Ripple et al. (2016)
Also: Ripple et al. 2016
Bushmeat hunting and extinction risk to the world's mammals
Ripple, W.J., Abernethy, K., Betts, M.G., Chapron, G., Dirzo, R., Galetti, M., Levi, T., Lindsey, P.A., Macdonald, D.W., Machovina, B., Newsome, T.M., Peres, C.A., Wallach, A.D., Wolf, C. & Young, H. (2016). Bushmeat hunting and extinction risk to the world's mammals. Royal Society Open Science. 3(10),160498. PDF
https://doi.org/10.1098/rsos.160498
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.