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Temperate Desert

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on 19 November 2013

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Transcript of Temperate Desert

A temperate desert is a barren area of land where little precipitation occurs (less than 10%) and living conditions are hostile for plant and animal life. Temperate desert temperatures are high in the summer and low in the winter. They are found at higher longitudes.
photo credit Nasa / Goddard Space Flight Center / Reto Stöckli
Temperate Desert
Temperate Desert Map
Invasive Species
Soil Type
Poorly drained areas develop saline soils, and dry lake beds are covered with salt deposits. Soils of the temperate desert are low in humus and high in calcium carbonate.Dry soils are low in organic matter because there is so little vegetation. Most desert soils are made up of tiny particles of quartz. Some soils that have little soil, exposing a wide polished, pebbly rock called "desert pavement".
Food Web
The desert's climate is very hot and also very dry. But most coastal deserts are in moderately cool to warm areas. They usually have very cool winters followed by a long, and warm summers. In the summer, the weather heats up to between 12 and 24 degrees Celsius. The temperature in the winters is generally 5 degrees Celsius. Most deserts are usually located in areas near the equator. The weather is not always the same in all deserts.
There is a also a very ow amount of precipitation in the desert. Most deserts receive less than 25 centimeters a year, receiving the least rain in the spring and summer.
Ryan Taphouse, Erica Flores, Aaliyah Smith
What is a temperate Desert?
Photographs of Temperate Deserts
Animal Adaption
Animals, just like plants, have to cope with the lack of water and excessive heat if they are to live in the desert. Most adaptions in animals involve behavioral responses, morphological and physiological adaptions.
common behavior adaptions include being nocturnal, or crepuscular (only being active near dawn or dusk) and burrowing below ground for shelter and nesting. Other adaptions include plants growing spines, of hairs that protect them from the sun and being eaten by animals, some organisms not having sweat glands, and in a few the ability to concentrate their urine.
Natural Resources
How Can This Be Avoided?
Temperate deserts provide many natural resources such as: Copper, Granite mica, and various types of clay. Desert plants that are used to make syrups and medicine, Agave nectar, Quartz, Jade and Gold. Water resources in the desert include underground reserves and surface water.
Limiting Factors
Little precipitation
Soil is usually too course for plants to grow.
Annual Precipitation

People in the desert often dig wells in aquifers and underground water to irrigate crops, and give water their animals . The water sources shrink and cannot be replaced fast enough
The marks that are left in the soil after Off - Roading kill off vegetation. Animals that rely on the sandy desert floor are greatly harmed by this.
Military exercises is cause extensive damage to plants and soils.
Impact Of Human Activities
Many of the minerals found in the desert are used to make Jewelry ( copper, jade, quartz, and gold)
Phosphates are used to make Fertilizers
Limiting Factors
In the Mojave desert, the desert tortoise are endangered. Due to Poaching and driving off-highway vehicles within tortoise habitats,and this continues to threaten tortoise populations.
Prevention methods for the extinction of the organisms in the Mojave desert Includes things such as, ending poaching, and putting an end to off-highway driving near habitats.

An invasive species in the Mojave Desert is the Red Brome.
It is an invasive weed that has been spreading across the Southwest ever since they were brought over as feed for animals by Spanish colonists hundreds of years ago. They are very flammable and can create fire breaks.
Water Issues
Impact of ENSO
The weather cycle for the earth, which includes the El Nino` and La Nina, controls the variation in desert rainfall. La Nina brings the Mojave deserts dry winters while El Nino brings wet winters.
Biodiversity in Mojave

Secondary consumers include:
the coyote,the bobcat and the mountain lion.

Plants in the desert:
include the Blackbrush, The Prickly Pear Cactus,
The Joshua Tree and the Mojave Yucca (aka the spanish dagger)

Primary consumers include:
the jack Rabbit, the rock- tailed squirrel, and the
western- harvest mouse

Decomposers include:
the earth worm and the dung beatle
Degradation is found where oases (water) is present. Here, habitats are heavily altered by human activities. Previously existing tree cover has often been removed for fuel and quick resources by nomadic pastoralists and traders.
Desertification is causing an increase in the amount of desert land.
Animals are becoming endangered do to the amount of poaching and hunting that they had to endure.
Water is over used by humans
Laws and Acts
The endangered species Act-
makes it illegal to hunt
endangered species

National Wildlife Refuge System
Administration Act-
provides guidelines to
protection systems including wildlife refuges,
and areas made for the protection and conservation
wildlife that are threatened with extinction.

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