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Published byLauren Floyd
Modified about 1 year ago
Tundra Alison Emmons
Defining Characteristics Cold, windy, and little precipitation Long winters, short summers Low biotic diversity Permafrost
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
Vegetation Moss, lichens, low shrubs 400 wildflowers Adaptations – Shallow root systems – Grow short and group together – Short growing season – Small leaves – Fuzzy hairs
Animal Life Arctic fox, polar bear, caribou, gray wolf, arctic hares, ground squirrels Migratory birds—snow geese, falcons, loons Insects—mosquitoes, arctic bumble bees
Animal Life Adaptations – Fat insulation and thick fur coats – Migration – Hibernation – Breed and raise young quickly
Threats—Global Warming Permafrost melting – Changing of habitat – Invasive species – New carbon contributor – Rising sea levels
Threats—Human Disturbance Air pollutants—DDT and PCB Oil and gas development – Roads create heat – Tire tracks
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