Sonoran Desert - Physical and human Disturbances

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  • Sonoran Desert - Physical and human disturbances
    • Taking water from rivers
      • to supply a growing population - adversely affected mesquite bushes and cottonwood trees which grow along stream banks
    • Construction
      • Roads, gas and water have displaced natural habitats
      • Fenced highways restrict movement of animal
      • Drought in 2001-2002 was made worse because fences prevented the pronghorn reaching water supplies
    • Off road vehicles
      • Growing popularity of using these vehicles has caused damaged soils and vegetation
      • Car tyres crush stems, leaves, and seeds and compact the soil reducing soils ability to hold water
    • Donkey has escaped into the wild
      • Multiplied
      • Decline in native desert bighorn sheep population
        • Multiplied


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