Florida's Everglades National Park is among the UNESCO natural heritage sites listed as imperiled by the International Union for Conservation of Nature.

(Javier Galeano/AFP/Getty Images)

At a Glance

The number of imperiled natural heritage sites hasrisen from 35 to 62 since 2014.The report warns that the list is likely to grow unless measures are taken to reduce greenhouse gases.

The number of natural heritage sites imperiled by climate change has nearly doubled in three years, according to a new report released this week at the United Nations climate talks in Bonn, Germany.

The report by the International Union for Conservation of Nature says the number of imperiled United Nations Educational Scientific and Cultural Organization sites that include coral reefs, glaciersand wetlands has. This meansone in four UNESCO natural sites are at risk, up from one in seven.

Coral reefs, including the Great BarrierReef off Australia, and glaciers top the list of ecosystems most threatened by global warming, the report notes.

“Climate change acts fast and is not sparing the finest treasures of our planet,”IUCN Director-General Inger Andersen . “The increase and the speed in which we are seeing this trend shift over just three years has been shocking to us, and the report warns that this number is likely to grow."

According to the report, 29 percent of UNESCO natural sites faced “significant” threats while 7 percent, including Florida's Everglades National Park, had a “critical” outlook.

“Protection of World Heritage sites is an international responsibility of the same governments that have signed up to the Paris Agreement,” Andersen said in a press release.“This IUCN to the delegates gathered here in Bonn: climate change acts fast and is not sparing the finest treasures of our planet. The scale and the pace at which it is damaging our natural heritage underline the need for urgent and ambitious national commitments and actions to implement the Paris Agreement.”

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Other threats impacting the sites include invasive species and unsustainable tourism or infrastructure development.

The report also notes that the funding and management of the sites have dropped dramatically since 2014 and warns that the number of natural World Heritage sites affected by climate change is likely to grow further unless efforts are made to curb greenhouse gases.