bio jayo desert project.ppt - BioJayo by ewghwehws

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									      Desert



Steph Nolan & Brynn Peak
Desert Map of the World
  Temperature& Precipitation

• The deserts of the world get less than 15-

 16 cm of rain a year.

• Climate temperatures are from 20-25

 degrees Celsius.
Geologic Features of the Desert
Main Geologic features of the desert is:

•   Arroyo-desert gully.

•   Dunes-loose sound grains that are shaped by the wind.

•   Flash Floods-local flood.

•   Hoodoo-bizarre column caused by an erosion.

•   Mesa-a large cliff that has rock layers.
                   Plants in the desert


                         Barrel Cactus-
                         usually found in
                         the American
                         Desert.




Desert Ironwood-
usually found in
Sonoran Desert.

                                            ChainFruit Cholla-
                                            usually found in the
                                            Arizona Desert.
                  Desert Animals
• Dingo- The dingo is a mammal      • Fat Sand Rat- The sand rat is
  and a carnivore. Dingo’s            also a mammal, and is a
  belong to the dog and fox           rodent. It eats seeds, and
  family, and is seen most            belongs to the Gerbil family.
  commonly in Australia.              Sand Rats are usually found in
                                      Algeria.
• Thorny Devil- This reptile eats
  ants, and belongs to the          • Sidewinder- The sidewinder is
  lizard/snake family. Most           a reptile, and part of the pit
  Thorny Devils are found in          vipers family. The sidewinder
  Australia.                          eats small mammals and is
                                      found in the southwestern
                                      region of the United States.
            Animal Adaptations
• Animals need to be able       • Its hot during the day, so
  to not drink for a long         most animals might come
  time, so they eat seeds         out at night when its cooler
  with water in them. When        (this is called being
  an animal lives in a            “nocturnal”).
  desert it’s helpful to eat    • Coming out at night or
  seeds because the desert        staying underground helps
  is dry and its hard to find     animals because they may
  water, so they drink the        not be able to take the
  water from the seeds they       heat, so this keeps them
  eat, and can still survive.     cool at night when they are
                                  hunting, or resting.
               What we do to the Deserts
•   Humans live in some deserts, and they need as much nutrients as everyone
    else, but it’s a bit harder to find.

•   In the Thar desert, studies have shown that animal/human population is up,
    but vegetation is down. Uncontrolled grazing and large population is making
    the soil infertile, and destroying the ecosystem.

•   As humans we hurt the desert by over-using water. If we used less water,
    then there would be more to populate the desert.

•   Also, humans drive through the desert and build roads over its natural
    environment. If we volunteered to clean the deserts, and protect the natural
    resources we can still enjoy its natural beauty.
           Commercial Value
• There can be many things found useful in a
  desert. For instance in Utah, some materials
  have help make jet fuel. Also in the Arabian
  desert; oil, natural gas, phosphates, and sulfur
  can be found. Beans and seeds are full of more
  protein than regular beans that are usually
  bought by the can. Also gum Arabic is used to
  get gum from trees in Africa, making it useful for
  gum makers. Simmondsia chinensis grows in
  deserts and helps to produce essential oil.
                 Questions
1.   Where can deserts be found?
2.   Do people live in deserts?
3.   Why is oil found in deserts?
4.   What kinds of deserts are there?
5.   What are deserts like?
6.   How do plants survive?
                           Answers
1.   Usually between 30 degrees latitude N, and 30 degrees lat. S.
2.   Yes, people do live in deserts, but many don’t because of harsh
     conditions.
3.   Plate tectonics are ser up in a way that oil is mostly in those areas. Also,
     the air isn't very easy to live in. So a lot of microorganisms don’t
     decompose and help with producing oil.
4.   Hot:
•     Arabian-Arabian Peninsula
•    Australian-Australia
•    Mohare-SW United States
•    Monte- Argentina
     Cold:
•    Gobi-North China
•    Iranian-Iran
•    Namib-SW Africa
•    Turkestan-SW Russia
             Answers cont.
5. Usually hot during the day, cold at night,
  very dry, little vegetation, long dry spells,
  little rain, sudden flash-floods.
6. They have adaptations that let them store
  water & hold it for long periods of time.
        Books & websites used
•   http://mbgnet.mobot.org/
•   http://www.blueplanetbiomes.org/worldbiomes.htm
•   http://ucmp.berkeley.edu/exhibits/biomes/index.php
•   http://desertusa.com/mag99/sep/papr/desfeatures.html
•   http://en.wikipedia.org/wiki/Thar_Desert#people
•   http://en.wikipedia.org/wiki/Arabian_Desert#ecology_and_natural_resources
•   http://www.books.google.com
•   http://scientificamerica.com/articlam.cfm
•   Blue Biology book
•   Green Biology book
•   http://wiki.answers.com/Q/How_do_people_affect_the_desert

								
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