Number of OTUs identified.

The number of OTUs is reported given the alignment algorithm, the genetic distance calculation methodology and the a priori established primary intraspecific distance partitions in ABGD. 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; GTR, General Time Reversible evolutionary model based on six substitution rate parameters and 4 equilibrium base frequency parameters.