Biology
The Level Mountain Range contains a large variety of species. In 1978, more than 400 caribou were estimated in the Level Mountain Range but the herd was thought to be decreasing because of poor recruitment. Calf percentages averaged less than 10%. Approximately 350 caribou were counted in 1980, but only half that number were actually estimated. Wolf density was estimated at about 1/100 km2, and was thought to be similar to the initial density of the 40 km (25 mi) long Horseranch Range to the northeast. Wolf predation is considered to be an instrumental factor in producing the current pattern of caribou habitat use. Wolves were most commonly observed in 1980 in the valleys, but mountainous areas were also used for denning and hunting. Grizzly bears were also common in the mountainous portions of the Level Mountain Range and are potentially significant predators of young caribou calves. Other hoofed mammals included mountain goat, Dall Sheep, and moose.
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