By : Shamaryee Dalton
Abiotic and biotic factors
The biotic factors are fungi moss shrubs insects fish birds and other mammals . The abiotic factors are temperature wind rain sunlight snow soil rocks and permafrost . The biotic factors depend on the abiotic factors and each other for survival .
Climate is the weather conditions prevailing in an area in general or over a long period . Tundra climate is cold and windy rainfall is scant . Tundra lands are snow-covered until summer brings flowers . Winter temperatures don't reach about 20 degrees Fahrenheit and average -20 degrees to -30 degrees.
Plant life in the tundra is plentiful . Some of the plants are bearberry , arctic moss , caribou moss , and the diamond leaf willow . The bearberry uses adaption to stay out of the way of the ripping tundra wind . Caribou mosses grow on the ground and on rocks .
Some of the animals in the tundra are bald eagles , polar bears , white wolves , and grizzly bears. White wolves have a thick undercoat of soft fur over a coat of long thick hair , to help reduce heat loss the have small rounded ears a short muzzle and shorter legs than other wolves . Polar bears have a thick oily fur coat and a layer of blubber under the skin which protects them through the cold winter .
A food web is system of interlocking food-chains . The picture below is a tundra food web in this food webs in shows the feeding relationships and the level .
- Mutalism - When both species benefit.
- Commensalism- When 1 organism benefits and the other one in not harmed .
- Parasitism - One benefits and the other is harmed .
- Competition - 2 organisms compete with each-other.
- Predation - The preying of 1 animlal on another .
- An example of mutalism is fungus and green alga .
- Commenalism example : whale and barnacles
- An example of parasitism is a liver tapeworm cysts and moose.
- Example of competention : musk ox and a caribou .
- An example of preditation would be : Rabbits eat the grass and a hawk eats the rabbit .
- Tundra come from the word tunturia which means treeless land.