Estimation of the total global biomass related to humans, wild terrestrial mammals and large domesticated animals (livestock) – a comparison between the years 1900 and 2000 (upper chart). The lower chart shows the ratio of species diversity of extant terrestrial mammals (wild) as well as domesticated ungulate species (livestock). Sources: 1: Smil (2011), 2: Rondini et al. (2011), 3: Diamond (2002). The figure was adapted from Zeller et al. (2017).