My solution is this: There is one species concept (and it refers to real species).
In many organisms, the way to pinpoint a species is to apply the biological species concept.
For example, there is much debate and literature out there on the various merits of the biological species concept (reproductive isolation) vs. the phylogenetic species concept (monophyly: populations share common ancestor) vs. morphospecies concept (morphological distinctiveness).
How to be a chaste species pluralist-realist: The origins of species modes and the Synapomorphic Species Concept.
Hybridisation and a host of other issues that undermine the species concept are broadly referred to as the species problem.
Morphological species concept Another way that organisms can be classified is on the basis of morphology, or physical features.
Biological species concept Most broadly, a species is a group of organisms with a shared, closed gene pool.
Joe Walston (@JoeWalston_WCS) @KarlMathiesen different views on species concept means this question can never be answered in its purest form.
Should any species concept proposed by a biologist be accepted?
A problem now arises: those who adopt the phylogenetic species concept will count species numbers differently from those who adopt the biological species concept.
He associates essentialism with the view that a species concept refers to a universal or type.
