simecol (version 0.3-11)

upca: The Uniform Period Chaotic Amplitude Model

Description

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

Usage

data(upca)

Details

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

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) <- list(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))