Un third of tree species, ie 17,500 varieties, are threatened with extinction. And “if we don’t act now, it will have an impact on humanity, our economies. Ecologically, this will have a catastrophic impact on the planet. This warning cry comes from scientists at the International Union for Conservation of Nature (IUCN), and was spotted by The Guardian.
“Last year we released the State of the World’s Trees report, in which we showed that at least 17,500 tree species, or about a third of the world’s 60,000 tree species , are threatened with extinction. Now we want to highlight why there is concern that so many tree species are going extinct,” said Malin Rivers, lead author of the scientific paper. Apart from the economic aspect of this disappearance, the article recalling that in some countries woodworking provides up to 25% of the income of some households, there is its cultural and spiritual dimension, such as the baobabs in Madagascar. The extinction of so many trees would be a disaster for the planet. Half of the plant and animal species could follow, trees being their natural habitat.
An ally against global warming
Not to mention that the tree is a formidable ally in the fight against global warming. In addition to welcome shade areas, forests are also important carbon stores. There is, however, a novelty in this article: “We show that diversified forests store more carbon than monocultures. This is true for many ecological functions, not just carbon sequestration, but also providing habitat for animals, stabilizing soils, resisting pests and diseases, resisting storms and weather. By losing the diversity of trees, we will also lose the diversity of all organisms: birds, animals, fungi, microorganisms, insects. »
READ ALSOWhy we must also listen to the decreants
And who says threatened tree, says threatened fauna. Because yes, a huge amount of plants and animals depend on forests. “When we look at extinction risks for mammals or birds, that underlies habitat loss, and habitat loss is often tree loss,” he said. “If we don’t take care of the trees, there’s no way to take care of all the other life forms out there. »
More than alerting, these scientists now demand action and that “governments take their responsibilities and that there is a common reflection on biodiversity and climate change”.