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More than 1 in 3 tree species are at risk of going extinct, new analysis shows

A section of deforestation is pictured near La Paz, Guaviare department, Colombia, on Sunday, July 30, 2023. (Ivan Valencia/Bloomberg/Getty Images via CNN Newsource) A section of deforestation is pictured near La Paz, Guaviare department, Colombia, on Sunday, July 30, 2023. (Ivan Valencia/Bloomberg/Getty Images via CNN Newsource)
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The world鈥檚 trees are in critical danger, with a staggering number of tree species teetering on the brink of extinction, according to a new global analysis released Monday.

The decade-long project found that more than one in three tree species are threatened with extinction, underscoring the scale of the crisis facing our planet鈥檚 ecosystems.

The report for the International Union for Conservation of Nature鈥檚 , which dropped during the two-week UN biodiversity conference in Cali, Colombia, revealed that of the 47,282 tree species assessed, at least 16,425 are at risk of going extinct 鈥 more than double the number of all birds, mammals, reptiles and amphibians threatened with extinction combined.

Planet-warming fossil fuel pollution is threatening the trees, which suck that pollution out of the atmosphere, meaning their loss is exacerbating the climate crisis.

Some of the major threats trees face also include deforestation for urban development, agriculture, invasive species, diseases, as well as sea level rise and more intense storms, researchers say.

The list reveals how 鈥渢he loss of trees directly threatens thousands of other species, plants, fungi and animals, demonstrating how deeply interconnected our natural world is,鈥 Grethel Aguilar, IUCN Director General, said during a Monday press briefing in Colombia.

鈥淭rees are the barometer of life,鈥 Aguilar added. They produce the oxygen humans breathe, provide food and shelter for wildlife, give medicine and sustenance to Indigenous peoples, and absorb heat-trapping carbon pollution from the atmosphere.

The highest portion of threatened trees is found on islands like Fiji, Cuba and Madagascar. In South America, which is home to the Amazon Rainforest, 3,356 out of the 13,668 assessed tree species are at risk of extinction due to deforestation for crop farming and livestock ranching.

The Red List is considered the most comprehensive global source for threatened species and extinction information. The index categorizes species by those that are of least concern, near threatened, vulnerable, endangered, critically endangered and extinct. These classifications are based on the species鈥 population size, distribution, habitat loss, and other threats such as the climate crisis.

Being listed as a threatened species means that the species faces the risk of extinction, sending a serious warning sign that calls on governments and organizations to take urgent conservation efforts to prevent a species鈥 extinction.

Those efforts need to start with trees, Aguilar said.

鈥淐an you imagine a planet without trees?鈥 she added. 鈥淲e, humans, are capable to reverse this and save these trees that we depend on, so the task that we have is huge.鈥

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