Biomes Essay

This essay has a total of 554 words and 3 pages.


Tundra is the coldest of all the biomes. Tundra comes from the Finnish word tunturia,
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. The two major nutrients are nitrogen and
phosphorus. Nitrogen is created by biological fixation, and phosphorus is created by
precipitation. Tundra is separated into two types: arctic tundra and alpine tundra.

The characteristics of the tundra are as follows:
1. Extremely cold climate
2. Low biotic diversity
3. Simple vegetation structure
4. Limitation of drainage
5. Short season of growth and reproduction
6. Energy and nutrients in the form of dead organic material
7. Large population oscillations
Arctic tundra is located in the northern hemisphere, encircling the North Pole and
extending south to the Coniferous forests of the Taiga. The arctic is known for its cold,
desert-like conditions. The growing season ranges from 50 to 60 days. The average winter
temperature is -34° C (-30° F), but the average summer temperature is 3-12° C (37-54°
F), which enables this biome to sustain life. Rainfall may vary in different regions of
the arctic. Yearly precipitation, including melting snow, is 15 to 25 cm (6 to 10 inches).
Continues for 2 more pages >>