Succession

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Across
  1. 2. The specific role or "place" an organism occupies.
  2. 3. A plant succession in a saltwater environment.
  3. 4. A factor (like a steep slope) that stops succession.
  4. 8. The variety of different species in an ecosystem.
  5. 9. A stage arrested by human activity like grazing or burning.
  6. 10. A stage in a sequence of events by which vegetation develops.
  7. 11. The replacement of one plant community by another over time.
  8. 12. The most influential species in changing ecosystems worldwide.
  9. 13. The first plants to colonise an area.
  10. 15. When all potential roles are occupied, the community is considered ____.
  11. 16. A plant succession in a fresh water environment.
  12. 17. A plant succession in a rock environment.
Down
  1. 1. The final, balanced stage of vegetation.
  2. 5. The substance created by pioneers that allows larger plants to grow.
  3. 6. Intermediate stages in a succession.
  4. 7. A plant succession in a sandy environment.
  5. 9. The type of rock or mineral from which soil is formed.
  6. 13. The complete chain of stages from pioneer to climax.
  7. 14. The process of rocks breaking down, fastest in hot, wet climates.
  8. 15. Fast succession that occurs where soil already exists.