Friday, August 12, 2011

Taiga

Taiga
  • largest biome
  • primarily a coniferous forest (evergreen trees with needles)
  • located between 50degrees latitude north and the Arctic Circle
  • fewer animal species
  • very very cold in the winter ; but snow and ice melts in the warm summer
    (Insects breed in melting water)
  • sun shines for days in the summer- near the top of the world
  • In the spring, birds come to nest and lay eggs and eat the plentiful insects


Facts
  • Average temperature is below freezing point for 6 months each year
  • total yearly precipitation is 12-33 inches.
    (Most comes from the warm, humid summer months instead of snowfall in cold winter)





  • Taiga Temperatures
    Low High
    Winter -65 F (-54 C) 30 F (-1 C)
    Summer 20 F (-7 C) 70 F (21 C)

  •  Long nights in winter and long days in summer
    (Due to the tilt of Earth on its axis)
  • prone to wildfires
    (adapted by growing thick bark)
  • Decomposition is slow
    - Because of cool temperature
    - Undecayed vegetation builds up on forest floor
    (feel like sponge)
    - soil is thin and lacking in nutrients
    (trees grow taller when warmer temperature allow faster decompositon, or by streams and rivers which carry nutrients from higher ground.
Taiga Plants
  • large and seemingly homogeneous
  • acres and acres of exact same species










Taiga animals
  • life can be cold, dreary and diffcult due to snow, cold and a scarcity of food
  • taiga animals must adapt to survive ; some migrate, some hibernate, some simply cope with the environment
  • Includes hawl owl, pine grosbeak, ermine, lynx, wolverine






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