Did you notice that there was a major article in the Detroit Free Press in August about how global warming might hurt the moose population on Isle Royale, and thus hurt the wolf population in turn? The article is available at this link, if you missed it:
Much the same information, in briefer, also appeared in a Backpacker magazine article that came out this summer about the biggest coming changes in America's national parks. This article might have prompted the Free Press to give John Vucetich, the leader of the moose-wolf research study nowadays, a call. Isle Royale made Backpacker's list of their Top Ten for the possibility that moose might die out on the island. The island has without question been much warmer overall, and year round, over the past few years, though there have been a couple hard, cold winters as well over the past 15-20 years. This year I saw more sign than ever before of the decline in the moose over the past decade. There were wide stands of young balsam, which moose have browsed heavily, in many areas. I even found several small American yew bushes on the main island and the outer islands of Rock Harbor in places where they would be easily acccessible to moose. The yew was long ago eradicated on the main island because of moose, which favor the yew over just about anything else. Well, the yew is starting to come back. I have a couple photos of the yews I found, but I don't have them immediately available as I write this post.