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In physical geography, tundra (/ ˈ t ʌ n d r ə, ˈ t ʊ n-/) is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. There are three regions and associated types of tundra: Arctic, [2] Alpine, [2] and Antarctic. [3] Tundra vegetation is composed of dwarf shrubs, sedges, grasses, mosses, and lichens ...
Animal species that are endangered in the tundra include the Arctic fox, caribou, and polar bears. These animals have been endangered due to overhunting, an infestation of disease, loss of diet and habitat due to climate change, and human destructive activities, such as searches for natural gas and oil, mining, and road building. [10]
Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alpine tundra gets lower until it reaches sea level, and alpine tundra merges with polar tundra .
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]
Reindeer live in the Arctic tundra (a frigid treeless plain) and the northern boreal woodlands that border the tundra. This type of biome is found in Alaska, Canada’s Northern Coast and islands ...
This area supports wetland plants especially sedges and grasses, mosses and lichens, and right on the coast there are peat bogs.Trees such as dwarf birch, willows, northern Labrador tea and alders grow in the warmer areas of the region, the Mackenzie River delta and the Yukon coast.
In the south with a marginally relatively milder and wetter climate, the landscape may also feature stands of wood rush and wire rush . [ 6 ] Mammals in the ecoregion include muskox ( Ovibos moschatus ), arctic hare ( Lepus arcticus ), arctic fox ( Alopex lagopus ), caribou ( Rangifer tarandus '), Polar bears ( Ursus maritimus ), and high ...
The slopes are covered with a variety of lichens and other tundra plants, depending on altitude and drainage. The low-lying, wetter areas are similar to the surrounding Beringia lowland tundra ecoregion but the uplands are generally drier and dominated by sedges such as Eriophorum vaginatum and scrub such as the ericas Arctostaphylos alpina, Vaccinium vitis-idaea or Empetrum nigrum or mountain ...