More than one in three tree species worldwide faces extinction - IUCN Red List The IUCN Red List now includes 166,061 species, of which 46,337 are threatened with extinction.
“Today, we are releasing the global assessment of the world’s trees on the IUCN Red List, which shows that more than one in three tree species are threatened with extinction. Trees are essential to support life on Earth through their vital role in ecosystems, and millions of people depend upon them for their lives and livelihoods. As the IUCN Red List celebrates 60 years of impact, this assessment highlights its importance as a barometer of life, but also, crucially, as a unique tool guiding action to reverse the decline of nature,” said Dr Grethel Aguilar, IUCN Director General.
For the first time, the majority of the world’s trees have been listed on the IUCN Red List, revealing that at least 16,425 of the 47,282 species assessed are at risk of extinction. Trees now account for over one quarter of species on the IUCN Red List, and the number of threatened trees is more than double the number of all threatened birds, mammals, reptiles and amphibians combined. Tree species are at risk of extinction in 192 countries around the world.
“This comprehensive assessment presents the first global picture of the conservation status of trees, which enables us to make better informed conservation decisions and take action to protect trees where it is urgently needed,” said Dr Malin Rivers, Global Tree Assessment lead at Botanic Gardens Conservation International, a Red List Partner. “The work is a global effort, with over 1,000 tree experts involved. We need to continue to work together to scale up local, national and international tree conservation action to support people and the planet.”
The highest proportion of threatened trees is found on islands. Island trees are at particularly high risk due to deforestation for urban development and agriculture at all scales, as well as invasive species, pests and diseases. Climate change is increasingly threatening trees, especially in the tropics, through sea-level rise and stronger, more frequent storms. Addressing the threats that trees face, habitat protection and restoration, as well as ex situ conservation through seed banks and botanic garden collections are critical to prevent extinctions on islands and worldwide. Community action has already led to positive outcomes from the Juan Fernández islands to Cuba, from Madagascar to Fiji.
