence interval.Back to article page