Genetic variation determines which feedbacks drive and alter predator–prey eco‐evolutionary cycles

• DOI: 10.1002/ecm.1304
• Publication Date: 2018-04-15T16:48:58Z
• Authors: Michael H. Cortez
• Keywords: Trait; Evolutionary Dynamics

Abstract Evolution can alter the ecological dynamics of communities, but effects depend on magnitudes standing genetic variation in evolving species. Using an eco‐coevolutionary predator–prey model, I identify how prey and predator determine when ecological, evolutionary, eco‐evolutionary feedbacks influence system stability phase lags cycles. Here, are defined by subsystems, i.e., a subset components whole other held fixed; (evolutionary) involve direct indirect between population densities (species traits) traits. When is low both species, involving either or trait have strongest stability, high one evolutionary that species’ effects, and, traits effects. present biological conditions under which each feedback destabilize cause Predator–prey cycles also arise all stabilizing. This counterintuitive outcome occurs many variables more stabilizing than fewer vice versa. density (mediated responses species) trait‐mediated introduce delays lag peaks to increase. work explains unifies empirical theoretical studies coevolution alters systems those variation.