ABGD analysis statistics.

The number of operational taxonomic units is reported given the alignment algorithm, the genetic distance calculation methodology and the a priori established recursive intraspecific distance partitions in ABGD as a function of the prior limit between intra- and inter-specific divergence. p-distance, the proportion (p) of nucleotide sites at which two sequences being compared are different; K2P distance, Kimura’s 2-parameter distance correction which takes into account transitional and transversional substitutions while assuming equal nucleotide frequencies and invariable substitutional rates among sites; TN, Tamura-Nei model based on variable base frequencies, equal transversion rates and variable transition rates.