Tundra

Biotic Factors

Biotic Factors

Biotic Factors

• Polar bear
• Polar bears live in one of the planet's coldest environments and depend on a thick coat of insulated fur, which covers a warming layer of fat. Fur even grows on the bottom of their paws, which protects against cold surfaces and provides a good grip on ice.
• They have special adaptations, or features that help them live in that habitat, like webbed feet, a layer of fat, fur that helps them blend in and dry off, and black skin to absorb the sun's heat. They are so well adapted to the Arctic that they have to be careful not to overheat.

Abiotic Factors

• rainfall-Tundra regions typically get less than 25 centimeters (10 inches) of precipitation annually, which means these areas are also considered deserts.
• soil-The soil in the Arctic is largely permafrost or soil that remains frozen year-round, leaving only a thin surface layer of thawed soil in summer for plant roots to grow in.
• wind-Winds in the alpine tundras are often quite strong; they may average 8 to 16 km (5 to 10 miles) per hour only 60 cm (about 24 inches) above ground level, and they quite frequently reach 120 to 200 km (about 75 to 125 miles) per hour in high reaches of the Rocky Mountains and the Alps.
• severe disturbances-Climate-driven changes in these harsh lands at the ends of the ... The tundra is also slow to repair itself from physical disturbances, .

Additional information:

• diagrams-Aklavik, Canada. Monthly Temperature and Precipitation from 1970 - 2000. Month, Average Monthly Precipitation (mm), Average Monthly Temperature

Resources

• Blue planets,The wild classroom,Earthobservatory,google