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The Sahara

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  1. The Sahara Dry Desert

  2. What is The Sahara • Hot Desert • ( less than 10 inches of rain, temp. range23 to 136 Degrees Fahrenheit with 86 average ) • Some area average less than one inch of rain per year.

  3. Size: Third largest desert and largest hot desert covering about 3,500,000 sq. miles • Borders 11 Countries

  4. Physical Features

  5. ERGS, Sand Seas with dunes up to a thousand feet high

  6. Regs: plains of sand and black, red or white gravel

  7. Hamadas: elevated plateaus of rock and stone up to 11,000 feet

  8. Wadis: temporary water sources fed by rainfall

  9. Oasis: At its hub is water, often in the form of natural springs, artesian wells or entire irrigation systems

  10. Saharan vegetation is generally sparse, with scattered concentrations of grasses, shrubs, and trees in the highlands, in oasis depressions, and along the wadis

  11. Plant Life Saharan vegetation is generally sparse, with scattered concentrations of grasses, shrubs, and trees in the highlands, in oasis depressions, and along the wadis

  12. The soils of the Sahara are low in organic matter. Soils in depressions are frequently saline. • rainfall happens very rarely, but when it does it is usually torrential when it occurs after long dry periods. • Wide temperature range. • 500 plant species compared to 40000 of Amazon

  13. Oleander: typically found around stream beds and oasis.may germinate within three days of adequate rainfall and sow their seeds within 10 or 15 days of germination.

  14. Date Palm tree: up 75 feet tall with roots 150 feet deep

  15. Grass:spreadover a large surface area and take in enough moisture to surviveBecause of the slim surface area of the leaves, the lack of moisture through evaporation is reduced

  16. Animal life The dry desert is filled with animal life contrary to what most may believe. The Sahara is filled with small creatures to large mammals. The Sahara is also home to 300 different species of migratory birds.

  17. Dung Beetle:A species of beetles that feeds entirely off animal waste, the dung beetle is an integral part of the Sahara

  18. Deathstalker Scorpion :nocturnal hunter, feed on small lizards and insects.

  19. Dromedary Camels: Stores fat in hump, can go without water for weeks

  20. Endangered and threatened animals

  21. Fennec Fox: nocturnal hunter with large ears that help dissipate heat. Endangered because of human over trapping

  22. The Addax Antelope: Endangered do to over hunting

  23. Valsgundimouse

  24. Threats to environment

  25. Human Development threat • Drought and Global warming

  26. Resources

  27. Underwater reserves • Oil • Iron ore • Coal and natural gas • Phosphates