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Tundra Alison Emmons. Defining Characteristics Cold, windy, and little precipitation Long winters, short summers Low biotic diversity Permafrost.

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Presentation on theme: "Tundra Alison Emmons. Defining Characteristics Cold, windy, and little precipitation Long winters, short summers Low biotic diversity Permafrost."— Presentation transcript:

1 Tundra Alison Emmons

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3 Defining Characteristics Cold, windy, and little precipitation Long winters, short summers Low biotic diversity Permafrost

4 Permanently frozen rock or soil – Remains frozen for at least two years Close to melting point Surface layer melts during the summer – Bogs and shallow lakes About 450 meters

5 Vegetation Moss, lichens, low shrubs 400 wildflowers Adaptations – Shallow root systems – Grow short and group together – Short growing season – Small leaves – Fuzzy hairs

6 Animal Life Arctic fox, polar bear, caribou, gray wolf, arctic hares, ground squirrels Migratory birds—snow geese, falcons, loons Insects—mosquitoes, arctic bumble bees

7 Animal Life Adaptations – Fat insulation and thick fur coats – Migration – Hibernation – Breed and raise young quickly

8 Threats—Global Warming Permafrost melting – Changing of habitat – Invasive species – New carbon contributor – Rising sea levels

9 Threats—Human Disturbance Air pollutants—DDT and PCB Oil and gas development – Roads create heat – Tire tracks


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