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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, [2] Alpine, [2] and Antarctic. [3] Tundra vegetation is composed of dwarf shrubs, sedges, grasses, mosses, and lichens ...
As an indicator biome, the tundra is a crucial part of the whole global climate system and can help predict the changes the rest of the world will face. The Earth depends on regulating mechanisms and air circulation patterns the tundra provides to keep climates steady worldwide.
Terrestrial ecoregions of the world. This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial, freshwater, and marine ecoregions.
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 .
This page features a list of biogeographic provinces that were developed by Miklos Udvardy in 1975, [1] [2] later modified by other authors. [according to whom?] Biogeographic Province is a biotic subdivision of biogeographic realms subdivided into ecoregions, which are classified based on their biomes or habitat types and, on this page, correspond to the floristic kingdoms of botany.
Download as PDF; Printable version; ... Geography; Area: 98,200 km 2 (37,900 sq mi) ... The Arctic coastal tundra is an ecoregion of the far north of North America, ...
The polar bear (Ursus maritimus) is the dominant carnivore in the tundra. The tundra is a sub-Arctic zone with long, cold winters and short, warm summers. [5] [29] Precipitation is low. Soil a meter below ground and deeper is permanently frozen , which does not allow water to drain easily through the soil, so it collects in shallow pools. Trees ...
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: North Victoria Land tundra: Victoria Land: Northeast Antarctic Peninsula tundra: Antarctic Peninsula: Northwest Antarctic Peninsula tundra ...