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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 , mosses , and lichens .
In addition to species such as lichens, cotton grass, and Arctic willows, shrubs, sedges, lichens, mosses, and vascular plants dominate the tundra plant community (Folch and Camarasa 2000). Despite the tundra eco-region's reputation of being a cold and desolate ‘polar desert’, it is actually a varying landscape supporting a diverse amount ...
Alpine tundra occurs at high enough altitude at any latitude.Portions of montane grasslands and shrublands ecoregions worldwide include alpine tundra. Large regions of alpine tundra occur in the North American Cordillera and parts of the northern Appalachian Mountains in North America, the Alps and Pyrenees of Europe, the Himalaya and Karakoram of Asia, the Andes of South America, the Eastern ...
Arctic vegetation is largely controlled by the mean temperature in July, the warmest month. Arctic vegetation occurs in the tundra climate, where trees cannot grow.Tundra climate has two boundaries: the snow line, where permanent year-round snow and ice are on the ground, and the tree line, where the climate becomes warm enough for trees to grow. [7]
This plant is a low, spreading shrub growing up to 15 centimetres (5.9 inches) tall. The leaves are 2 to 6 centimetres (0.79 to 2.36 inches) long and marcescent , remaining on the shrub as they die. The inflorescence is a hairy, glandular raceme of up to 6 flowers, each about half a centimeter long.
Meanwhile, the Arctic tundra was the second-greenest since records began in 2000, indicating that more shrubs had taken root and expanded into new terrain.
As a result, the plant's appearance varies; the female catkins are red-coloured, while the male catkins are yellow-coloured. [5] [6] Despite its small size, it is a long-lived plant, growing extremely slowly in the severe arctic climate; one in eastern Greenland was found to be 236 years old. [5] Hybrids with Salix arcticola and Salix glauca ...
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity.
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