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CHAPTER 6: BIOMES - PowerPoint PPT Presentation


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CHAPTER 6: BIOMES. SECTION 6.1 WHAT IS A BIOME?. A BIOME IS A LARGE REGION CHARACTERIZED BY TWO FACTORS: CLIMATE AND PLANT LIFE. CLIMATE IS THE WEATHER CONDITIONS (TEMPERATURE AND PRECIPITATION) IN AN AREA OVER A LONG PERIOD OF TIME. PLANT LIFE.

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section 6 1 what is a biome
SECTION 6.1 WHAT IS A BIOME?
  • A BIOME IS A LARGE REGION CHARACTERIZED BY TWO FACTORS: CLIMATE AND PLANT LIFE.
  • CLIMATE IS THE WEATHER CONDITIONS (TEMPERATURE AND PRECIPITATION) IN AN AREA OVER A LONG PERIOD OF TIME.
plant life
PLANT LIFE
  • THE TWO MAIN FACTORS THAT DETERMINES WHAT TYPE OF PLANTS GROW IN A BIOME ARE TEMPERATURE AND PRECIPITATION.
latitude vs altitude
LATITUDE VS. ALTITUDE

LATITUDE

ALTITUDE

  • THE DISTANCE NORTH OR SOUTH OF THE EQUATOR MEASURED IN DEGREES.
  • THE HEIGHT OF AN OBJECT ABOVE SEA LEVEL.
tropical rain forest
TROPICAL RAIN FOREST
  • LOCATED ON OR NEAR EQUATOR
  • WARM YEAR ROUND
  • LOTS OF PRECIPITATION
  • MOST BIODIVERSITY OF ANY BIOME
  • SOIL IS NOT NUTRIENT RICH
layers of the rain forest
LAYERS OF THE RAIN FOREST
  • Emergent layer is on top with direct sunlight = tallest trees
  • Canopy (lower and upper) has lots of animals, flowers, fruits and epiphytes.
  • Understory gets very little light so plants adapted to shade live here.
threats to the rainforest
THREATS TO THE RAINFOREST
  • HABITAT DESTRUCTION
  • TRADING OF EXOTIC PLANTS AND ANIMALS
temperate rain forest
TEMPERATE RAIN FOREST
  • LARGE AMOUNT OF RAINFALL
  • HIGH HUMIDITY
  • MODERATE TEMPERATURES
  • LOCATED IN PACIFIC NORTHWEST
temperate deciduous forest
TEMPERATE DECIDUOUS FOREST
  • LOCATED ALONG EAST COAST
  • HAS FOUR SEASONS
  • MOSTLY DECIDUOUS TREES THAT LOSE LEAVES IN WINTER
  • PLANTS ARE ADAPTED FOR SEASONAL CHANGES AND ANIMALS ARE ADAPTED TO USE FOREST FOR FOOD AND SHELTER
taiga
TAIGA
  • LOCATED JUST BELOW THE ARCTIC CIRCLE
  • LONG WINTERS
  • LITTLE PRECIPITATION
  • ACIDIC SOIL
  • CONIFEROUS TREES
  • ANIMALS MIGRATE AND USE CAMOUFLAGE AS ADAPTATIONS
two different grasslands
TWO DIFFERENT GRASSLANDS

TROPICAL GRASSLANDS

TEMPERATE GRASSLANDS

  • SAVANNAS OF AFRICA
  • HAVE WET AND DRY SEASONS
  • PLANTS AND ANIMALS HAVE ADAPTATIONS BASED ON THESE SEASONS
  • PRAIRIES IN U.S.
  • MOSTLY GRASSES
  • WHERE WE GROW OUR CROPS
  • FERTILE SOIL
  • GRAZING ANIMALS
threats to the temperate grasslands
THREATS TO THE TEMPERATE GRASSLANDS
  • FARMING LEADS TO SOIL EROSION
  • OVERGRAZING ALSO LEADS TO SOIL EROSION
chaparral
CHAPARRAL
  • TEMPERATE WOODLAND BIOME
  • MEDITERRANEAN CLIMATE
  • PLANTS HAVE SMALL LEATHERY LEAVES.
  • PLANTS ARE ADAPTED TO FIRE
  • ANIMALS USE CAMOUFLAGE.
desert
DESERT
  • RECEIVE VERY LITTLE RAIN
  • VERY HOT DURING DAY BUT COLD AT NIGHT
  • PLANTS CONSERVE WATER
  • ANIMALS RETAIN WATER AND BURROW IN GROUND
tundra
TUNDRA
  • NORTHERN ARCTIC
  • PERMAFROST
  • THIN SOIL
  • PLANTS HAVE WIDE, SHALLOW ROOTS
  • GROW CLOSE TO GROUND
  • ANIMALS MIGRATE
  • OTHERS ARE WELL INSULATED AND USE CAMOUFLAGE
threats to the tundra
THREATS TO THE TUNDRA
  • OIL EXPLORATION
  • POLLUTION
  • DISRUPTING THE SIMPLE FOOD CHAINS OF THIS VERY FRAGILE BIOME