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The location of the tundra in North America is highlighted in light blue. The Tundra of North America is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas.
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 tundra, [ 2 ] alpine tundra , [ 2 ] and Antarctic tundra.
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.
The Canadian Arctic tundra is a biogeographic designation for Northern Canada's terrain generally lying north of the tree line or boreal forest, [2] [3] [4] that corresponds with the Scandinavian Alpine tundra to the east and the Siberian Arctic tundra to the west inside the circumpolar tundra belt of the Northern Hemisphere. [5]
The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs. From beaver ...
The tundra has become a source of emissions, rather than a carbon sink, the authors said. The Arctic is heating up far faster than places at lower altitudes as melting ice reflects less radiation ...
Formed by the coniferous taiga woods of the Arctic, the Arctic tundra encircles the North Pole. It spans from Alaska to Canada to Russia to Greenland to Iceland. Winters in this area are long and ...
Adelie Land tundra: Adélie Land: Central South Antarctic Peninsula tundra: Antarctic Peninsula: Dronning Maud Land tundra: Queen Maud Land: East Antarctic tundra: Eastern Antarctica: Ellsworth Land tundra: Ellsworth Land: Ellsworth Mountains tundra: Ellsworth Mountains: Enderby Land tundra: Enderby Land: Marie Byrd Land tundra: Marie Byrd Land ...