Search results
Results from the WOW.Com Content Network
According to the US Energy Information Administration, the arctic tundra holds an estimated 13% or 90 billion barrels of the world's undiscovered conventional oil sources. However, there are a number of challenges to oil exploration, drilling, and transportation in an arctic tundra environment that limits the profitability of the venture. [15]
Tundra ecosystems developed in the Northern Hemisphere toward the end of the Pliocene (3.6 ma), prior to this point the Arctic was predominantly covered with forests and shrublands which extended northward to the coastline of the Arctic Ocean. However, during the middle Pleistocene this vegetation pattern shifted to a graminoid tundra steppe. [18]
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
Arctic ecology is the scientific study of the relationships between biotic and abiotic factors in the arctic, the region north of the Arctic Circle (66° 33’N). [1] This region is characterized by two biomes: taiga (or boreal forest ) and tundra . [ 2 ]
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
Kalaallit Nunaat high arctic tundra: Greenland: Kalaallit Nunaat low arctic tundra: Greenland: Low Arctic tundra: Canada: Middle Arctic tundra: Canada: Ogilvie–MacKenzie alpine tundra: Canada, United States: Pacific Coastal Mountain icefields and tundra: Canada United States: Torngat Mountain tundra: Canada: Palearctic realm; Arctic desert ...
Other mammals include lemmings, polar bear, walrus, beluga whale, snowshoe hare and Arctic hare, red fox, grey wolf, Arctic ground squirrel and seals. The coast is also home to many breeding waterbirds including snow goose , spectacled eider , Steller's eider , king eider , red-throated loon , [ 3 ] pacific loon , [ 4 ] and yellow-billed loon .
The ecoregion to the north is the 'High Arctic tundra' (colder and wetter), to the south is the Low Arctic tundra (warmer and wetter). [2] The bedrock under the western extent is Paleozoic and Mesozoic sedimentary rock with a relatively flat cover of glacial moraines and marine deposits.