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Within the tundra, some dominant plant species include lichen, cotton grass, and Arctic willow. Lichens. Lichens dominate the tundra as the region's major primary producer. A symbiotic combination of algae and fungi, a lichen is able to survive in the harsh conditions of the tundra (Biodiversity Institute of Ontario et al. 2010).
As of 2005, arctic vegetation covered approximately 5 × 10 ^ 6 km 2 (1.9 × 10 ^ 6 sq mi) of land. [2] The area of Arctic vegetation decreased by approximately 1.4 × 10 ^ 6 km 2 (0.54 × 10 ^ 6 sq mi) from 1980 to 2000, with a corresponding increase in the boreal forest (taiga). [3] This decrease is linked to the warming of the Arctic due to ...
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. [3] Tundra vegetation is composed of dwarf shrubs, sedges, grasses ...
The establishment of a new cushion plant on a windy slope, or freshly exposed Arctic tundra is not a common event. The established plants may be hundreds of years old, although they extend only a few inches above the surface. The plants are spreading and are wider than they are tall, but they are not extensive above the ground.
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]
In the far north, a band of Arctic tundra encircles the shore of the Arctic Ocean. The ground beneath this land is permafrost (frozen year-round). In these difficult growing conditions, few plants can survive. South of the tundra, the boreal forest stretches across North America and Eurasia.
The Arctic tundra has historically helped reduce global emissions. But rising temperatures and wildfires in the region are changing that, scientists say. Arctic tundra becoming a source of carbon ...
The area is one of the "most productive" [5] in the United States for petroleum extraction including a 9 million hectare area reserved for this activity. [6] As Arctic seas warm and ice recedes, it is believed that these areas contained within the Arctic coastal tundra may reveal some of the largest petroleum reserves in the world. [7] [8] [9]
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