<ul><li>How do animals and plants survive in the Sonoran Desert, Arizona , USA ? </li></ul><ul><li>A presentation supplied...
<ul><li>Does a barrel cactus contain water ? </li></ul><ul><li>Yes, the Barrel Cactus does store water, but it is not free...
<ul><li>Some people have been known to survive by eating this moist pulp. However, certain species of cactus can contain t...
<ul><li>The white-winged dove has a plump body which gives it  a high mass-to-surface area ratio, which minimises moisture...
<ul><li>The white-winged dove eats dry seeds, and the fruit provided by cacti.  </li></ul><ul><li>They can go without wate...
<ul><li>The white-winged dove survive even if their body weight is reduced by 20% by dehydration, and they are able to dri...
<ul><li>Rodents can sometimes kill a Saguaro cactus , by chewing at its moist pulp.   </li></ul><ul><li>The Red-Tailed Haw...
<ul><li>During the summer, temperatures can reach over 110   o F. </li></ul><ul><li>The jackrabbit is able to release heat...
<ul><li>Following rain showers  the Ocotillo plant grows leaves along its thorny stems.  </li></ul><ul><li>During a shorta...
<ul><li>The green bark of the Ocotillo take over the functions of the leaves during heavy periods of drought.  </li></ul><...
<ul><li>The Saguaro provides home and protection for  birds and other small animals. </li></ul><ul><li>It provides food fo...
<ul><li>The Desert Mariposa unfolds its orange coloured blossoms only in the Spring.  </li></ul><ul><li>During the rest of...
<ul><li>The diet of the Peccary consists of shrubs, grass, mesquite beans , cacti and various roots and tubers.  </li></ul...
<ul><li>The Peccary chooses its location carefully, for shelter.  </li></ul><ul><li>They use twisting courses of desert wa...
<ul><li>The signature plant of the Sonoron Desert : it does not exist anywhere else in the world  </li></ul><ul><li>Tall c...
<ul><li>The pleats in its trunk allow for expansion, so that it can hold tons of water , to last through the periods of lo...
<ul><li>Cavities in the stems are made by woodpeckers, and they use them as nests.  </li></ul><ul><li>Once the woodpeckers...
<ul><li>Seeds swallowed by animals and birds pass through their digestive system unharmed. When deposited under trees and ...
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Survivaldesert2

  1. 1. <ul><li>How do animals and plants survive in the Sonoran Desert, Arizona , USA ? </li></ul><ul><li>A presentation supplied by North Chadderton School, Oldham, Lancashire, England </li></ul>Desert Survival
  2. 2. <ul><li>Does a barrel cactus contain water ? </li></ul><ul><li>Yes, the Barrel Cactus does store water, but it is not free flowing. The water is stored in special tissue. </li></ul><ul><li>Jackrabbits and other animals can survive in very hot conditions by eating this moist pulp. </li></ul>Desert Survival
  3. 3. <ul><li>Some people have been known to survive by eating this moist pulp. However, certain species of cactus can contain toxins harmful to humans. </li></ul><ul><li>In addition, Arizona Native Plant Law prohibits damaging and destroying barrel cacti and other native plants </li></ul>Desert Survival
  4. 4. <ul><li>The white-winged dove has a plump body which gives it a high mass-to-surface area ratio, which minimises moisture loss . </li></ul><ul><li>The plump body also insulates them from extremes of temperature. . </li></ul>Desert Survival
  5. 5. <ul><li>The white-winged dove eats dry seeds, and the fruit provided by cacti. </li></ul><ul><li>They can go without water for four or five days, and fly up to 10 miles to find water. </li></ul>Desert Survival
  6. 6. <ul><li>The white-winged dove survive even if their body weight is reduced by 20% by dehydration, and they are able to drink salt water. </li></ul><ul><li>They are able to rehydrate quickly, and suck up water like a mammal, unlike most birds. </li></ul>Desert Survival
  7. 7. <ul><li>Rodents can sometimes kill a Saguaro cactus , by chewing at its moist pulp. </li></ul><ul><li>The Red-Tailed Hawk helps to reduce the rodent population around the cactus, by killing the rodents for food . </li></ul>Desert Survival
  8. 8. <ul><li>During the summer, temperatures can reach over 110 o F. </li></ul><ul><li>The jackrabbit is able to release heat through its long ears and legs. </li></ul>
  9. 9. <ul><li>Following rain showers the Ocotillo plant grows leaves along its thorny stems. </li></ul><ul><li>During a shortage of rain the leaves turn brown and fall. This conserves water, by reducing evaporation. </li></ul>Desert Survival
  10. 10. <ul><li>The green bark of the Ocotillo take over the functions of the leaves during heavy periods of drought. </li></ul><ul><li>The process of photosynthesis is able to continue. </li></ul>Desert Survival
  11. 11. <ul><li>The Saguaro provides home and protection for birds and other small animals. </li></ul><ul><li>It provides food for its neighbours. </li></ul><ul><li>It can store large amounts of water in its fleshy tissue </li></ul>Desert Survival
  12. 12. <ul><li>The Desert Mariposa unfolds its orange coloured blossoms only in the Spring. </li></ul><ul><li>During the rest of the year the foliage is dead. </li></ul><ul><li>It EVADES the action of the desert heat. </li></ul>Desert Survival
  13. 13. <ul><li>The diet of the Peccary consists of shrubs, grass, mesquite beans , cacti and various roots and tubers. </li></ul><ul><li>They are able to eat cactus, with the prickly spines ! They also eat nuts and berries. </li></ul><ul><li>They are able to extract sufficient moisture from this diet for several days at a time. </li></ul>Desert Survival
  14. 14. <ul><li>The Peccary chooses its location carefully, for shelter. </li></ul><ul><li>They use twisting courses of desert washes with the shade provided by the trees. </li></ul><ul><li>Living in large cavities provided by erosion of the banks, also offers suitable hiding places. </li></ul>Desert Survival
  15. 15. <ul><li>The signature plant of the Sonoron Desert : it does not exist anywhere else in the world </li></ul><ul><li>Tall column-shaped cactus with pleated stems. Can grow to 40' (12m) . </li></ul><ul><li>Produces white flowers in Spring. </li></ul><ul><li>Has a shallow root system, and can absorb gallons of water during a single rainfall. </li></ul>Desert Survival
  16. 16. <ul><li>The pleats in its trunk allow for expansion, so that it can hold tons of water , to last through the periods of low rainfall . </li></ul><ul><li>The waxy, tough coat minimises loss of water by evaporation. </li></ul><ul><li>Can live up to 200 years. </li></ul><ul><li>Smaller saguaros live under 'nurse' plants, which provide shelter during the early years. </li></ul>Desert Survival
  17. 17. <ul><li>Cavities in the stems are made by woodpeckers, and they use them as nests. </li></ul><ul><li>Once the woodpeckers move out these homes are soon adopted by other visitors, such as elf owls, flycatchers, purple martins, and brown bats. </li></ul><ul><li>Damage can occur sometimes by sudden frosts, lightning, high winds. </li></ul>Desert Survival
  18. 18. <ul><li>Seeds swallowed by animals and birds pass through their digestive system unharmed. When deposited under trees and shrubs they are given a chance to germinate. </li></ul><ul><li>Harvester ants gather seeds by the million, and store them in an underground food reservoir, too deep for the seeds to sprout. </li></ul><ul><li>Fortunately, the Saguaro produces enough seeds to more than compensate for this loss ! </li></ul>Desert Survival
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