to ecological phase shifts . The upper vertical limits of some species will also be constrained by climate change . Experimental evidence since previous assessments further indicates that acidification decreases abundance and richness of calcifying species , although there is limited evidence for acclimation in some species. Synergistic effects of warming and acidification will promote shifts towards macroalgal dominance in some ecosystems  and lead to reorganisation of communities .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report