Succession and soil formation
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Succession and soil formation

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  • 1. 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/
  • 2. Types
  • 3. 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/
  • 4. Secondary succession
    • due to disturbance of an existing community
    cc licensed flickr photo by pinegar: http://flickr.com/photos/pinegar/384646425/
  • 5. 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/
  • 6. 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/
  • 7. Causes of succession
  • 8. 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/
  • 9. Growth of a new community starting from bare rock cc licensed flickr photo by wanderflechten: http://flickr.com/photos/29750062@N06/2991832375/