"that the ocean's coldest surface waters, such as in the Weddell Sea of Antarctica, will become corrosive to pteropods much sooner than thought. Shells of these marine organisms may simply dissolve as soon as atmospheric CO2 reaches the levels that are expected to occur in about 50 years under the IS92a business-as-usual CO2 emissions scenario. "
Put some pteropods in a tank, lower the pH, see what happens. This should be an easy experiment to do.
It's been done (read the paragraph starting "As a complement to...")
first you have to see if you can actually sustain the CO2 levels in such a large volume, with an equivalent environment and availability of other resources - or will the organisms simply use the CO2 and thus take it out of the system? ...Perhaps even as more CaCO3. Will the increase in acidity act upon the corals first, or upon the ocena floor and debris - which would result in an increase in materials available?