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The Interior Yukon–Alaska alpine tundra ecoregion (WWF ID: NA1111) covers alpine, sub-alpine, and boreal forest areas along the cordillera (chain of mountain ranges) of Interior Alaska and south-central Yukon Territory. Geologically, they are the disjunct uplands of the Yukon–Tanana terrane plus a southern extension of the Brooks Range. The ...
At higher elevations this ecoregion has a tundra climate (Köppen ET ) with cold summers and very cold winters. Annual precipitation ranges from about 2,000 mm (79 in) to over 7,000 mm (280 in), the majority of which falls as snow .
This is a hilly area that lies between the boggier Arctic coastal tundra to the north and the Brooks Range to the south, and stretching from the Chukchi Sea east across northern Alaska to the border with Canada's Yukon Territory. The Noatak River valley is the only forested area. [2]
Alaska has two species of frogs. They are the Columbia spotted frog and wood frog. Alaska also is inhabited by two introduced frog species, the Pacific tree frog (also referenced as the Pacific chorus frog), and the red-legged frog. [1] The only species of toad in Alaska is the western toad. [30]
Since the tundra has such a harsh environment, the animals who live here have adapted in a way to call the tundra their home. The keystone species of the tundra can be as small as a lemming to as large as a musk ox. The low biodiversity means that fluctuation in individual animals can substantially affect the entire ecosystem.
90% of natural habitat remains intact, except for the vicinity of Utqiaġvik, Alaska and the oil fields of Prudhoe Bay, Alaska and Kuparuk which are expanding along the coast and may in future spread into the Arctic National Wildlife Refuge, which is the only major protected area on this coast (see Arctic Refuge drilling controversy), and on ...
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The little brown bat is the most common and widespread bat in Alaska. [7] As with other myotis species in Alaska, little brown bats often roost in abandoned buildings and old mines; they may also be found roosting alone in trees or rock crevices. [7] Little brown bats have been observed hibernating in Southeast Alaska and Kodiak Island. [7]