Wetlands are some of the most diverse and also most threatened ecosystems on Earth. Lakes and rivers, peatlands and marshes, coral reefs and mangrove forests are not only worth protecting as habitats for rare and threatened animal and plant species, they also provide vital ecosystem services for humans. When healthy, they supply fresh water and food, improve water quality, protect us from natural disasters such as floods and, as long-term carbon sinks, play a far greater role in protecting the climate than all other types of ecosystems.
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