Biome Research Project


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Biome Research Project

  1. 1. Deserts Deserts By: Luis, Chris, Danielle, and Gianna Period:3 By: Luis Ramirez
  2. 2. What is a Desert? • A region that is dry, lacks precipitation and has little or no plants or animals. • Deserts cover about 1/5 of the Earth’s surface. • Most deserts have specific types of plants and animals that have adapted to the environment. • The soils in deserts have a lot of nutrients because they only need water. • There are few large mammals in deserts because most are not able to live in those conditions.
  3. 3. Types of Deserts There are: • Hot Deserts • Cold Deserts • Coastal Deserts • Semiarid Deserts
  4. 4. Hot Deserts • Seasons are warm throughout year and get very hot during the summer. • Average temps. Range from 20-25 C • When it gets really hot it ranges from about 43-49 C • Minimum temps. can drop as low as -18C • Sometimes rain evaporates before touching the ground. • Average precip. per year is about 1.5 cm. • The soil is shallow, rocky and has good drainage.
  5. 5. Cold Deserts • Have long cold winters with snow and some rain and sometimes in the summer. • Average temperatures are from -2-4 C in the winter • Average temperatures are from 21-26 C in the summer • The soil is heavy, salty and has good drainage so that most of the salt is leached out. • Average precipitation is about 15-26 cm. per year
  6. 6. Coastal Deserts • Have cool winters and long warm summers. • Temperatures range from 13-24 C in the summer • Temperatures drop as low as -5 C in the winter • The soil is some what salty and has good drainage. • Precipitation is about 8-13 cm. per year
  7. 7. Semiarid Desert • The winters are cool and the summers are long and dry. • Average temperatures range from 21-27 C • Evening temperatures are around 10 C • Cool nights help the plants and animal by lowering moisture that is lost by sweating and breathing during the day. • Average precipitation is about 2-4 cm. per year • The soil is sandy, has pebbles, gravel is low in salt and has good drainage.
  8. 8. Global Locations Map Places with deserts:  North America  South America  Africa  Asia  Australia Key: Places with yellow are desert areas.
  9. 9. Climatograph
  10. 10. Plants & Animals of Hot Deserts • Most plants only make gas exchanges at night when less evaporation occurs. • There are cacti, yuccas, ocotillo and others. • Animals stay protected and hidden during the day when it’s hot and come out at night to hunt when it’s much more cooler. • There are insects, spiders, reptiles and birds.
  11. 11. Plants & Animals of Cold Deserts • Plants are mostly deciduous and have spiny leaves. • There are sagebrushes, shrubs and aloe. • Animals stay protected in underground tunnels to keep in the warmth. • There are rabbits, kangaroo mice, antelopes, squirrels, deer, foxes and coyotes.
  12. 12. Plants & Animals of Coastal Deserts • The plants have long roots that are close to the surface where they can take advantage of the rainfall. • All plants that have thick stems can take in a lot of water when it is there so that they can store it for future use. • There are salt bushes, black bushes, buck wheat bushes and little leaf horse brush. • Some animals have adapted to the conditions to deal with the desert heat and lack of water. • There are coyotes, toads, owls, eagles, lizards and snakes.
  13. 13. Plants & Animals of Semiarid Deserts • The plants are spiny and have shiny or slippery leaves so that they can reflect radiant energy. • There are white thorns, brittle bushes, creosote bush and bur sags. • The animals protection in underground tunnels where they are protected from heat. • There are rabbits, skunks, lizards, snakes and owls.
  14. 14. Hot Desert Pictures
  15. 15. Cold Desert Pictures
  16. 16. Coastal Desert Pictures
  17. 17. Semiarid Desert Pictures
  18. 18.  “Deserts”. Deserted Land. O’Hanlon, Larry. Sep. 10, 2008. Discovery Channel. Nov. 6, 2009.  “Deserts”. The World’s Biomes. UCMP Community. Sep. 4, 2008. University of California Museum of Paleontology. Nov. 6, 2009.  “Deserts”. Earth Floor. ETE team. April 28, 2005. Classroom of the Future. Nov. 6, 2009.  “Deserts”. The World’s Biomes. Schaffner, B. and Robinson, K. Nov. 7, 2006. Blue Planet Biomes. Nov. 6, 2009.