After gray wolves nearly died out at the Isle Royale National Park in Michigan, the species is increasing in numbers again thanks to authorities introducing more wolves into the region.
are thriving at Isle Royale National Park five years after authorities began a last-ditch attempt to prevent the species from dying out on the Lake Superior island chain, scientists said Wednesday.
"It’s been hugely successful," said study co-leader Sarah Hoy, a research assistant professor and animal ecologist."That’s what everyone was hoping for." A pack of wolves is seen after killing a moose at Michigan’s Isle Royale National Park. Gray wolves are thriving at the park again five years after almost dying out.
Some experts said they should be allowed to die out, as have other species that once occupied the island, including Canada lynx and woodland caribou, which had the same predator-prey relationship as today's wolves and moose. Park officials and Michigan Tech scientists contend the absence of a top-of-the-food-chain predator of moose and beaver would have been ruinous for the island's forest. Even now, its balsam firs continue to deteriorate from moose browsing and an attack of tree-killing spruce budworm, the report said.
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