Data from: Population extinctions can increase metapopulation persistence

Jeremy W. Fox, David Vasseur, Morgan Cotroneo, Lilian Guan & Franz Simon
Metapopulations persist when local populations are rapidly recolonized following local extinctions. Such persistence requires asynchrony; simultaneous crashes of all populations would leave no source of recolonization. We show theoretically and experimentally that catastrophic population extinctions themselves can promote metapopulation persistence, by preventing spatial synchrony and thus enhancing recolonization. We refer to this behaviour as the ‘spatial hydra effect’: as with the mythical hydra that grows two new heads when one is removed, extinctions can increase...
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