  Cyclic predator-prey systems have been shown to give rise to rich, and novel,
space-time patterns, as for example coarsening domains with non-trivial
in-domain dynamics. In this work we study numerically the responses of a cyclic
six-species model, characterized by the formation of spirals inside coarsening
domains, to two different types of perturbations: changing the values of the
predation and reproduction rates as well as changing the interaction scheme.
For both protocols we monitor the time evolution of the system after the onset
of the perturbation through the measurement of dynamical correlation functions
and time-dependent densities of empty sites. In this way we gain insights into
the complex responses to different perturbations in a system where spirals,
which are due to the formation of cyclic alliances, dominate the dynamics
inside the coarsening domains.
