The Southern Ocean is suggested to be one of the earliest ecosystems to be affected by ocean acidification because of higher solubilities of CO2 and CaCO3 in cold waters as well as the upwelling of deep seawater containing high CO2 (Feely et al., 2004). Nevertheless, most research efforts have mainly been directed to understanding how tropical and temporal calcifying organisms (corals, some phytoplankton, shellfish etc) will be affected by ocean acidification (Doney et al., 2009).
Kawaguchi S., Ishida A., & Ishimatsu A., 2011. Experimental approach towards understanding effects of Ocean Acidification on Antarctic krill. Solas news 12:22-26. Newsletter.