https://phys.org/news/2018-06-primates-peril.html

A simulation of agricultural land expansion by the end of the century showed a decline of up to 78 percent in the distribution areas of many primate species. In their study, the scientists ask for immediate measures to protect the endangered primate species and supply recommendations for the long-term conservation of primates and to avert primate extinction (Peer Journal 2018).

Primates live in tropical and subtropical areas and are mainly found in regions of Africa, South America, Madagascar and Asia. The International Union for Conservation of Nature (IUCN) currently lists 439 species. 65 percent (286) of these are located in the four countries Brazil, Indonesia, Madagascar and the Democratic Republic of Congo. Around 60 percent of them are threatened by extinction. Particularly dire is the situation in Indonesia and Madagascar, where 90 percent of primate population declined and more than three-quarters of species are endangered.