Fig. 5.
Comparison between analytical expressions for p − prand and simulations of the generalized cascade model for motifs S1–S5. The model predicts over-representation of motifs S1 and S2 and under-representation of motifs S3–S5. The analytical predictions compare well with the model-generated data, though they generally overestimate the differences due to the approximate character of the expressions used to evaluate prand. Filled circles are food webs with S = 50 and open squares food webs with S = 100. Each data point represents an average over 1000 model-generated food webs.