The extension and intensification of deep-water acidification  has been identified as a further key risk to deep-water coral ecosystems  . Literature since SROCC supports this assessment , although scleractinians and gorgonians are found in regions undersaturated with respect to aragonite . Laboratory experiments on reef-forming scleractinians show variable results, with regional acclimation potential and population-genetic adaptations . Desmophyllum pertusum7 and Madrepora oculata maintain calcification in moderately low pH  and near-saturation of aragonite , but lower pH  and corrosive conditions lead to net dissolution of D. pertusum skeletons  . Experiments suggest that D. dianthus is more sensitive to warming than acidification and when both are high, as projected under climate change. Warming appears to compensate for declines in calcification, with fitness also sensitive to food availability .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report