1. ECOSYSTEM DEVELOPMENT

2. Succession: Ecosystem Development

5. The two types of Succession : Primary & Secondary

6. Primary succession occurs on essentially new substrata: water or land that has never been colonized before.

7. SUCCESSION THAT BEGINS ON A STERILE AREA WHERE CONDITIONS OF EXISTENCE ARE NOT AT FIRST FAVORABLE IS TERMED: PRIMARY SUCCESSION

8. Can you think of any examples where conditions for living organisms would be unfavorable at first?

9. VOLCANO ISLAND- when it starts nothing is living on it until stuff gets washed up on shore and life begins

10. MORE EXAMPLES: GLACIERS

11. AND SAND DUNES!!!!

12. So given the definition of Primary Succession, can you predict what secondary succession would be?

13. The term SECONDARY SUCCESSION refers to community development on sites previously occupied by well-developed communities, or succession where nutrients and conditions of existence are already favorable. Can you think of where some examples of this type of succession would take place?

14. FIRE- FLOODS- ABANDONED FARMLAND

15. Succession starts with a pioneer community : The first biotic factors that can survive and tolerate the abiotic conditions. PIONEER ORGANISMS: Bold enough to go where no organisms have gone before.

16. Pioneers: First organisms in ecosystem Examples: LICHEN (combo of algae and fungus), GRASSES

17. After a pioneer community is established nutrients increase along with other favorable abiotic and biotic factors that allow the ecosystem to continue to change into other developmental stages.

18. The various stages are called… SERAL STAGES Eventually the ecosystem will reach a steady state which is called a CLIMAX COMMUNITY

19. Examples of seral stages of succession:

21. Index Species

25. Try the B.I. Problems in your packet.

28. In this unit we are going to spend some time considering the primary succession of Sand dunes of Lake Michigan .

29. Illinois Beach State Park, a field trip through time!

31. Pictures of the Dead River

32. Looking west from the mouth of the river

33. Mr. Piskel jumps the mouth of the Dead River.

36. If succession of the ecosystem is taking place it should be reflected by the type of plants, the biodiversity and the biomass of the plants as we move away form the lakeshore (back in time)

38. Pictures of some of the different plants and animals we find.

39. Sand sunflower

40. Prickly Pear Cactus? Say what?

41. Beach Worm Wood

42. Kill Deer: Nest on ground, can you see the egg?

43. Rare Lake Michigan Monster washed up on beach

44. At first we were scared but it was very friendly

45. Creeping Juniper

46. Plantain

47. Bear berry

48. Sand Cress

49. Wild Rose

50. Cottonwood tree

51. Deer Feces, not raisins!