Tundra - PowerPoint PPT Presentation

Slide1 l.jpg
Download
1 / 11

  • 531 Views
  • Updated On :
  • Presentation posted in: Pets / Animals

Tundra. A. Schetinnikova. About the Tundra… . Temperature: Average Yearly Temperature:16 ° F Average Winter Temperature: -10° F Summer Temperatures: 35-55 ° F Precipitation: Annual precipitation, including melting snow, is 18 inches Solar Insolation:

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

Tundra

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Slide1 l.jpg

Tundra

A. Schetinnikova


About the tundra l.jpg

About the Tundra…

  • Temperature:

  • Average Yearly Temperature:16° F

    • Average Winter Temperature: -10° F

    • Summer Temperatures: 35-55 ° F

  • Precipitation:

  • Annual precipitation, including melting snow, is 18 inches

  • Solar Insolation:

  • Tundra does not have traditional seasons, only a lengthy winter and a brief mild season.

  • Limiting Factors:

  • Plant growth is hampered by the layer of permafrost, or permanently frozen subsoil.


Species diversity l.jpg

Species Diversity

  • About 1700 types of plants in the arctic tundra

  • Vegetation: Grasses, mosses, lichens, sedges, shrubs, trees include birches and willows

  • Mammals: Caribou, arctic foxes and hares, polar bears, lemmings, porcupines, mountain goats and elk in the alpine tundra

  • Birds: Snowy owls, falcons, snow geese, tundra swans, ptarmigans, ravens


Food chain of the tundra l.jpg

Food Chain of the Tundra:


Unique facts about the tundra l.jpg

Unique Facts about the Tundra:

  • There are two types of tundra: arctic tundra and alpine tundra

    • Arctic tundra is more common and is located from the north pole to the forests of the taiga

    • Alpine tundra is located in high elevations

    • Throughout the winter, the tundra gets only a few hours of sunlight. In the summer, the tundra can get up to an entire day of sun.


The tundra l.jpg

The Tundra

By T. Cohen


Tundra biome information l.jpg

Tundra Biome Information

  • Temperature : -40°C to 18°C

  • Precipitation:150 to 250 mm of rain per year

  • Solar Insulation

    • Winters – long, dark, and cold

      • Mean temperatures below 0°C for 6 to 10 months of the year

    • Summers – Short season, Long days

      • Top layer of soil thaws a few inches down

      • Provides a growing surface for the roots of vegetation

      • Rain and fog – water gathers in bogs and ponds

  • Limiting Factors: low temperatures, the little water is frozen, permafrost affects vegetation, animal enzymes cannot function in cold


Tundra species diversity l.jpg

Tundra Species Diversity

  • Vegetation

    • Permafrost prevents drainage of excess moisture

    • Growing season is short and can last up to 60 days

    • Low diversity – Few plants could survive extreme temperatures, lack of water, and low soil

    • lichens, mosses, sedges, perennial forbs, and dwarfed shrubs, heaths, birches and willows

    • Trees that do manage to grow stay close to the ground

      • Insulated by snow during the cold winters


Tundra species diversity9 l.jpg

Tundra Species Diversity

  • Animal Life – lower diversity due to extreme conditions

    • Result: Residents adapt to environment

  • Morphological adaptations

    • large, compact bodies

    • thick Insulating cover of feathers or fur

    • pelage and plumage that turns white in winter, brown in summer

  • Physiological adaptations

    • ability to accumulate thick deposits of fat during the short growing season

    • Fat acts as insulation; store of energy for use during the winter, when animal species remain active.

  • Population adaptations

    • cyclical fluctuations in population size

    • Predator populations and plant populations respond in kind to the peaks and crashes of the herbivore populations.


Food chain l.jpg

Food Chain

Polar Bear

Tundra food chains are short and highly susceptible to changes

Woodland Caribou

Reindeer Lichen


Interesting facts l.jpg

Interesting facts

  • Permafrost

    • temperatures are so cold that there is a layer of permanently frozen ground below the surface (6 in.)

  • The Precipitation levels - 150 to 250 mm of rain/yr

    • Includes melted snow

    • Less than most deserts

  • Still usually wet though: the low temperatures cause evaporation of water to be slow

  • Snowfall is actually advantageous to plant and animal life as it provides an insulating layer on the ground surface


  • Login