Figure Captions
Fig. 1: The Living Planet Index for a neutral community.(a) Zero-sum e cological drift of J = 5000 individuals across S = 40 species between 1970 and 2020.(b) The mean and 95% confidence intervals of Living Planet Index (LPI) for the neutral community, where the baseline is set to population abundance in 1970.
Fig. 2: The extinction risk of a neutral community.(a) Extinction probability as a function of abundance across three time intervals (10, 20 and 100 years) for a neutral community ofJ = 5000. Coloured lines show the thresholds for critically endangered (CR), endangered (EN) and vulnerable (VU) populations.(b) The zero-sum ecological drift of J = 5000 individuals from S =40 species between 1970 and 2020, superimposed with coloured thresholds of extinction threat categories.(c) The percentage of each species per threat category between 1970 and 2020, and (d) the associated Red List Index(where values of 1 indicate all species are Least Concern, LC, and 0 indicates that all species are extinct, EX).