By the 1970s Great Lakes wolves survived only in northeastern Minnesota and Lake Superior's Isle Royale National Park ... In 2012, for example, Minnesota’s wolf population plummeted by more than 25 ...
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Remote Lake Superior island wolf numbers are stable but moose population declining, researchers sayIsle Royale is a 134,000-acre (54,200-hectare) island situated in far western Lake Superior between Grand Marais, Minnesota ... before they left shows the wolf population stands at 30 animals ...
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