Table 2. Results of LMM models for grass cover and grass species
richness. List of predictors: herbivore abundance; herbivore species
richness; habitat = location of plots at perennial, seasonal rivers or
crests; bedrock = location of plots on granite or basalt. Significant
results (p < 0.05) are marked in bold, marginally significant
(p = 0.1–0.05) are underlined. Herbivore abundance was log-transformed
in the model with grass species richness. The marginal coefficient of
determination R 2 represents the variance
explained by individual predictors and all fixed predictors by the full
models without accounting for variation explained by the spatial
arrangement of the plots.