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Desert Biome

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Desert Biome By: Michael Andrews Gisselle Morrobel * * * * * * * * * * * * * * * Introduction There are three types of desert biomes: - Cold Deserts: Long, cold ... – PowerPoint PPT presentation

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Title: Desert Biome


1
Desert Biome
  • By
  • Michael Andrews
  • Gisselle Morrobel

2
Introduction
  • There are three types of desert biomes
  • - Cold Deserts
  • Long, cold winters short, moist, warm summers
  • - Tropical Deserts
  • Hot summers and winters
  • - Temperate Deserts
  • Hot summers cold winter

3
Cold Deserts
  • Major cold deserts include
  • Atacama (coasts of Peru and Chile)
  • Gobi (northern China and southern Mongolia)
  • Great Basin (Western United States Idaho,
    Nevada, Oregon, and Utah)
  • Iranian (Iran, Afghanistan, and Pakistan)
  • Cold deserts are known for its cold snowy
    winters with heavy rainfall.
  • They have short, moist, slightly warm summers to
    contrast the long cold winters.
  • Locations
  • - Antarctica, Greenland, and near the Arctic
    realm

4
Cold Deserts
  • Temperature
  • Winter
  • (-2 to 4 degrees C)
  • Summer
  • (21 to 26 degrees C)
  • Precipitation
  • Annual Range 15-26 cm
  • - Max 46 cm
  • - Min 9 cm
  • Usually heaviest is in April and May of spring,
    but can also be heavy in autumn.

5
Cold Deserts
  • Common Species
  • Animals jack rabbits, kangaroo mice (Great
    Basin), whales, penguins (Antarctic regions)
  • Plants lichens, mosses, and algae (Antarctic
    regions), sagebrush (Great Basin), bunchgrass
    (Atacama)

6
Cold Desert
  • Endangered Species
  • Animals Blue Whale, Humpback Whale, Polar Bears
  • Plants Antarctic Cudweed

7
Cold Desert
  • Adaptation
  • Animals
  • Have thick skin for extra warmth.
  • Burrow beneath the ground to keep warm.
  • Plants
  • Most of these plants can grow at any season of
    the year since they survive the harsh cold
    winters of these deserts.
  • Have thick matted stem.
  • Most are scattered and tolerate cold moisture.

8
Cold Desert
  • Mans Influence
  • The release of carbon dioxide from near urban
    areas has increased the global temperatures which
    affect the climate of the cold deserts.
  • Also, certain ethnic groups such as Eskimos,
    Lapps, and Samoyeds include species of this
    environment in their daily diets.

9
Tropical Deserts
  • Locations
  • Between 15 and 30 degrees
  • Latitude, centered on the
  • Tropics of Cancer and
  • Capricorn
  • Sonoran Desert (southern Arizona, southeastern
    and Baja California)
  • Mojave Desert (Nevada, Arizona, Utah)
  • Saharah (North Africa)
  • Tropical Deserts are some of the driest places on
    earth.

10
Tropical Deserts
  • Precipitation
  • On average is less than 25cm in a year and is
    unreliable and very irregular.
  • Temperature
  • Average annual temperature is above 18 degrees C
    (64.4 F)
  • These deserts have the highest day temperatures
    of any other climate.

11
Tropical Deserts
  • Common Species
  • Animals Arabian Camel, Vampire Bat
  • Plants Elephant Tree (Sonoran Desert), Cardon
    Cactus (Baja California)

Elephant Tree
12
Tropical Deserts
  • Endangered Species
  • Animals Desert Tortoise (Mojave), Bald Eagle
    (Sonoran)
  • Plants Groundsel (Sonoran), King Protea (Sahara)

San Francisco Peak Groundsel
Desert Tortoise
13
Tropical Deserts
  • Adaptations
  • Animals
  • Many are nocturnal to avoid the heat of day.
    Others burrow and live beneath the surface to
    escape the extreme temperatures.
  • Plants
  • Conserve enough water to survive and release
    enough heat to not overheat .
  • Slow down growth for part of the year to conserve
    moisture.

14
Tropical Deserts
  • Mans Influence
  • Formation of large cities around the deserts has
    led to a spread in urban pollution.
  • Irrigation projects have allowed more plants to
    grow near and in these desert areas.

15
Temperate Deserts
  • Location
  • Great Basins of Nevada and Utah
  • Gobi Desert
  • Patagonia
  • Most occur on plains and plateaus.

16
Temperate Deserts
  • Precipitation
  • Less than 25 cm every year
  • They have a significantly long drought period to
    contrast a short humid period.
  • Most precipitation falls in winter except for a
    peak in May.
  • Temperature
  • Average annual temperature 20-25 degrees
    Celsius.
  • Can reach as high as 40 degrees C and as low as
    -18 degrees Celsius at night.
  • Has both summer and winter season where the day
    temperature decrease in the winter as opposed to
    the always hot tropical desert.

17
Temperate Deserts
  • Common Species
  • Animals Bactrian Camel, Zebratail Lizard
  • Plants Prickly Pear Cactus, Saxaul Tree (Gobi),
    Sagebrush (Great Basin)

Temperate Desert in North Dakota
Zebratail Lizard
18
Temperate Deserts
  • Endangered Species
  • Animals Gobi Desert Bear
  • Plants Eureka Valley Evening Primrose

19
Temperate Deserts
  • Adaptations
  • Animals
  • Some (like camels) have systems to conserve
    water.
  • Others have nocturnal lifestyles to avoid the
    heat of day or may live or hide in burrows to
    escape hot weather.
  • Many are small creatures (like reptiles).
  • Plants
  • Thick stems supply enough water for survival.
  • Some trees (like saxaul tree) store water in the
    bark.
  • Leaves allow water to escape so many of the
    plants have small leaves that fall off in dry
    weather.
  • Sagebrush roots extend far out in all directions
    to absorb water efficiently.

20
Temperate Deserts
  • Mans Influence
  • Humans have disturbed the land to make it
    suitable for agriculture.
  • Also use desert to extract minerals.

21
Closing
  • Characteristics of each desert tend to overlap at
    times, but each has unique features that set them
    apart.

22
Closing
  • Characteristics of each desert tend to overlap at
    times, but each has unique features that set them
    apart.

Desert Video
23
Bibliography
  • http//www.ucmp.berkeley.edu/exhibits/biomes/deser
    ts.php 
  • http//www.vtaide.com/png/oceanchain.htm
  • http//www.mbgnet.net/sets/desert/cold.htm
  • http//www.sterlingschools.org/shs/stf/cjones/3rdH
    our/Cold20Desert/ColdDesertBiome.htm
  • http//www.earthsendangered.com/continent2F.html
  • http//www.uwsp.edu/geo/faculty/ritter/geog101/uws
    p_lectures/climates_tropical_desert.html
  • http//www.gardenguides.com/100910-endangered-plan
    ts-desert-biome.html
  • http//www.blueplanetbiomes.org/desert.htm
  • http//www.botany.wisc.edu/courses/botany_422/Lect
    ure/Lect09Desert.html
  • http//www.ehow.com/about_6136933_temperate-desert
    -plants.html
  • http//www.buzzle.com/articles/gobi-desert-animals
    .html
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