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Boreal Forest

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Boreal Forest Daniel, Gage, and Kevin Description and general information The Boreal Forests are located in the upper middle areas of North America and Eurasia that ... – PowerPoint PPT presentation

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Title: Boreal Forest


1
Boreal Forest
  • Daniel, Gage, and Kevin

2
Description and general information
  • The Boreal Forests are located in the upper
    middle areas of North America and Eurasia that
    stretch across the continents.
  • The Boreal Forest, also called Taiga which is
    Russian word that descibes the swampy nature of
    much of this forest in the summer, that it lies
    to the south of the tundra anto the north of
    deciduous forests and grasslands.
  • The dominant plant life is coniferous trees,
    which are evergreens. These trees are suited for
    the cold climate and limited amount of water. The
    water that is there may be frozen mostly all
    year. The types of trees are pines, furs,
    spruces, hemlocks, and larches.
  • Other plants that are important are mosses and
    lichen. They are a major food source for the
    animals.
  • The indicator animals are Lynx, Elk, Porcupine,
    and Snowshoe Hare in North America, and the
    Siberian Tiger in Eurasia. 

3
Climate
  • The climate of the Boreal Forests is cold. The
    average annual temperatures are from about -5 to
    5 C. (23 to 41 F)
  • The winters are cold and long while the summers
    are relatively short and cool.
  • The precipitation varies, from 20 cm (7.87 in) a
    year to over 200 cm (78.7 in). Most of the
    precipitation is in the form of snow.
  • With snowmelt and low temps, there is little
    evaporation in the summer, so the ground is usual
    very moist during the growing season.
  • The Boreal Forests are located in the lower area
    of the polar climate zone. It is classified as a
    subarctic climate zone where it is more moderate
    climate.  

4
Biomass Productivity
  • Biomass is the total mass of living matter within
    a given unit of environmental area.
  • Productivity The rate at which radiant energy is
    used by producers to form organic substances as
    food for consumers

5
Threats
  • The biggest threat to this Biome is Human
    activity. Humans take advantage of these forests
    by cutting trees down for toilet paper, copy
    paper, newspapers, etc. Canada is one of the
    countries that have the most effect on this
    biome. Also another threat by humans is the
    industrial use within this areas. It
    threatens the biome by polluting it all over.
  • Even thought humans threaten the Boreal Forest,
    some insects damage the forest such as the
    spruce-bark beetle, the aspen-leaf miner, the
    larch sawfly, the spruce budworm and the
    spruce coneworm. 

6
Lynx
  • The lynx's large, padded paws are an adaptation
    to walking on snow, which allows them to travel
    and hunt in their snowy, high altitude habitats.
  • The Canadian lynx depends almost exclusively on
    the snowshoe hare as prey. A regular fluctuation
    in the snowshoe hare population every 10 years
    directly impacts the lynx.

7
Lichen
  • Lichen can survive extremes like heat, cold, and
    drought by shut down their metabolism to survive
    in unfavorable conditions.  Lichens produce more
    than 500 unique biochemical compounds that serve
    to control light exposure, ward off herbivores,
    kill attacking microbes, and dispirit competition
    from plants. Among these adaptations  are many
    pigments and antibiotics that have made lichens
    very useful to people in traditional societies.
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