our aim was not to start from known and named sequences and test whether species from DNA taxonomy matched them or not; our aim was to test whether a barcoding gap existed at all.
As concerns the delimitation of taxa on the level of cyanobacterial species, there exists a lot of valuable literature, which was not cited. The characterization and separation of species was not satisfactory solved, but it is particularly important (criteria are not unique for all genera) and need better discussion.