Stoichiometric models that look more specifically into the dynamics of plant–herbivore models yield a set of identical predictions despite divergence in underlying assumptions: (i) X limitation of herbivores, as a result of high C : X ratios in plants, hinders the onset of limit cycles as predicted by the paradox of enrichment; (ii) alternative stable states to cycles emerge; (iii) very large stoichiometric mismatches between plants and herbivores can lead to the extinction of herbivores.