Scientists have issued a stark warning about the future of flowering plants, highlighting a hidden crisis that could lead to the loss of a fifth of the world's evolutionary history. This alarming revelation comes from a recent study published in Science, which uses a novel approach to assess the extinction stakes for angiosperms, or flowering plants. The study introduces the EDGE (Evolutionarily Distinct and Globally Endangered) score, a method that combines a species' evolutionary distinctiveness with its risk of extinction. This innovative scoring system has been used to identify species that are both evolutionarily unique and globally endangered, with a focus on flowering plants.
The findings are concerning, to say the least. Of the 335,497 known flowering plant species analyzed, 9,945 qualified as EDGE species, meaning approximately 3% of all known plant species are both evolutionarily unique and globally endangered. This includes familiar names like the vanilla orchid, the stinky corpse flower, and the world's smallest water-lily, as well as lesser-known plants such as the jellyfish tree and Hondurodendron urceolatum, the only living member of its genus. The study emphasizes the irreplaceable value of these species, which could lead to the loss of potential breakthroughs in medicine, such as the next cancer drug or antibiotic.
The implications of this research are far-reaching. It highlights the urgent need for conservation efforts to protect these unique and endangered plants. By applying the EDGE approach to flowering plants, conservationists can better understand the importance of these species and their role in maintaining the planet's biodiversity. The study's lead author, Félix Forest, emphasizes the significance of these findings, stating that the conservation of these species will help maintain the benefits they provide to people and the future of all life on Earth.
The authors conclude that with over two-fifths of plants estimated to be at risk of extinction and 75% of those that remain to be discovered predicted to be threatened, it is time to catalyze a new generation of conservation monitoring and action. This call to action is crucial, as the loss of these plant species could have profound and irreversible consequences for the planet's ecosystems and the benefits they provide to humanity.
