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We investigate the complex spatiotemporal dynamics of an ecological networkwith species dispersal mediated via a mean-field coupling. The local dynamicsof the network are governed by the Truscott--Brindley model, which is animportant ecological model showing excitability. Our results focus on theinterplay of excitability and dispersal by always considering that theindividual nodes are in their (excitable) steady states. In contrast to theprevious studies, we not only observe the dispersal induced generation ofoscillation but we also report two distinct mechanisms of cessation ofoscillations, namely amplitude and oscillation death. We show that, thedispersal between the nodes influences the intrinsic dynamics of the systemresulting multiple oscillatory dynamics such as period-1 and period-2 limitcycles. We also show the existence of multi-cluster states which has muchrelevance and importance in ecology.

Generation and cessation of oscillations: Interplay of excitability and dispersal in a class of ecosystem