"History has shown us that conservation can achieve the impossible, as anyone who knows the story of the White Rhinoceros in southern Africa knows", remarked Dr Simon Stuart, Chair of IUCN's Species Survival Commission and an author on the study. "But this is the first time we can demonstrate the aggregated positive impact of these successes on the state of the environment."
The study highlights 64 mammal, bird and amphibian species that have improved in status due to successful conservation action. This includes three species that were extinct in the wild and have since been re-introduced back to nature: the California Condor, Gymnogyps californianus, and the Black-footed Ferret, Mustela nigripes, in the United States, and Przewalski's Horse, Equus ferus, in Mongolia.
Conservation efforts have been particularly successful at combatting invasive alien species on islands. The global population of Seychelles Magpie-robin, Copsychus sechellarum, increased from fewer than 15 birds in 1965 to 180 in 2006 through control of introduced predators, like Brown Rat, Rattus norvegicus, and captive-breeding and re-introduction programmes. On Mauritius, six bird species have undergone recoveries in status, including the Mauritius Kestrel, Falco punctatus, whose population has increased from just four birds in 1974 to nearly 1,000.
In South America, protected areas and a combination of the Convention on International Trade in Endangered Species (CITES) and the Vicua Convention helped spark the recovery of the Vicua Vicugna vicugna. Similarly, legislation enacted to ban commercial whaling has seen the Humpback Whale, Megaptera novaeangliae, move from Vulnerable to Least Concern. Unfortunately, very few amphibians have yet shown signs of recovery, but international efforts are escalating, including a programme to reintroduce the Kihansi Spray Toad, Nectophrynoides asperginis, back into the wild in Tanzania.
The authors caution that their
|Contact: Lynne Labanne|