Mike,
I encourage you to read your own reference. The examples cited are first, largely experimental, ie selections are performed which are not observed in nature, and second generally incomplete at least by several standards which the author presents as criteria for speciation. As an example, incubating single cell organisms in the presence of a predator change the morphology of the cell. This does not alter the genetic makeup of the cell, merely it's morphology. Intuitively, one can see that simple morphologic criteria do not alter the genetic heritage, if you will, of the original cell (no statement about what the cell line looks like if it returns to a nonpredated incubator is made either).
In medicine, although a number bacterial pathogens have developed resistance to antibiotics because of the widespread use of antibiotics, the resistant bacteria have not been reclassed as new sp simply because of this phenotypic (& sometimes partial genetic) change.
The author you quote notes the difficulty with the definition of speciation and then proceeds to predominantly utilize the loosest defn's in his examination of the experiments' outcomes.
What I (and perhaps others) are stating, is that no clearly defined speciation has occurred in the "wild". The closest thing, to my knowledge is alteration in phenotypic frequency, but within the same gene pool - example Monarch butterflys orange and black, more orange until coal burning, then more black (presumed because of improved camo on soot blackened trees), or antibiotic resistance of bacteria.