Fraction of all species that are at high risk of extinction as of 2004

Range ~40 % of all species
Organism Amphibians
Reference Wake DB, Koo MS. Amphibians. Curr Biol. 2018 Nov 5 28(21):R1237-R1241. doi: 10.1016/j.cub.2018.09.028 P.R1237 bottom of left column and p.R1240 middle column top paragraphPubMed ID30399342
Comments P.R1237 bottom of left column: "A study of every amphibian species known in 2004 showed that on the order of 40% were at high risk of extinction, and by 2008, the decline of amphibians was seen as evidence of an impending sixth mass extinction." P.R1240 middle column top paragraph: "The first worldwide assessment of the status of amphibians by the International Union for Conservation of Nature (IUCN) published in 2004 found an astounding 43% of species to be experiencing population decreases: 7.4% were in the highest category of risk."
Entered by Uri M
ID 117259