It's been done (read the paragraph starting "As a complement to...")
Any proposition placed beyond the expected lifespan of the reader is an insult first and specious science second.
If the process of which the autors speak is even somewhat linear then why place the endpoint beyond casual observation?
By putting the endpoint beyond the lifespan of the reader and casual observer, the authors have assured themselves that they won't be around to hear a chorus of "atta boys" or a din of "I told you so's."
It's been done (read the paragraph starting "As a complement to...")
As a complement to model projections, one of the study coauthors, Victoria Fabry from the Department of Biological Sciences at California State University San Marcos, set up two-day shipboard experiments and demonstrated how shells of live pteropods begin to dissolve when the corrosive conditions that are projected to occur by 2100 are met. “Those results,” Fabry says, “suggest that for subpolar and polar pteropods to survive, they will need either to adapt to the expected changes in seawater chemistry or move to warmer, lower-latitude surface waters,”"Begin to dissolve" isn't a very scientific statement. The experiment also isn't a very good indicator of whether the little buggers can adapt.