Desert Ecosystems.

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Presentation transcript:

Desert Ecosystems

Desert – an ecosystem found where there is very little rainfall. Deserts are dry and hot. There are very few clouds. Two kinds of deserts: Hot deserts Cold deserts Temperatures are very warm all year round The summers are very hot Short, warm summers Long, cold winters Found in places near the north and south poles

Desert Plants Many plants are found in the desert. They usually grow close to the ground. These plants have special parts that help them save water. The special parts are: thick stem, shallow and wide roots, and thick skin covered with spines instead of leaves.

Desert Animals There are many animals in the desert. They can survive by eating other animals or by eating plants that store water. To protect them from the hot sun, they stay in the shade or in their shelter. Animals may build their shelters inside plants. Some animals sleep during the day and are active at night. Some animals have hard shells to protect them from losing much water. More animals live in hot deserts than in cold deserts.

Anteater Camel Roadrunner Gila monster (lizard) Scorpion

Deserts in the United States Great Basin Desert Mojave Desert Chihuahua Desert Sonoran Desert

Great Basin Desert Idaho California Nevada Utah

Mojave Desert Utah California Nevada Arizona

Chihuahuan Desert Arizona New Mexico Texas

Sonoran Desert California Arizona

Review What is a desert? How do plants survive in the desert? How do animals survive in the desert?

Learn more about deserts http://pubs.usgs.gov/gip/deserts/what/ What is a Desert? http://mbgnet.mobot.org/sets/desert/tplants.htm Desert plants http://www.harcourtschool.com/activity/typesofland/d3.html Chihuahuan Desert http://africa.mrdonn.org/saharadesert.html Sahara Desert: The Sea of Sand http://www.equipped.com/21-76/ch13.pdf Desert Survival http://www.ehow.com/list_6828168_list-jobs-desert.html Jobs in the Desert