1. Succession in Ecosystems

2. Succession
a series of ____________ in a __________________ in which new populations of ___________________ gradually replace existing ones.

3. __________________________________
Primary succession-
colonization of new sites by communities of organisms – _________________________________
__________________________________

4. New bare rock comes from 2 sources:
Primary succession-
New bare rock comes from 2 sources:
1. ______________________________________
_________________________________________
2. ______________________________________

5. ___________________________
Pioneer organisms-
___________________________
Ex: lichens are the first to colonize lava rocks

6. Primary Succession-
Rock

7. Climax community-
_____________________________ _____________________________ _____________________________

8. Climax community-
Ex: In most of Virginia, the climax community would be a deciduous oak– hickory forest
                                                                                                                                

9. Primary succession-

10. Secondary succession-
sequence of community changes that takes place when a community is _____________________ by ______________ _______________ or _____________ actions – _______
____________________________________

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

12. Secondary succession-
Ex: A farmer plows his field

13. Secondary succession-

14. Secondary succession-