Operational definition of species. Biological species concept (Mayr): reproductively isolated populations. Phylogenetic: smallest diagnosable monophyletic cluster. Morphological, ecological, etc. — ~26 proposed concepts.
Operational definition of species. Biological species concept (Mayr): reproductively isolated populations. Phylogenetic: smallest diagnosable monophyletic cluster. Morphological, ecological, etc. — ~26 proposed concepts.