One in Five Wetlands Could Vanish by 2050: Global Environmental Crisis Looms

A Quiet Catastrophe: The Global Loss of Wetlands

A silent catastrophe is unfolding. Swamps, peatlands, mangroves, lakes, and coral reefs—22% of the world’s wetlands have vanished since 1970, according to a report released on Tuesday, July 15. This alarming news comes just days before the 15th Meeting of the Parties to the Convention on Wetlands in Victoria Falls, Zimbabwe. The disappearance of 411 million hectares of wetland habitat has been primarily due to land use changes, pollution, agricultural expansion, rising sea levels, and drought.

With one in four wetlands in poor ecological condition, the report’s authors warn that if no actions are taken, one-fifth of the remaining wetlands could be lost by 2050. Despite their degradation, these ecosystems provide crucial services. Beyond filtering and storing water—thereby reducing the impacts of floods and droughts—wetlands host a diverse array of biodiversity including mollusks, crustaceans, fish, and birds. They also offer vital areas for rice and salt production and act as natural carbon sinks.

To reverse this trend, an investment of between $275 billion and $550 billion annually is necessary, the report suggests. This amount is a mere drop in the ocean compared to the estimated $39 trillion in benefits these ecosystems contribute to society each year.