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Succession and soil formation
 

Succession and soil formation

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    Succession and soil formation Succession and soil formation Presentation Transcript

    • Succession Process by which one community replaces another, mostly by predictable and orderly changes in the composition or structure of an ecological community cc licensed flickr photo by stolenbyme: http://flickr.com/photos/stolenbyme/33471969/
    • Types
    • Primary succession
      • Development of a community starting from bare rock.
      • Part of process of soil formation
      cc licensed flickr photo by nbonzey: http://flickr.com/photos/thebonzey/505374606/
    • Secondary succession
      • due to disturbance of an existing community
      cc licensed flickr photo by pinegar: http://flickr.com/photos/pinegar/384646425/
    • Pioneer plants
      • First plants to grow in an area during the process of succession.
      • In primary succession, pioneer plants are part of the process of soil formation.
      • In secondary succession, pioneer plants colonize open spaces and stabilize (and fertilize) the soil
      cc licensed flickr photo by stolenbyme: http://flickr.com/photos/stolenbyme/33471969/
    • Climax community
      • The community in an area which is a result of the process of succession.
      • The climax community is not replaced by other plants/animals, but rather maintains itself homeostatically.
      • The composition of the climax community of an ecosystem depends on the soil and other climate conditions in an area.
      cc licensed flickr photo by J. Star: http://flickr.com/photos/jstar/109974710/
    • Causes of succession
    • Disturbance of a community
      • by natural event such as forest fire, flood
      • by human actions such as clearing a forest by harvesting trees
      cc licensed flickr photo by yuan2003: http://flickr.com/photos/yuan2003/1875040848/
    • Growth of a new community starting from bare rock cc licensed flickr photo by wanderflechten: http://flickr.com/photos/29750062@N06/2991832375/