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The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline. The tundra soil is rich in nitrogen and phosphorus . [ 2 ] The soil also contains large amounts of biomass and decomposed biomass that has been stored as methane and carbon dioxide in the permafrost , making the tundra soil a ...
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 ...
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]
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]
There is a wide source of vegetation in the polar region but there are few species in common in the southern and northern polar regions. The Arctic consists of desert and tundra vegetations. The desert vegetation consists of algae, lichens, and mosses. Lichens are the most dominant plants.
The climate of the region is known to be intensely cold during the year due to its extreme polar location. [5] The area has tundra, Arctic vegetation, [3] glaciers, and, for most of the year, is covered in thick blankets of snow and ice. [5] It is home to various species of plants, and land, air and marine animals. [6]
The Summary. Increasingly frequent and severe heat waves in the Southwest are damaging some desert plants known for thriving in harsh conditions.
Grasslands are dominated by grasses and other herbaceous plants. Savannas are grasslands with scattered trees. Shrublands are dominated by woody or herbaceous shrubs. Large expanses of land in the tropics do not receive enough rainfall to support extensive tree cover.