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Succession in Ecosystems

Succession in Ecosystems. SOL BIO 9c. Succession -. a series of changes in a community in which new populations of organisms gradually replace existing ones. Primary succession -. colonization of new sites by communities of organisms – takes place on bare rock. Primary succession -.

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Succession in Ecosystems

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  1. Succession in Ecosystems SOL BIO 9c

  2. Succession- • a series of changes in a community in which new populations of organisms gradually replace existing ones

  3. Primary succession- • colonization of new sites by communities of organisms – takes place on bare rock

  4. Primary succession- • New bare rock comes from 2 sources: • 1. volcanic lava flow cools and forms rock

  5. Primary succession- • New bare rock comes from 2 sources: • 2. Glaciers retreat and expose rock

  6. Pioneer organisms- • the first organisms to colonize a newsite • Ex: lichens are the first to colonize lava rocks

  7. Primary Succession- Rock

  8. Climax community- • a stable, mature community that undergoes little or no succession

  9. Climax community- • Ex: In most of Virginia, the climax community would be adeciduous oak–hickory forest

  10. Primary succession-

  11. Secondary succession- • sequence of community changes that takes place when a community is disrupted by natural disaster or human actions – takes place on existing soil

  12. Secondary succession- • Ex: • A fire levels portions of a forest

  13. Secondary succession- • Ex: • A farmer plows his field

  14. Secondary succession-

  15. Secondary succession-

  16. Pond Succession

  17. Pond Succession

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