1. Ecology: Food Webs
EQ: How does the movement of matter and energy through biological systems impact you?

2. Put the following organisms into a food chain
Big Birds
Plants
Small Birds
bacteria
Caterpillars

3. Ecology
relations of organisms to one another and to their environment

4. Feeding Relationships
Producers
Consumers
Herbivores
Carnivores
Omnivores
Detritivores
Decomposers
Feeding Relationships

5. Feeding relationships
Producer:
Are also called autotrophs.
Capture energy from the sun and create their own food supply.
Example: Plants
Consumers:
Are also called heterotrophs.
Get energy from eating other organisms.
Example: Animals

6. Types of Consumers An organism that eats producers (plants).
Herbivores:
An organism that eats producers (plants).
Example: Rabbit

7. Types of Consumers Carnivores:
An organism that eats other consumers (animals).
Example: Snake

8. Types of consumers Omnivores:
An organism that eats both plants and animals.
Example: Raccoon

9. Detritivores Types of Consumers
An organism that consumes nonliving matter.
Example: Millipedes

10. Types of consumers Decomposers
An organism that breaks down organic matter.
Example: Fungi

11. Feeding Relationships
Food chain- shows a single path of energy transfer
start with energy from the sun
first level is plants

12. Feeding relationships:
Food webs- the network of feeding relationships and the Many pathways of energy Flow
Entire ecosystem

13. How are food chains different from food webs?
Stop and think
How are food chains different from food webs?

14. Tropic Levels Producer (autotroph) Primary consumer Secondary consumer
Tertiary consumer

15. Producer (autotroph) Produces its own food with energy from sun
Color the Phytoplankton and algae the same color

16. Primary consumer These are the Herbivores and they eat the producers
Color the Zooplankton, shrimp, and parrotfish
Draw an arrow from the producers to the primary consumer

17. Secondary consumer
Can be omnivores or carnivores and Eat the primary consumer
Color the sponge, jellyfish, sea turtle and triggerfish
Draw an arrow from the primary consumer to them

18. Tertiary consumer Only carnivores and they eat the 2nd consumer
the Reef shark
Draw arrow from secondary consumers to them

19. Stop and Think: What is our food web missing? Why is that important?
Decomposers! They Break down dead organisms and give nutrients back into the environment so the producers can grow nice and healthy

20. Arrows represent Energy Flow!
STOP AND THINK:
If the consumer is eating the producers, why do the arrows point from the producer to the consumer?
Arrows represent Energy Flow!

21. Stop and Think
How would this ecosystem be impacted if the shark was absent?

22. Keystone Species
Keystone Species: A species that has a strong or wide reaching impact on a community; can affect many other species.

23. CFU- Feeding Relationship
For each of the following feeding roles, identify one organism in the food web that fulfills that role: herbivore, producer, heterotroph, autotroph, carnivore, secondary consumer.
Herbivore – Grasshopper
Producer – Corn
Heterotroph – Thrush
Autotroph – Corn
Carnivore – Wolf
Secondary Consumer – Frog

24. Feeding Practice
What would happen if the national park service allowed wolves to be hunted again?
What would happen if overuse of pesticides caused frog populations to decline?
What would happen if lavenders were outcompeted by an invasive plant?

25. What kind of chain is edible?
A food chain!

26. Producer Energy pyramid Primary Consumer
Diagram that compares energy used by producers, primary consumers, and other tropic levels
Tertiary consumer
Secondary Consumer
Primary Consumer
Producer

27. The 10% Rule

28. The rule of 10%
Every time energy moves up a trophic level, 90 percent of the energy is lost and only 10 percent of the energy is transferred

29. Add to the pyramid in your notes
If the Producers have 9998 kcal, how much will be transferred to the next trophic level?
9998 X 10% = ?
mover the decimal place left 1 position
 999.8
that is your answer!
Add to the pyramid in your notes

30. If the Primary Consumer have 999
If the Primary Consumer have Kcal, how much will be transferred to the next trophic level?
999.8 X 10% = ____________
Add to your pyramid
99.98 Kcal

31. If the Primary consumers have 999
If the Primary consumers have kcal, how much will be transferred to the next trophic level?
X 10% = ____________
Tertiary consumer? ______________
Add to your pyramid
kcal
kcal

32. Practice – 10% Rule
If the fruit fly contains 112 kcal of energy, how many kcal of energy does the thrush get?
11.2 kcal
If the eagle only received .01 kcal of energy, how much energy was in the grasshopper?
1 kcal
If the flowering plant has 316 kcal of energy, how much energy does the python get?
.316 kcal

33. Food chains and energy pyramids
C- level 2 voice
H- ask 3 before me
A- Work on creating a food web for the organisms on your table then complete the chart AND PASTE INTO THE LEFT SIDE OF YOUR NOTEBOOK
M- remain at your assigned table, walking around is a strike!
P- work with your team to compete
Success