Land of the tundra
The tundra is a very important biome. Below, there is information on the water resources and the soil types of the tundra. Make sure to also read the last section about how animals have adapted to the tundra climate and lack of resources, just like on Biology Page. Read ahead to complete your journey of learning.
Soil In the Tundra
- Permafrost makes up the soil.
- 3 layers.
- Active layer: seasonal growth occurs.
- Permafrost: Permanently frozen soil; no life is supported there.
- Talik: Active, dry soil layer under the permafrost and between the permafrost and the Active layer.
- Thawing and freezing of the active layer of the permafrost creates evaporation.
- Permafrost must be frozen for two or more years with no thawing to be considered permafrost.
- Permafrost occurs in the arctic circle and much of Canada and in places very far south, such as Antarctica.
- Summer is 6-10 weeks and the temperature never reaches above 50 degrees.
Water Resources
- Very little water exists in the tundra.
- Ice can not be used as easily as water.
- Average of less than 10 inches of precipitation per year.
- Precipitation is always snow, never rain.
- In the summer, the active layer of the permafrost thaws out and bogs and streams form due to the water made from the thawing of the active layer.
- Makes life harder for animals to survive.
Animals Adapting to resources
- Lack of water and extreme temperature makes it hard for animals to survive.
- Many animals still live there, but have learned to adapt to the harsh conditions.
- Like the hare in the image, many animals have grown thick fur to keep water in their body and to keep them warm.
- Also, sharp claws were created to make up for the lack of food in the tundra for primary consumers.