Complex Behavior in Simple Models of Biological Coevolution

Details Complex Behavior in Simple Models of Biological Coevolution Complex Behavior in Simple Models of Biological Coevolution

2006-09-08

arxiv.org/abs/q-bio/0609013v1

Int. J. Mod. Phys. C 20, 1387-1397 (2009)

Biology

Quantitative Biology

Populations and Evolution

8 pages, 5 figures

Scientific paper

10.1142/S012918310901445X

We explore the complex dynamical behavior of simple predator-prey models of biological coevolution that account for interspecific and intraspecific competition for resources, as well as adaptive foraging behavior. In long kinetic Monte Carlo simulations of these models we find quite robust 1/f-like noise in species diversity and population sizes, as well as power-law distributions for the lifetimes of individual species and the durations of quiet periods of relative evolutionary stasis. In one model, based on the Holling Type II functional response, adaptive foraging produces a metastable low-diversity phase and a stable high-diversity phase.

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