  Quantification of chaos is a challenging issue in complex dynamical systems.
In this paper, we discuss the chaotic properties of generalized Lotka-Volterra
and May-Leonard models of biodiversity, via the Hamming distance density. We
identified chaotic behavior for different scenarios via the specific features
of the Hamming distance and the method of q-exponential fitting. We also
investigated the spatial autocorrelation length to find the corresponding
characteristic length in terms of the number of species in each system. In
particular, the results concerning the characteristic length are in good
accordance with the study of the chaotic behavior implemented in this work.
