Tuesday, April 27, 2010

Tundra


We will start off by educating you, the readers, about the tundra. Did you know that the Artic Tundra is the world's youngest biome? Originally, tundra comes from the Finnish word "tunturia", which means barren land. The tundra was formed 10,000 years ago, around the north and south pole. The Arctic Tundra makes up 20% of the Earth's surface, having usually cold weather and starky land. The ground in an area of tundra is frozen permanently, hence vegetation is scarce in an area near tundra. The only vegetation that are low lying enough to survive are plants like mosses, heaths, and lichen. Having cold and dark winters and melted snow and permafrost in the summer, the tundra springs with wildlife during the summer, being covered with marshes, lakes, bogs, and streams that breed thousands fo insects and migrating birds. The tundra is also home to animals d
uring the winter, though not as much. One example would be the arctic fox. Located at the northern american tundra. Arctic foxes usually make homes by burrowing in frost-free ground. Arctic foxes are scavenger. Sometimes, they follow polar bears or other predators and eat the remains of its meal. These house cat-size animals vary from about twelve to sixteen inches long and weight from six to twelve pounds. They have short, stubby legs and a bushy tail to wrap around itself for warmth. Arctic foxes have white hair in the winter and grey hair in the summer. These animals have also adapted stealthy movements from its nature. The food chain of the Tundra goes something like this. Produces such as livernorts, grasses, caribou moss, and lichens are eaten by primary consumers like pikas, musk ox, caribou, lemmings, and arctic hares. Then, these animals are eaten by secondary consumers such as arctic foxes, brown bears, arctic wolves, polar bears, kittiwakes, and snowy owls. Scavengers include the arctic foxes. Decomposers include mosses, lichen, and fungi.


5 comments: