Our World in Data's source article
Also a couple of other studies I bookmarked some time ago about land usage/habitat loss and animal agriculture:
- Global habitat loss and extinction risk of terrestrial vertebrates under future land-use-change scenarios
- Ecosystem decay exacerbates biodiversity loss with habitat loss
- Land use for animal production in global change studies: Defining and characterizing a framework - I have yet to start to read it but a friend of mine who usually passes me some good sources said this one is quite interesting so I'll just post it here anyway
The first two Nature links are paywalled but I am sure I have the pdf laying around somewhere in my pc. I will link them as soon as I find them