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Where to now? An uncertain future for Jamaica's largest endemic vertebrate

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More than 20 years after the endemic Jamaican iguana Cyclura collei was removed from the list of extinct Caribbean iguanas, its fate is again tenuous. Since its rediscovery in 1990, conservation efforts have reversed the species’ extinction trajectory. However, it remains a Critically Endangered species. Surviving in just a few square kilometres of the Hellshire Hills in Jamaica, initial estimates suggested as few as 50 adults remained. The remnant population clung to the rugged limestone cliffs in Jamaica’s dry forest interior, which provided some level of protection from hunting and exotic predators. Because of high rates of predation, juvenile recruitment was essentially non-existent. Population viability models in 1993 concluded that the remnant, ageing population was doomed unless innovative conservation interventions could be implemented.

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