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05/11/2013 Desert Biome Geography and Soil Deserts are formed in high pressure zones which warms descending air currents but the moisture evaporates before becoming rain, resulting in dry air absorbed by the soil Soils rich in minerals but low in organic materials By: Shelby Bissett, Carmen Sebastian and Hailey LaBarshBurkart Biotic Factors Biotic Factors Relationship between Organisms Abiotic Factors: Human Impact In the hot and dry climate, the plants are mainly shrubs and cactuses The most common animals are foxes, coyotes, scorpions, snakes, and small insects. Four different types of desert Biomes Costal desert average: 13-24˚c Cold desert average: 21-26˚c Hot and dry average: 20-25˚c Semiarid desert: 21-27˚c Potassium cyanide which is used in gold mines may poison the wild life Off road vehicles used irresponsibly can cause irreparable damage to desert habitats 1 05/11/2013 Solutions Use off road vehicles only on designated trails and roadways. Dig artificial grooves in the ground to retain rain fall and trap wind blown seeds Plant sad fixing bushes and shrubs Unique Attributes The average desert only rains about 25cm a year Many desert plants have silvery or glossy leaves allowing them to reflect more radiant energy Around one third of the earth’s surface is covered in deserts. Bibliography Biology textbook page 101 http://cejkdesertbiome.w eebly.com/bioticfactor.html http://apesdesertbiomes. weebly.com/bioticfactors.html 2
