Temperate rain forests by ert554898

VIEWS: 7 PAGES: 22

									Coastal and Southern Alaska




  Scott Anderson, Rebecca
Dombrowski and Michael West
           Monday July 3rd
 Climate
    Precipitation
    Weather
    Maritime Affects
    Winds/Pressure Systems
 Ecosystem
    Disturbances
    Succession
    Limiting Factors
    Biosphere
       Specific Plants
    Land Activities
 Fauna
          Precipitation
 Average annual precipitation
  ranges from 21 to 78 in.
 Fall/Winter Months
 Kodiak: 5 in. in summer 7 in. in
  winter
   Weather and Hazards
 Moderate
 Avg. 30’s in Winter 50’s in Summer
 Temps can range into the -20’s
            Insolation
 Tilt 18-6 hrs.
 Albedo
Pressure Systems and Winds
 Aleutian Low, North Pacific High
 High winds, sometimes up to 50
 mph in winter
Disturbances: Oil Spills
Disturbances: Artic Fox
Secondary Succession
Primary Succession
      Recovery from Fox
 Changes seen in past 30 years as
 fox are removed from the islands
  • Some bird populations have
    stabilized, while others face
    extinction
 Stability
Fox Free
       Limiting Factors
 Insolation
 High Winds and Intense Storms
  • Islands are Devoid of Trees
 Introduced Species
    Disturbance Regimes
 Volcanic Activity
 Earthquakes
 Tsunamis
 Landslides
 Constant High winds and Storms
Volcanic Activity
Ghost Forest
Tundra and Temperate
     Rainforest
          Land Activities
 Hikes
 Flora
 Fauna
 Glaciers
 Volcanoes
                   Biosphere
 Sufficient sunlight penetrates the canopy to support a
  well-developed under story composed of shrubs, a layer
  of herbaceous plants, and then often a ground cover of
  mosses and ferns. This stratification beneath the canopy
  provides a numerous habitats for a variety of insects
  and birds. The deciduous forest also contains many
  members of the rodent family, which serve as a food
  source for bobcats, wolves, and foxes. This area also is a
  home for deer and black bears. Winters are not as cold
  as in the taiga, so many amphibian and reptiles are able
  to survive.
 Scientists say that there is more biomass in this biome
  than in any other biome on earth. There may be 500
  tons of living things per acre here! That translates down
  to about 206 pounds per square yard, about the same as
  one good sized human adult per square yard.
                              Trees
 the topmost layer of the temperate rain forest on the western edge of
  North America is dominated by four kinds of tall coniferous trees.
  These are:
     The Douglas-Fir:The Sitka SpruceThe Western Red CedarThe
  Western Hemlock When these trees are full grown, they are between
  130 to 280 feet tall.In some areas other conifers dominate. For
  example, in California redwood trees grow in the temperate rain
  forest.
    Small shade-loving trees, such as dogwoods and vine maples, form
  the understory level. Beneath the trees, shrubs such as wild currants,
  thimbleberries, and huckleberries grow in the filtered sunlight. Sword
  ferns, salal, and Oregan grape plants also thrive here.
 At the ground level, the earth is littered with dead fir needles, leaves,
  twigs, and fallen trees. These lie on and under a thick carpet of
  mosses, lichens, grasses, and small plants, such as Oregon oxalis
  (which has leaves like a shamrock). The rocks are green with moss,
  and the tree trunks and branches are covered with moss and algae.
  These low-growing plants are shade tolerant. Here and there one may
  find toadstools, mushrooms, and other kinds of fungi: these
  saprophites (organisms that digest dead organic matter) help to
  recycle the dead material on the forest floor.
               Animals
 Most of the animals in this forest live on
  or near the ground, where there is lots
  of food, and the trees provide shelter
  from sun, wind, and rain. Beetles
  burrow in the moss and hide in the bark
  of trees. Wood peckers and birds eat the
  insects. Grass is eaten by the voles
  (cute little mouse-like animals) and the
  deer.
          Conclusion
 Come See Coastal Alaska

								
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