Recolonization of a previously extinct patch is an example of:
The rescue effect and recolonization are related but distinct. Rescue occurs when immigrants enter a patch that is still occupied and prevent its local population from going extinct. Recolonization occurs after extinction, when dispersers establish a new population in an empty patch. Therefore, the wording “recolonization of a previously extinct patch” describes colonization following local extinction, not rescue in its strict ecological meaning. Movement of colonists is migration or dispersal, making that listed alternative closer to the mechanism, although “recolonization” itself would be th
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 9
