The islands, lying between the Antarctic and Subtropical Convergences and the seas, have a high level of productivity, biodiversity, wildlife population densities and endemism among birds, plants and invertebrates.
In the wild, it is the most widespread species of gorilla, according to the World Wildlife Fund (WWF), with a estimated population of 100-200, 000 individuals.
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To appease opponents of the program, the wildlife service designated the wolves as an "experimental" population, which meant they could be hunted if they became a menace to livestock.
"I have every belief that we will ultimately be increasing the barn owl population of Somerset and helping a diversity of other wildlife along the way, " Mr Sperring added.
Defa and the Manx Wildlife Trust have already commenced surveys to monitor the island's ash population.
The decision by US Fish and Wildlife Service comes after a 20-year programme to grow the wolf population.
The park is home to two-thirds of the world's one-horned rhino population and also has a large number of elephants, tigers and other wildlife.
Conservation efforts have led to an increase in the manatee population, the commission said, and the U.S. Fish and Wildlife Service is working on a rule that would reclassify the manatee from endangered to threatened.
The Midwestern wolf population has reached the recovery goals set by the U.S. Fish and Wildlife Service in 1978.
Undamming the Elwha River is expected to boost its salmon population from 3, 000 to 400, 000, which will attract bears, eagles and other wildlife that thrived before the river was dammed in 1914.
Moemi Batshabang, assistant director for management and utilisation in Botswana's wildlife department, believes the sale is necessary for his country and that culling is unavoidable because of a growing elephant population.
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