Table 2. Summary information for the two selected published datasets, including a summary of the number and percent of operational taxa assigned to the core by each of the four methods. The Arabidopsis thaliana data set was generated by Lundberg et al. (2012) and only utilizes rhizosphere samples from the M21 site. Human microbiome data was generated by The Human Microbiome Consortium (2012) and includes only fecal samples.