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The island’s appeal is obvious. Based on aerial surveys in February, Patterson estimates it holds 250 to 300 “predator-naive” woodland caribou, which are smaller than moose but bigger than deer. Working for the Ontario Ministry of Natural Resources and Forestry, Patterson and his colleagues radio-collared all three Michipicoten wolves in February and are preparing for a potential Isle Royale redux. Patterson intends to describe the plans next week at the Midwest Wolf Stewards meeting in Ashland, Wisconsin. As on Isle Royale, where the carnivores kept the moose population in check and so helped preserve the vegetation, “the wolves are expected to have a profound impact,” Patterson said.