The Desert

Desert_map.gif
A map of the desert biome and the human impact on it



Cool Facts:


· Deserts cover about one fifth of the earth's land area, which is 20%.
  • Less than ten inches of precipitation a year
  • Because of this precipitation there are limited plant and animal species
  • Dessert plants such as cacti are not abundant neither is animal life
  • Some deserts get both very hot during the day time but very cold (during the night, temperatures can drop well below freezing).
  • Some deserts, are always cold such as, the Gobi Desert in Asia, and the desert on the continent of Antarctica.
  • Different kinds of animals live in different types of desserts.
  • Some fish even live in the desert.

Land Features

In deserts sand covers 205 of the world’s deserts, most sheets of sand is in sand sheets or sand seas. Underground channels carry water from nearby mountains. If desert channels weren’t covered they would dry up quickly form the hot temperatures. About one third of earth’s landmass is desert or semi desert. These features have certain features that aren’t found in more humid environments. These features are created by wind and water erosion. Desert areas like this, usually have internal drainage.



Names:
Malissa Green Class
Jacob Orange Class
Keleigh Yellow Class
Gabriel Blue Class

Food_Web.jpg
Food web of the desert biome

Threats or Issue



Scarcity of water a desert plants grow very slowly
The temperature and how hot it is
The saguaro cactuses ate getting cut down
There is no shade
Other animals get there first to eat so the other animals don’t survive

Development
Water and streams diverted
Wild life moving towards cities
People are building on desert land
Allergies to airborne pollens
Water supplies came in for irrigation projects
Mining
Irrigation
Salinization
Grazing
Invasive
Weeds
Tumbleweeds
Off-road vehicle use
Global warming
Firewood gathering
Desertification



Who’s doing what;
Locations
Climate
Animal
map picture
credits
food web


Pictures
Plants
Food Web
Decomposers
Plants

Land Features
Other Facts
making paragraphs


Food Web
Decomposers
Credits
Threats or Issue



Decomposers
Cactuses
Gila monsters

And many other desert animals that are most active at night










Locations
Desert can be found all over the world. They have many different climates depending on where they are. Deserts are normally in places in North America, South America, Australia Asia, and Africa



Climate
There are so many different climates in deserts. There is less than 25 cm of rain each year; some deserts have no rain for years. In deserts it is too hot to walk mid day. Temperatures shift throughout the day. Evaporation is more than precipitation. In the nigh time the temperature cools rapidly. The temprature can raise up to 100 degrees farenheit, in summer afternoons but, dip to 20-30 degrees or more at night.

Animals
There are so many species of animals, plants and other things in the desert. Mostly All desert animals are partly nocturnal. During the day time small animals will burry themselves in the sand. Larger animals will find shade to stay in because of the heat. Some of the desert animals are the Arabian camel, The Arabian horse, the armadillo, The Bactrian camel, The Bandicoot, The Bat and bighorn Sheep. Animals are active at night, late afternoon, and early morning because there is less heat. There are normally small animals. These animals have to be adapted to lack of rain.
Plants
nevada_desert.jpg
Warm Springs Area, Nevada is a natural oasis about 50 miles northeast of Las Vegas.


Barrel Cactus
Desert Fan Palm
Beavertail Cactus
Mojave sunup
Cooper dyssodia
Death Valley monkey flower
Desert candle
Desert five-spot
Desert larkspur
desert lily
Desert rock pea
Desert star
Tidy Fleabane
Arizona firecracker
Joshua Tree
jumping cholla
creosote bush
Humble Gilia
Arizona lupine
Mojave prickly poppy
Mojave sage
Mojave yucca
Caltha-leaved Phacelia
Single-leaf Pinyon
Desert Senna




Works Cited
"Desert Biomes." Blue Planet Biomes. Web. 19 Feb. 2010. <http://www.blueplanetbiomes.org/desert.htm>.
"Deserts." Marietta College. Web. 19 Feb. 2010. <http://www.marietta.edu/~biol/biomes/desert.htm>.

FlickrCC. Web. 19 Feb. 2010. <http://www.flickrcc.bluemountains.net/>.
"Mojave Desert -." Wikipedia, the free encyclopedia. Web. 19 Feb. 2010. <http://en.wikipedia.org/wiki/Mojave_Desert#Animals>.
Biggs, Alton, et al. Life Science . New Tour, ny; McGrawHill Glencoe, 2008. Print.
Lisowski, Marylin, and Linda C. Jones. Science Explorer: Enviromental Science. Needham, MA: Pearson, Prentice Hall, 2005. Print.
"Desert Bighorn Sheep -." Wikipedia, the free encyclopedia. Web. 26 Feb. 2010. <http://en.wikipedia.org/wiki/Desert_Bighorn_Sheep>.

Http:www.stoller-eser.com/trial/colorbook/Food-Web.gif//. Photograph.