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Grass  Lands  Power  Point Grass Lands Power Point Presentation Transcript

  • Tall Grass Prairies By Emily Ruth, Jesse, Desiree
  • Where is it…?
  • Between the Mississippi River and Nebraska
  • Climate Conditions
    • receive about 10 inches in the west and 30 inches in the east of rain per year
    • Growing Season
      • Late Spring to early fall
      • 50 degree F to 70 on average
    • Dormant Season
      • Late fall to early spring
      • -40 degree F to 50 degree F
    • Tall trees are not able to grow here because there is not enough precipitation
  • Soil?
    • dark brown or black in color
    • soils have formed under grassland vegetation
    • heavily influenced by the closely matted roots in the dense sod of the thick-growing grasses
    • roots eventually decay underground putting nutrients back into the soil, making it richer
  • Plant & Their Adaptations
    • Asters, sunflowers, crazy weeds, blazing stars, cone flowers, goldenrods, clover, wild indigo, corn and wheat
      • Corn and wheat can store water, allowing them to survive through droughts
    • Forbs: stems are soft to bend in the wind
    • narrow leaves that lose less water
    • have very extensive and deep root systems to accumulate water
    • wildflowers have a very upright form in order to compete for sunlight.
    • grow close together that allow for the plants to support each other
  •  
  • Animal & Their Adaptations
    • EX: Eagles, gray wolves, crickets, bison, deer, rabbits, and small rodents and insects
    • Many are burrowing animals
      • Security from the weather so their young can grow
      • A place to live
    • Travel in large herds
    • Larger animals have thick fur to protect them from harsh winters
  •  
  • Negative Human Impact
    • Acquisition of Louisiana Purchase though to be useless grasses
    • Planted non native plants for value ex; wheat and corn
    • Eliminated the native species
    • Now only 4% natural plants remain
    • Eliminated biodiversity