deserttttttttt
TRANSCRIPT
![Page 1: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/1.jpg)
DESERTS• Region of land that is very dry because of low rainfall amounts.
• Often has little coverage by plants
• Generally receive less than 250 millimetres (10 in) of rain each year.
![Page 2: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/2.jpg)
DESERT VEGETATION
![Page 3: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/3.jpg)
XEROPHYTES
• Usually have special ways of storing and conserving water.
• They often have few or no leaves, which reduces water loss
![Page 4: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/4.jpg)
PHREATOPHYTES
• Are plants that have adapted to living in the desert by growing very long roots.
![Page 5: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/5.jpg)
PERENNIALS
• Survive by remaining dormant during the dry periods and come to life when water is available
![Page 6: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/6.jpg)
ANNUAL
• Germinate after heavy rain and complete their reproductive cycle quickly.
•They bloom for a few weeks in spring.
•Their seeds remain dormant in the soil until the next year’s rain
![Page 7: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/7.jpg)
DESERT ANIMALS
![Page 8: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/8.jpg)
• In times of drought, many desert animals remain inactive for long period
• More than half of desert animals live at least part of the time in underground.
• The camel is the most useful domestic desert animal
![Page 9: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/9.jpg)
CHARACTERISTICS
![Page 10: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/10.jpg)
HOT AND DRY DESERT
• The seasons are generally warm throughout the year and very hot in the summer.
• The winters usually bring little rainfall.
![Page 11: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/11.jpg)
SEMIARID DESERT
• Summer temperatures usually average between 21-27° C.
• Evening temperatures are cool, at around 10° C.
•The average rainfall ranges from 2-4 cm annually.
![Page 12: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/12.jpg)
COASTAL DESERT
• The average summer temperature ranges from 13-24° C; winter temperatures are 5° C or below
•The average rainfall measures 8-13 cm in many areas.
![Page 13: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/13.jpg)
COLD DESERT
• They have short, moist, and moderately warm summers with fairly long, cold winters.
• The mean winter temperature is between -2 to 4° C
• The mean summer temperature is between 21-26° C.
![Page 14: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/14.jpg)
IMPORTANCE
![Page 15: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/15.jpg)
• Most desert have a considerable amount of specialized vegetation, as well as specialized vertebrate and invertebrate animals
• Two- thirds of the world’s crude oil is found by drilling in desert
• Deserts are increasingly seen as sources for solar energy, partly due to lower cloud cover
![Page 16: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/16.jpg)
SOLUTIONS TO PROTECT THE DESERT
![Page 17: Deserttttttttt](https://reader037.vdocuments.us/reader037/viewer/2022110306/554e9adab4c90573338b5392/html5/thumbnails/17.jpg)
• Support the environment and the wildlife !
• Study wildlife and educate others
• Be aware of changes in the community that could damage desert habitat and animals