Gibbs, J.P., E.A. Hunter, K.T. Shoemaker, W.H. Tapia and L.F. Cayot
Restoration of extirpated species via captive breeding has typically relied on population viability as the primary criterion for evaluating success. This criterion is inadequate when species reintroduction is undertaken to restore ecological functions and interactions. Herein we report on the demographic and ecological outcomes of a five-decade-long population restoration program for a critically endangered species of ‘‘ecosystem engineer’’: the endemic Espan _ola giant Galapagos tortoise (Chelonoidis hoodensis).