simecol (version 0.5-5)

upca: The Uniform Period Chaotic Amplitude Model

Description

simecol example: resource-predator-prey model, which is able to exhibit chaotic behaviour.

Usage

data(upca)

Details

To see all details, please have a look into the implementation and the original publications.

References

Blasius, B., Huppert, A., and Stone, L. (1999) Complex dynamics and phase synchronization in spatially extended ecological systems. Nature, 399 354--359. Blasius, B. and Stone, L. (2000) Chaos and phase synchronization in ecological systems. International Journal of Bifurcation and Chaos, 10 2361--2380.

See Also

sim, parms, init, times.

Examples

data(upca)
    plot(sim(upca))

    # omit stabilizing parameter wstar
    parms(upca)["wstar"] <- 0
    plot(sim(upca))

    # change functional response from
    # Holling II (default) to Lotka-Volterra
    equations(upca)$f <- function(x, y, k) x * y
    plot(sim(upca))