SUCCESSION



SUCCESSION

PRIMARY SUCCESSION ON A BEACH DUNE

The diagram below shows the stages in plant succession on a sand dune on the central Atlantic Coast of the United States. Use the diagram and your own prior knowledge to answer questions 1-5.

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1. What does the term "ecological succession" mean?_______________________________________________ ______________________________________________________________________________________

2. What is the pioneer species in this succession? ___________________________

3. What is the climax community in this succession? _________________________

4. This diagram focuses on changes in plants. How would you expect these changes to affect the animal community? ____________________________________________________________________________

5. How do you think the soil changes through the stages of succession?_________________________________ ______________________________________________________________________________________

Answer questions 6-11 based on the following picture

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6. Explain the process of primary succession as illustrated in the picture above (be specific):________________ ____________________________________________________________________________________________________________________________________________________________________________

7. What is a climax community? ______________________________________________________________

8. Which organism in the picture is the climax community?__________________________________________

9. How is secondary (2() succession different than primary (1() succession?____________________________ ______________________________________________________________________________________

10. Based on the picture, if you hiked through a patch of land that contained a pine forest into an area that contained a pine forest into an area that contained only ferns, shrubs, and grasses, would you be moving from an older to a younger community or vice versa? _____________________________________________________

11. What parts of the ecosystem in the above picture had to be established before primary succession could occur?_______________________________________________________________________________________________________________________________________________________________________

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