DENVER – Lions stalking deer in the stubble of a Nebraska corn field. Elephants trumpeting across Colorado’s high plains. Cheetahs slouching through the West Texas scrub.
Prominent ecologists are floating an audacious plan to transplant African wildlife to the Great Plains of North America.
Their proposal is being greeted with gasps and groans from other scientists and conservationists who recall previous efforts to relocate foreign species halfway around the world, often with disastrous results.
The authors contend it could help save species from extinction in Africa, where protection is spotty and habitat vanishing.
They also believe the relocated animals could restore biodiversity on this continent to a condition closer to what nature was like before humans overran the landscape.
They suggest starting with zoo animals. The perimeters of newly created reserves would be fenced.
“We aren’t backing a truck up to some dump site in the dark and turning lose a bunch of elephants,” insisted Cornell University ecologist Harry W. Greene, one of the plan’s authors.
While most modern African species never lived on the American prairie, the scientists believe that today’s animals could duplicate the natural roles played by their departed, even larger cousins – mastodons, camels and saber-toothed cats – that roamed for more than 1 million years alongside antelope and bison.
Relocating large animals to vast ecological parks and private reserves over the next century would begin to restore the balance, they said, while offering new ecotourism opportunities to a withering region.
The scientists’ plan appears in today’s issue of the journal Nature. It echoes the controversial 1987 Buffalo Commons proposal by Frank and Deborah Popper of Rutgers University to cut down fences of abandoned farms and reconnect corridors for native prairie wildlife.
A similar Pleistocene park is being established in Siberia. Scientists there are importing bison from Canada to replace the native variety that vanished about 500 years ago.
Some ecologists said it is important to try such a bold plan. Otherwise, they said, hundreds more species are likely to go extinct in coming decades and entire ecosystems like grasslands will fundamentally change.
“We’re beginning to get backed into a corner,” said Terry Chapin of the University of Alaska-Fairbanks. “It’s something worth trying.”
But the plan is triggering criticism.
Scientists point to Australia, which was overrun by rabbits and poisonous cane toads after misguided species relocations.
“It is not restoration to introduce animals that were never here,” said University of Washington anthropologist Donald K. Grayson. “Why introduce Old World camels and lions when there are North American species that could benefit from the same kind of effort?”
Given the political struggle over the reintroduction of wolves in the West, others wonder how African lions would be at home on the range.
“How many calves or lambs would it take to feed a family of lions for a month?” said Steve Pilcher, executive vice president of the Montana Stockgrowers Association. “We sort of know what it takes for wolves, but something tells me we would be in a whole new ballgame.”
Some conservationists said the plan would further damage the prospects of African species on their native turf, as well as that continent”s hopes for sustainable economic development.
“Such relocations would affect future tourism opportunities,” said Elizabeth Wamba, the East Africa spokeswoman for the International Fund for Animal Welfare in Nairobi, Kenya. “The welfare of the animals would have been reduced by transporting and exposing them to different eco-climatic conditions.”
The idea of “rewilding” the Great Plains grew from a retreat at Ladder Ranch near Truth or Consequences, N.M. The 155,550-acre property is owned by media mogul and conservationist Ted Turner.
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