1. Interdependence within Environmental Systems

2. 11D Ecological Succession
2 types of succession
Primary-
Secondary-
Discuss with partner what you know about each.
Succession video
What are pioneer species?

3. Primary succession

4. Secondary Succession

5. Fact or Fib Primary succession takes only a few years.
Secondary succession is a result of volcanic activity like Mt. St. Helens.
1’ has lichens and moss as the first pioneer species.
2’ is the rebuilding of an established area.
Climax communities will be reached about the same time.
Hurricane destruction is an example of 1’.

17. Bastrop State Park faces setback following rain

18. 12A Relationships Among Organisms
Symbiotic relationships
5 types
Predation + -
Competition + -
Parasitism + -
Commensalism + 0
Mutualism + +

19. Symbiotic relationship card activity
Each card will have a buddy card that creates one of the 4 symbiotic relationships. EX: lion and wildebeast.
Put the 4 relationship cards at the top of your desk. Which type of relationship is the example? Place the cards in that category.
GO!!!! First one all correct gets a prize.

20. 12C Matter and Energy Flow—food web and energy pyramids.
What do the arrows in a food chain or web show?
Flow of energy—only goes up.
What is a producer?
Makes its own food—plants.
Located where in food chain/web?
Bottom

21. What is a(n) ………….
Herbivore
Carnivore
Omnivore
Detritivore
decomposer

22. Trophic levels (energy levels)

23. Levels of food web Producer First level (order) consumer
Second level (secondary) consumer
Third level (tertiary) consumer
Fourth level (quaternary) consumer (TOP)

24. Marine food web

25. Desert food web

26. Forest food web

28. Ecological pyramids
Biomass

29. Energy pyramid
Stored energy decreases as the pyramid increases

30. 10% rule

32. biomagnification
Increasing amounts of toxins (poison) as you go up the pyramid

33. DDT was a pesticide used
to rid crops of bugs. Runoff into
rivers and streams.

36. 12F Environmental Change
Ecosystem stability—examples
Cycles
N-nitrogen—bacteria turn nitrogen into different form plants can use
C-carbon—most carbon stored in ground but disrupting can release
P-phosphorous—used in DNA-making amino acids which make proteins
Water-recycle the water
Oxygen-photosynthesis

37. https://www.youtube.com/watch?v=nzImo8kSXiU carbon cycle
nitrogen and phosphorous cycle
What happens if one is disrupted?