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Arctic Tundra

The Arctic tundra is a cold, vast, treeless area of low, swampy plains in the far north around the Arctic Ocean. It includes the northern lands of Europe (Lapland and Scandinavia), Asia (Siberia), and North America (Alaska and Canada), as well as most of Greenland. Another type of tundra is the alpine tundra, which is a biome that exists at the tops of high mountains.

Special features:

This is the earth's coldest biome. Since the sun does not rise for nearly six months of the year, it is not unusual for the temperature to be below -30°F in winter. The earth of the Arctic tundra has a permanently frozen subsoil, called permafrost, which makes it impossible for trees to grow. Frozen prehistoric animal remains have been found preserved in the permafrost.

In summer, a thin layer of topsoil thaws and creates many pools, lakes, and marshes, a haven for mosquitoes, midges, and blackflies. More than 100 species of migrant birds are attracted by the insect food and the safe feeding ground of the tundra. Other animals that live in this biome include polar bears, Arctic foxes, caribou, and grey wolves. Plants that you might find include small shrubs and cushion plants, and the lichen which cover the many rocks on the tundra's terrain. The Arctic is also famous for the beauty of its flowers during early autumn.


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Related content from HighBeam Research on: Arctic Tundra

Responses of Arctic tundra to experimental and observed changes in climate. (Ecology)

Snow-shrub interactions in Arctic tundra: A hypothesis with climatic implications (Journal of Climate)

Quantitation of endorhizal fungi in High Arctic tundra ecosystems through space and time: the value of herbarium archives.(Report) (Canadian Journal of Botany)

PHYSIOLOGICAL MODELS FOR SCALING PLOT MEASUREMENTS OF [CO.Sub.2] FLUX ACROSS AN ARCTIC TUNDRA LANDSCAPE (Ecological Applications)

Benthic biomonitoring in Arctic Tundra Streams: a community-based approach in Iqaluit, Nunavut, Canada.(Report) (Arctic)

Mountain Tops Ltd.: From Football's Frozen Tundra To The Arctic Tundra.(Fabricator Profile) (Surface Fabrication)

Global Forest Watch: between the arctic tundra to the north and the temperate forests to the south lies a mosaic of mostly coniferous forest, wetlands, rivers, and lakes. Unfortunately, a project to accurately map these northern forests indicates that this once-believed endless sea of unbroken wilderness is fast becoming a myth. (Geospatial Solutions)

Mycorrhizal fungi supply nitrogen to host plants in arctic tundra and boreal forests: [sup.15]N is the key signal.(Report) (Canadian Journal of Microbiology)

Russia's Frigid Heart: A Near-Permanently Frozen Region of Rivers, Mountains, Tundra and Forest Enclosed by the Ural Mountains in the West and the Pacific and Arctic Oceans in the East, Siberia Is a Place of Extremes. This Selection of Photographs from the Archives of the Royal Geographical Society Taken around the Turn of the 20th Century, Capture Scenes from across the Mighty Region at a Time When It Was Little Known outside of Russia (Geographical)

A small gem: Iqaluit may seem like an outpost on the remote Arctic tundra to most Canadians, but as Bruce Sach discovers, it's a bustling capital city with deep roots. (The Beaver: Exploring Canada's History)

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