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. 2021 Dec 6;15(1):22–39. doi: 10.1111/eva.13318

Several sources provide detailed definitions of the various types of translocation interventions (IUCN, 2013; Seddon, 2010). We outline how we use the different terms below:

Within the species’ range:
  • if conspecifics are absent (i.e., locally extirpated): reintroduction (synonym: reestablishment).
  • if conspecifics are present: augmentation (synonyms: population reinforcement, supplementation, restocking, enhancement and assisted gene flow). If the goal is specifically to increase population fitness by the introduction of new alleles, this may be referred to as genetic rescue.
Outside of the species’ range (not common for lions):
  • if the purpose is to avoid extinction as a result of loss of populations within the species’ range: assisted colonisation (synonyms: assisted migration and managed relocation).
  • if the purpose is to restore ecological function, e.g., as a result of the local extinction of an ecologically similar species: ecological replacement (synonyms: ecological substitute and taxon substitution).

If the focus is on the translocated individual, rather than on the target population or the ecological function it may provide, some organisations use the term rewilding. This typically involves a captive animal being introduced into an area where it can be free‐roaming for nonconsumptive purposes and possibly lead to restoring populations and ecological function (Carey, 2016).