{"refrec":{"BRefID":409782,"RR":"<b>Findlay, H.S.; Feely, R.A.; Jiang, L.-Q.; Pelletier, G.; Bednaršek, N.</b> (2025). Ocean acidification: Another planetary boundary crossed. <i>Glob. Chang. Biol. 31(6)</i>: e70238. <a href=\"https://dx.doi.org/10.1111/gcb.70238\" target=\"_blank\">https://dx.doi.org/10.1111/gcb.70238</a>","BEntID":407587,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Glob. Chang. Biol. 31(6)</i>: e70238. <a href=\"https://dx.doi.org/10.1111/gcb.70238\" target=\"_blank\">https://dx.doi.org/10.1111/gcb.70238</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Findlay, H.S.; Feely, R.A.; Jiang, L.-Q.; Pelletier, G.; Bednaršek, N.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Findlay, H.S. <i>et al.</i>","Englishabstract":"Ocean acidification has been identified in the Planetary Boundary Framework as a planetary process approaching a boundary that could lead to unacceptable environmental change. Using revised estimates of pre-industrial aragonite saturation state, state-of-the-art data-model products, including uncertainties and assessing impact on ecological indicators, we improve upon the ocean acidification planetary boundary assessment and demonstrate that by 2020, the average global ocean conditions had already crossed into the uncertainty range of the ocean acidification boundary. This analysis was further extended to the subsurface ocean, revealing that up to 60% of the global subsurface ocean (down to 200 m) had crossed that boundary, compared to over 40% of the global surface ocean. These changes result in significant declines in suitable habitats for important calcifying species, including 43% reduction in habitat for tropical and subtropical coral reefs, up to 61% for polar pteropods, and 13% for coastal bivalves. 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