Fig. 2.

Relative variation (in percentage) of plant α-diversity between trophically coupled and uncoupled communities. α-Diversity is measured as the local plant species richness S_p. A positive value means that trophically coupled communities are species-richer than uncoupled ones. Different panels show results for the threshold model with one trait (A and B), the matching model with one trait and σ = 0.015 (C and D), and the matching model with one trait and σ = 1 (E and F). A, C, and E correspond to mutualistic interactions, whereas B, D, and F correspond to antagonistic interactions. Parameter values are μ_p = μ_a = 0.004, m_a = 0.625, and c_a = 0.16.