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Caribou herd ranges. Porcupine caribou's 1,500 miles (2,400 km) annual land migration between their winter range in the boreal forests of Alaska and northwest Canada over the mountains to the coastal plain and their calving grounds on the Beaufort Sea coastal plain, [45] is the longest of any land mammal on earth. In 2019, the herd size was ...
Horses on the Pryor Mountains Wild Horse Range in Montana. The BLM distinguishes between "herd areas" (HA) where feral horse and burro herds existed at the time of the passage of the Wild and Free-Roaming Horses and Burros Act of 1971, and "Herd Management Areas" (HMA) where the land is currently managed for the benefit of horses and burros, though "as a component" of public lands, part of ...
In 2008, the Teshekpuk Lake caribou herd had 64,107 animals and the Central Arctic caribou herd had 67,000. [39] [40] By 2017, the Teshekpuk herd's numbers, whose calving grounds are in the region of the shallow Teshekpuk Lake, [41] had declined to 41,000 animals. [41]
In 2001, proponents of the development of the oil fields at Prudhoe Bay and Kuparuk, which would be approximately 60 miles (97 km) west of the refuge, argued that the Central Arctic caribou herd had increased its numbers "in spite of several hundred miles of gravel roads and more than a thousand miles of elevated pipe."
The new data from the Alaska Department of Fish and Game shows that the Western Arctic Caribou Herd population is down to an estimated 164,000 animals — an almost 13% decrease over ...
Kobuk Valley National Park is a national park of the United States in the Arctic region of northwestern Alaska, located about 25 miles (40 km) north of the Arctic Circle. The park was designated in 1980 by the Alaska National Interest Lands Conservation Act to preserve the 100 ft (30 m) high Great Kobuk Sand Dunes [ 3 ] and the surrounding area ...
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Migratory caribou herds are named after their birthing grounds, in this case the Porcupine River, which runs through a large part of the range of the Porcupine herd. [41] [42] In 2001, some biologists feared development in the Refuge would "push caribou into the foothills, where calves would be more prone to predation."