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The tundra biome

The tundra biome
Online exhibits : The world's biomes The tundra biome Tundra is the coldest of all the biomes. Tundra comes from the Finnish word tunturi, meaning treeless plain. It is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons. Dead organic material functions as a nutrient pool. Characteristics of tundra include: Extremely cold climate Low biotic diversity Simple vegetation structure Limitation of drainage Short season of growth and reproduction Energy and nutrients in the form of dead organic material Large population oscillations Tundra is separated into two types: Arctic tundra Arctic tundra is located in the northern hemisphere, encircling the north pole and extending south to the coniferous forests of the taiga. All of the plants are adapted to sweeping winds and disturbances of the soil. Animals are adapted to handle long, cold winters and to breed and raise young quickly in the summer. Alpine tundra Related:  Seasonal Changes

Tundra In physical geography, tundra is type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands", "treeless mountain tract".[1] There are three types of tundra: arctic tundra,[2] alpine tundra,[2] and Antarctic tundra.[3] In tundra, the vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline. Arctic Tundra tends to be windy, with winds often blowing upwards of 50–100 km/h (30–60 mph). The biodiversity of tundra is low: 1,700 species of vascular plants and only 48 species of land mammals can be found, although millions of birds migrate there each year for the marshes.[5] There are also a few fish species. Relationship with global warming Antarctic Alpine Main article: Alpine tundra See also

Tundra Biome The Tundra Biome In the tundra, conditions are cold, with an annual average temperature less than 5 C, and precipitation (mostly in the form of snow) less than 100 mm per year (see figure at right). The summer is brief, with temperatures above freezing lasting for only a few weeks at most. However, this "warm" summer coincides with periods of almost 24 hour daylight, so plant growth can be explosive. The map below shows the tundra spreading across the northern hemisphere. The biggest threat, however, is from oil and gas development and the resulting global warming. Back Tundra Biome - Tundra Climate (E) | The Cold Climate | The Köppen Climate Classification System | Resources In: The Cold Climate Updated 29 Jan 2013 Did you know that the Arctic Tundra is the world's youngest biome? It was formed 10,000 years ago. Located at latitudes 55° to 70° North, the tundra is a vast and treeless land which covers about 20% of the Earth's surface, circumnavigating the North pole. It is usually very cold, and the land is pretty stark. Tundra comes from the Finnish word "tunturia", which means a barren land. The main seasons are winter and summer. The Arctic tundra is also a windy place and winds can blow between 30 to 60 miles (48 to 97 kilometers) per hour. The tundra is basically like a desert when it comes to precipitation. There is barely any vegetation in the tundra, only about 1,700 different species, which isn't very much. Surprisingly there are animals in the tundra. The tundra is one of Earth's three major carbon dioxide sinks. The tundra is a very fragile environment. Pollution from mining and drilling for oil has polluted the air, lakes and rivers.

KDE Santa Barbara Location | Weather | Plants | Animals | People | Games | Links LOCATION: The tundra biome is the coldest of all biomes. It is also quite big. WEATHER: The tundra is the coldest and the driest of all the biomes on Earth. for only 6 - 10 weeks. PLANTS: You would think that plants would never live or survive in this biome, but the answer is quite a surprise. ANIMALS: You may think that the tundra is too chilly for animals, but guess what - it’s not. most dangerous animal is that lives in the tundra? Animals who live in the tundra have special adaptations to survive. PEOPLE AND THIS BIOME: The tundra may seem tough, but it is a very sensitive environment. There is also much we can learn from the tundra. UC Berkeley - The Tundra Biome Biomes - Thinkquest Tundra Tundra Biome Geography for Kids: Tundra Blue Planet Biomes: Tundra Bureau of Land Management: Northern Exposures Back to Biomes Index

Forest Video & Map GREEN Click on a biome on the above graph for more information, informative videos, and links to scientist profiles, travel information, lesson plans and species profiles for each region. We'd like to know where you're coming from. If you've used this site for a class project or browsing for fun, add yourself to our map and communicate with other "ecogeeks" Lennox Island residents may be the first climate change refugees in Canada | Inhabitat - Green Design, Innovation, Architecture, Green Building As sea level rise threatens homes, indigenous people living on tiny Lennox Island face the possibility of becoming Canada‘s first climate change refugees. 450 Mi’kmaq people reside there, and have tried to protect their coasts with rock. Ultimately, however, loss of land will likely force them to relocate. Lennox Island, which is right by Prince Edward Island, is losing land as sea levels creep upwards. Related: Tiny Alaskan village votes to abandon 400-year-old ancestral home because of climate change Residents have stacked boulders on the shores of the island in an attempt to guard against erosion, but such a tactic will likely only work for so long. Indigenous and Northern Affairs Canada will pay for erosion surveys but hasn’t yet offered money to help the residents relocate or even place boulders on the island shores. Via VICE Images via Wikimedia Commons and Larry on Flickr

Tundra Landforms Pictures Click here to show (or hide) search and display options [ For a large image and details: click on photo to stay in current window, click on photo ID to open new window.] There are 40 pictures on this page out of 172 pictures of Tundra Landforms, available as stock photos and fine art prints.

Earth Floor:Tundra Biome Arctic Tundra Arctic tundra is found across northern Alaska, Canada, and Siberia. This biome has long cold winters and short cool summers. The Arctic tundra has low precipitation (less than 10 inches per year) and dry winds. These conditions make the Arctic tundra a desert-like climate (see climograph). One unique characteristic of the Arctic tundra is permafrost--ground that is permanently frozen. Curiously, during the summer Arctic tundra is characterized by lots of surface water. Back | Next

*Tundra encroachment by tundra due to climate change In Alaska, trees growing at the very edge of their northern range may be influenced by warming climate. Will they eventually take over the tundra beyond? Scientists from Columbia University’s Lamont-Doherty Earth Observatory and other institutions are studying how these remote ecosystems may change. Here’s a video from scientists at the northern edge of the treeline. Landforms of the Tundra Plant cover, rocks and bodies of water retard natural thawing and freezing patterns of the ground. The ground is abnormally pushed and pulled, producing tiny hills, valleys, slopes and porous regions. Frost mounds exist extensively on open terrain and consist of 10 to 15 feet ice cores covered by soil or peat that do not penetrate permafrost.