1. PTT 31AUG2015 What does it mean to interact?
Hypothesize what an ecological interaction is. Provide an example.

2. Everything Interacts! Biotic + Abiotic = Ecosystem
We are focused now on the biotic interactions

3. Ecological Interactions
Predation
Competition
Symbiosis

4. Competition
Struggle for the same resource

5. Predation One organism get dinner, the other organism is dinner
A predator
A prey

6. Symbiosis
Commensalism
Mutualism
Parasitism

7. Commensalism
One organism benefits and one is not harmed and does not benefit

8. Parasitism
One organism benefits and one is harmed

9. Mutualism
Both organisms benefit from the interaction

10. Ecological Interactions
Predation
Competition
Symbiosis
Predator
Prey
Mutualism
Parasitism
Commensalism
Host
Parasite

12. PTT 01SEP2015 What is your favorite ecological interaction? WHY?
What biotic interactions have you observed in the last week?

13. Ecological Interactions
Predation
Competition
Symbiosis
Predator
Prey
Mutualism
Parasitism
Commensalism
Host
Parasite

14. 1. The Nutcracker and the Limber Pine

15. 2. Bark Beetle and Lodge pole Pine

16. 3. Lynx and the Snowshoe Hare

17. 4. The Ptarmigan and the Willow

18. 5. The Uncompahgre Fritillary Butterfly and the Snow Willow

19. What an organism eats can provide insight to ecologists about an organisms niche.
Niche: in Ecology, the position or function of an organism in a community of plant and animals.
How can we demonstrate who eats who?

20. Food Pyramid

21. Food Web

22. Rules for Food Webs
ALWAYS begins with the sun

23. Rules for Food Webs ALWAYS begins with the sun
The first organism is always a producer

24. Rules for Food Webs ALWAYS begins with the sun
The first organism is always a producer
Always ends with a decomposer

25. Rules for Food Webs ALWAYS begins with the sun
The first organism is always a producer
Always ends with a decomposer
Arrows point to the EATER

30. PTT SEP2015
Create a food web with the following:

32. Energy Flows and Matter Cycles

33. Producers autotrophs = “self” “feeding” Make their own food
Use the energy of the sun to make energy, other organisms use this energy
Examples??

34. Consumers Heterotroph = “other” “eater” HAS TO EAT to survive
Herbivore
Carnivore
Scavenger
Omnivore

35. Scavengers

39. Energy Pyramid

41. Open to page 727
We will write a summary sentence for the first paragraph together
Define the words in yellow in the vocabulary section of your notebook
Summarize each paragraph and complete the 3 “self check questions” on page 729

43. PTT 03SEP2015
Make a list of the producers, primary consumers, secondary consumers, and tertiary consumers from this food web

44. Open to page 727
We will write a summary sentence for the first paragraph together
Define the words in yellow in the vocabulary section of your notebook
Summarize each paragraph and complete the 3 “self check questions” on page 729

45. Pyramid/Food Web Practice
Complete the Food Web and food pyramid WS
Turn it in when you are done!

47. PTT 04SEP2015 Take out you ecological picture.
Write the interactions and what organisms are interacting that you see in your picture (or imagine are there)
Draw a food web for all the organisms (you may draw on your picture)

48. Ecological Niche
How a specific species exists in a specific habitat

50. Which Niche?