From your link.
.0 Species Definitions
A discussion of speciation requires a definition of what constitutes a species. This is a topic of considerable debate within the biological community. Three recent reviews in the Journal of Phycology give some idea of the scope of the debate (Castenholz 1992, Manhart and McCourt 1992, Wood and Leatham 1992). There are a variety of different species concept currently in use by biologists. These include folk, biological, morphological, genetic, paleontological, evolutionary, phylogenetic and biosystematic definitions. In the interest of brevity, I'll only discuss four of these -- folk, biological, morphological and phylogenetic. A good review of species definitions is given in Stuessy 1990.
2.1 The Folk Concept of Species
Naturalists around the world have found that the individual plants and animals they see can be mentally grouped into a number of taxa, in which the individuals are basically alike. In societies that are close to nature, each taxon is given a name. These sorts of folk taxonomies have two features in common. One aspect is the idea of reproductive compatability and continuity within a species. Dogs beget dogs, they never beget cats! This has a firm grounding in folk knowledge. The second notion is that there is a discontinuity of variation between species. In other words, you can tell species apart by looking at them (Cronquist 1988).
2.2 The Biological Species Concept
Over the last few decades the theoretically preeminent species definition has been the biological species concept (BSC).
LOL you see science trying to change what a species is called to attempt to make their THEORY fit...LOL
Thye have even came up with a THORETICAL species definition...hahahahahahaha
Here is where this scripture is appropriate.
20Timothy, guard what has been entrusted to your care. Turn away from godless chatter and the opposing ideas of what is falsely called knowledge, 21which some have professed and in so doing have wandered from the faith.
Grace be with you.
I was not laughing at you only the ridiculous Theoretical theories of these wonderful minds wasting their time.
Theorizing things that will never produce any real sound eveidence to back.
2 Timothy 2;23Don't have anything to do with foolish and stupid arguments, because you know they produce quarrels. 24And the Lord's servant must not quarrel; instead, he must be kind to everyone, able to teach, not resentful. 25Those who oppose him he must gently instruct, in the hope that God will grant them repentance leading them to a knowledge of the truth, 26and that they will come to their senses and escape from the trap of the devil, who has taken them captive to do his will.