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The Desert

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The Desert

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  1. The Desert

  2. Abiotic Characteristics Abiotic factors in deserts can be sand, rocks, sunlight, temperature, and dirt. An average temperature in deserts is about 25°C. In some deserts like the Sahara desert in Northern Africa, temperature can rise to a high of 55°C. Theres very low amount of precipitation and not much rainfall all year. With some deserts being up north and some in the east, longitude and latitude depends on the location of the desert.

  3. Animals There are many different types of animals that live in the desert such as birds, mammals, and reptiles. You can find many camels in the desert alongside of scorpions, foxes, ostriches, various snakes, jerboas, and much more! In the Antarctic desert, you will find animals such as penguins, whales and more! Each animal has their own unique way of surviving either the freezing cold or the hot sun! The camel for example, has fur that helps them survive the harsh conditions of the desert. Camels also have soft feet that helps them maneuver easily through the sand. Camels have a physiological adaptation as well. They store fat and water in their hump(s) which can allow them to survive without food or water for two and a half weeks! In the Antarctic desert whales, seals, and other animals keep warm by the layer of fat they store!

  4. Plants There are not too many plants in the desert but there happens to be more than what people expect. The most common plant you will find in hot deserts are cactuses. There are many different types of cactuses but they have all grown to be able to withstand the conditions of the desert. Many plants, including the cactus have roots that extend up to 80 feet long which is very helpful when water can't be found easily. Cactuses also have a thick wax layer outside of it's stems and leaves, which preserves water for a long time. Many trees have also developed the capability of blossoming it's fruits as soon as the slightest bit of rain fall comes and then whither and die. In the Antarctic desert, lichens are one of the only plants that can live in the cold weather. They live close to the ground and close together which helps them survive the cold conditions. The biggest problems for plants in the Antarctic desert is the lack of water. Lichens are one of the only plants that have found and resolved this problem. They live in cracks between rocks so that they gather any little water they find.

  5. Climate The second climate graph, shows rainfall and temperature in cold deserts. It is obviously very cold all year long. Although rainfall in cold deserts are higher than in hot deserts, it is still not too much rainfall. June-August are the coldest months in the year. The first climate graph shows the average temperature and rainfall of hot deserts. As you can see it is very dry all year long and not much rainfall. Precipitation level and rainfall is a little bit higher in January and December than other months.

  6. Succession Climax Community: Abiotic & biotic are living in a stable biome. Catastrophic Event: For example a whirlwind comes and because of it the ground is no longer fertile. Pioneer Species: The most common pioneer species in the desert is the tamarisk tree. The tamarisk tree makes the ground fertile again. Return of Species: Because of the fertile ground, more species are returning to the ground. climax species continue to grow Climax Community Restored: The biotic and abiotic components are once again in a stable biome.

  7. World Distribution The yellow areas is where the major deserts are located in the world. Antarctica is also considered a desert. The biggest hot desert in the world is the Sahara desert which covers approximately 1/3 of Africa. Antarctica is the biggest cold desert and is also considered the biggest desert in the world.

  8. Invasive Species There really isn't much threat to the desert. Humans would probably be the only species that would be able to affectthe deserts ecosystem. The amount of garbage left on deserts has a huge impact on the animals that roam the biome. Not only does the garbage affect the species living there but the pollution from factories also has a huge impact on the species in the desert. So the only invasive specie that causes damage to the desert biome would be humans.

  9. Bioaccumulation The biggest danger for organisms in the desert is poisonous plants. There are many plants that can be poisonous and once one rodent or insect eats these plants, there are other animals that eat the rodents/insects and the poison just continues on. Many plants contain alkaloids which is a mixture of nitrogen and salt and that can be very harmful for animals. Organic acids are also common in plants. Animals can not digest organic acids and therefor become poisoned because of them. Other then plants, there is not much things that can harm organisms besides lack of water.

  10. At the top we have birds and other larger animals such as foxes. This group is called the tertiary consumers. Energy Flow: Food Chain Arachnids, and more reptiles consume on the primary consumers below. This group is the secondary consumers. Insects, reptiles, and rodents are primary consumers of the plants. The producers in the desert are the plants.

  11. Biotic Relationship Commensalism: The creosote bush and the holly shrub have a commensalism relationship in the desert. The creosote bush uses the holly shrub to protect itself from the sun and it uses the holly shrub as a shade. Mutualism: An example of mutualism is the cacti flower and a bee. The bee pollinates the cacti flower and in return, the cacti flower gives the bee nectar so it's can make honey. Parasitism: An example of parasitism in the desert would be the relationship of fleas and the animals in the desert. The fleas use the animals as a home while the animals suffer because of them.

  12. Predator-Prey There are many predator prey interactions in the desert. A few examples of predator preys are... 1) Fox(Predator)-Snake(Prey) 2) Hawk(Pedator)-Lizard(Prey) 3) Lizard(Predator)-Kangaroo Rat(Prey) 4) Scorpion(Predator)-Beetle(Prey) 5) Snake(Predator)-Kangaroo Rat(Prey) There are many more predator-prey interactions as well as these.

  13. Sources • http://1.bp.blogspot.com/_LiJCTiIqdb4/TA2easl_y-I/AAAAAAAAC0o/oDMi5SAu7H4/s1600/lonepalmsaharadesert.jpg • http://t.answers.com/answers/#!/entry/what-is-the-latitude-and-longitude-of-a-desert,504dea33444f678947554005/3 • http://www.hdwallpapers.in/walls/sahara_desert-wide.jpg • http://www.alltouristattractions.org/ala/2012/07/Gobi-Desert.jpg • http://www.whereisitlocated.net/wp-content/uploads/2011/08/Antarctica-Desert-located.jpg • http://onebigphoto.com/sahara-desert-fox/ • http://t.answers.com/answers/#!/entry/whats-the-latitude-and-longitude-of-the-sahara-desert,4fd9d63e4b672622b8386944/2 • http://www.livescience.com/23140-sahara-desert.html • http://www.desertanimals.net • http://www.kidcyber.com.au/topics/antarcanimals.html • http://www.ask.com/question/how-do-camels-survive-in-the-desert • http://static.environmentalgraffiti.com/sites/default/files/images/3_Sahara-Desert-Landscape.img_assist_custom-600x400.jpg • http://ths.sps.lane.edu/biomes/desert4/desert4.html • http://t.answers.com/answers/#!/entry/how-do-plants-survive-in-the-tundra,505a4654444f678947669a43/2 • http://images.nationalgeographic.com/wpf/media-live/photos/000/063/cache/map-world-desert_6364_600x450.jpg • http://www.pictures2.temehu.com/wldlf/albranbakh-flower-torha2.jpg • http://www.gardenguides.com/86902-dangerous-desert-plants.html • http://www.ask.com/question/examples-of-commensalism-in-the-sahara-desert • http://www.ask.com/question/examples-of-parasitism-in-the-desert • http://www.ask.com/question/an-example-of-mutualism-in-the-desert • http://images.nationalgeographic.com/wpf/media-live/photos/000/641/overrides/2013-year-of-the-snake-list_64139_600x450.jpg • http://t.answers.com/answers/#!/entry/what-is-an-example-of-a-predatorprey-relationship-in-the,505c8e12444f6789476d12df/2 • http://1.bp.blogspot.com/-Erk3T4h_6jI/UKp1RMyPpBI/AAAAAAAAAok/qNuYIBwWCj8/s1600/fire_glory_whirlwind_over_lyford3.jpg • http://prezi.com/bwojok-9ilcw/succession-in-the-desert/

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