The effects of climate change on woodland caribou have not been studied. The islands are notable for having Ontario's largest herd of boreal woodland caribou. The Athabasca Plain ecoregion supplies lichen as winter forage for the woodland caribou. The lake basin provides an important habitat for woodland caribou. Climate change may have negative potential for woodland caribou as well. It is unlike most woodland caribou in that it is not sedentary. Other North American populations, the boreal woodland caribou for example, are largely sedentary. The boreal woodland caribou are the largest caribou in Canada. Wild forest reindeer, are similar to the woodland caribou in North America. Quebec-Labrador bull caribou antlers can be significantly larger and wider than other woodland caribou. Woodland caribou were designated as threatened in 2002. Michipicoten Island has plentiful wildlife (notably beaver, woodland caribou, and birds). Mastodons and woodland caribou took over the trail blazing begun by earlier mammals. The flooding of the reservoir destroyed large areas of habitat for the threatened Woodland Caribou. There are two populations of woodland caribou, the forest-tundra ecotype and the sedentary forest-dwelling ecotype.