Anna Stooksbury

Vitals of Deserts

Locations of Deserts

One fifth of Earth's surface is covered with deserts. Hot and Dry Deserts are found near the Tropic of Cancer or the Tropic of Capricorn. Near the Arctic part of the world is where you can find Cold Deserts.

Abiotic Factors of Deserts

Temperature: All months have an average of 18 degrees Celsius (64 degrees Fahrenheit).

Rainfall: Approximately 0.25 centimeters (1 inch) of rain is received in the desert.

Climate of Deserts

Average Temperature

All months in the desert have an average temperature of 18 degrees Celsius (64 degrees Fahrenheit). There is also very little humidity, if any.

Average Rainfall

Deserts receive approximately 2.5 centimeters (1inch) of rain each year. However, American deserts can receive up to 28 centimeters (11 inches) per year.

Seasonal Changes

The desert stays about the same temperature year-round, however there are some changes that occur throughout the year. During the spring, desert wildflower will start to bloom. During the fall, the summer flowers dry out, lizards go underground, and there are late tropical storms.

Plant Life

Plant life, for the most part, is scarce. However there is more plants than you would expect.


Deserts are home to a vary diverse population of animal species ranging from rattlesnakes to coyotes.


An example of cooperation in the desert is the relationship between two species sharing a burrow. One animal digs while the other offer protection. A lot of predators stop going after species living with a rattlesnake.


An example of competition in the desert is when cacti are forced to compete for root space. They need to continue spreading their roots to absorb water for the cactus to survive, but since water is scarce, they must compete.

Predator/Prey Relationships

1. Hawk and Lizard

2. Scorpion and Insects

3. Mountain Lion and Mule Deer

4. Tarantula Hawk and Tarantula

Intersting Fact about the Desert

The desert is the hottest biome on Earth. It can be well over 100 degrees Fahrenheit during the day, but it can get down to 32 degrees Fahrenheit at night.

Ecological Concerns

Threats to the Desert

1. Higher temperatures may produce an increasing number of wildfires.

2. Irrigation used for agriculture, may in the long term, lead to salt levels in the soil that become too high to support plants.

3. Potassium cyanide used in gold mining may poison wildlife.

4. As people migrate to warmer climates, human expansion occurs in the deserts.

Endangered Species

1. Fennec Fox

2. Pronghorn

3. Caracal

Global Importance of the Desert Biome

Deserts are home to one-sixth of the world's population, and two-thirds of the world's crude oil is found by the drilling in the desert. The desert also is a great area to generate wind and solar energy.


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