Tundra JON MAYES. What Is The Tundra? Northern Biome Dominated by: Mosses Lichens Dwarf Willows...
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Transcript of Tundra JON MAYES. What Is The Tundra? Northern Biome Dominated by: Mosses Lichens Dwarf Willows...
![Page 1: Tundra JON MAYES. What Is The Tundra? Northern Biome Dominated by: Mosses Lichens Dwarf Willows Low-Moderate Precipitation Very Short Growing.](https://reader035.fdocuments.in/reader035/viewer/2022062408/56649f1d5503460f94c33b76/html5/thumbnails/1.jpg)
TundraJON MAYES
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What Is The Tundra?
Northern Biome
Dominated by:
Mosses
Lichens
Dwarf Willows
Low-Moderate Precipitation
Very Short Growing Season
Covers approximately 1/5 of land
“Treeless”
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Climate
Cold Average Temperature: less than 5 degree Celsius
Precipitation exceeds evaporation
Precipitation 15-25 cm per year
Normally snow
Summer – Brief 3-12 degrees Celsius on average
Periods of almost 24 hour daylight
Soggy
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World Distribution Map
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Permafrost
Unique soil structure
Layer of year-round frozen soil
Soil above may thaw in summer
Prevents deep burrowing
Prevents deep root systems
When water saturates upper surface: Bogs/ponds form
Consists mostly of gravel and finer materials
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Animals
Caribou/Reindeer
Considered indicator species
Lemming
Arctic Hare
Polar Bear
Arctic Fox
Snowy Owl
Musk Ox
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Animals
Musk OX Snowy Owl
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Animals
Arctic Fox Polar Bear
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Animal Adaptations
Breed and raise young in summer
Hibernate/sleep during worst part of winter
Many migratory species Others need to change what they eat depending on season
Additional insulation from fat
Thicker coats
Shorter/smaller to reduce surface area
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Plants
Lichens
Willows
Sedges
Grasses
Mosses
Fireweed
Variety of low-growing shrubs
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Plants
Polytrichum Moss Fireweed
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Plants
Growing season up to 60 days
Adapt to environment by: Grow shorter
Grouping together
Use minimal amount of energy
Photosynthesize at low temperature/light intensity
No deep root systems
Most plants reproduce by budding
Hairy stem
Darker pigments
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Threats to the Tundra
Global Warming Permafrost is filled with dead plant material
As it warms, carbon dioxide is released
Accelerates global warming
Gas/Oil Development Destroys the ecosystem
More people been moving to tundra New towns/roads
Interrupts many migration and feeding patterns
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Tundra