Ch. 6 Biomes

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Ch. 6 Biomes

• Mrs. Sealy APES

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Tropic of Cancer
Equator
Tropic of Capricorn
Semidesert, arid grassland
Arctic tundra (polar grasslands)
Desert
Boreal forest (taiga), evergreen
coniferous forest (e.g., montane coniferous
forest)
Tropical rain forest, tropical evergreen forest
Mountains (complex zonation)
Temperate deciduous forest
Tropical deciduous forest
Ice
Temperate grassland
Tropical scrub forest
Fig. 6.16, p. 131
Dry woodlands and shrublands (chaparral)
Tropical savanna, thorn forest
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Polar
Subpolar
Temperate
Desert
Tropical
Desert
Fig. 6.17, p. 132
4
Low
Alpine Tundra
Montane Coniferous Forest
Elevation
Deciduous Forest
Tropical Forest
High
Tropical Forest
Temperate Deciduous Forest
Northern Coniferous Forest
Arctic Tundra
Low
High
Moisture Availability
Fig. 6.18, p. 133
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Plant and animal adaptations to climate

• For plants precipitation is generally the
  limiting factor in determining whether a climate
  is a desert, forest or grassland, but biomes are
  not uniform. They have the same general
  characteristics but there are microclimates that
  determine the actual plants you will find in any
  given area.

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Plants exposed to cold year around or in the
winter have

• Traits that keep them from losing too much heat
  or water
• They stay small

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Desert plants must be able to lose heat and
conserve water. They do this by

• Lose heat and store water
• Fleshy tissue, vertical, no leaves, store water

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In wet tropical climates the plants have

• Broadleaf evergreen, maximize sunlight

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In climates that are hot in summer and cold in
winter, plants have

• Deciduous leaves that fall off in winter

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In areas with cool short summers, the trees have

• Coniferous evergreen
• Needle shaped leaves