Extended Data Fig. 5: Herbivore sodium (Na) intake as a function of plant Na gradients.
From: Sodium constraints on megaherbivore communities in Africa
Relationship between modelled dietary forage Na concentration and field-measured herbivore faecal Na concentration using the unselective foraging scenario. Points and vertical error bars represent the mean ± 1 SD faecal Na concentration per genus per protected area. The total number of independent points is n = 111 from 20 genera across 20 protected areas. Note that axes are on log10 scales to emphasise attention on low-values that may be indicative of Na limitation. The black line represents the fit of a linear mixed effects model with species included as a random effect. The marginal R2 (fixed effects) denotes the proportion of variance explained by dietary Na availability. Analogous results for the 95th percentile (selective) scenario are in Fig. 2a.
