Extended Data Table 2 Statistical model for treatment effects on richness after 3 years of treatment (n = 29) as a function of fertilization by N, P and K and micronutrients, herbivore exclusion by fencing, and their interaction

From: Herbivores and nutrients control grassland plant diversity via light limitation

  1. Linear mixed-effects model was fit by maximum likelihood. Random effects in model were ‘site’ (s.d. = 5.60) and ‘block within site’ (s.d. = 1.22). The intercept is the estimated mean value of the control plots (no fence, no nutrients). This model is shown in Fig. 2a.
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