The Global Wetland Outlook  reported that between 1970 and 2015, the area of freshwater wetlands declined by approximately 35% , with high levels of the overall percentage of threatened species recorded in Madagascar and Indian Ocean islands ; in Europe ; in the tropical Andes ; and New Zealand  . Where long-term data are available, only 13% of the wetlands recorded in and around the year 1700 remained by 2000. However, these data may overestimate the rate of loss  . Many wetland-dependent species have seen a long-term decline, with the Living Planet Index showing that 81% of populations of freshwater species are in decline and others being threatened by extinction  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report