1. Ecosystem notes and mono lake food web activity

2. Feeding Relationships
What are some words you’ve heard before that would describe a feeding relationship in an ecosystem?

3. When setting up a food web:
The arrow always goes the direction in which the energy is being transferred. Here’s an example:
Spider and fly…who eats who?
Will the arrow be pointing down or up?
Spider
Fly

4. Please clear everything off your desk

5. Instructions – Mono Lake activity
Read the cards and become familiar with the organisms and their feeding relationships (who eats who?).
Using the arrows provided, show the feeding relationships between the organisms
Every organism should be included.
If an organism is involved in two or more feeding relationships, all the relationships should be indicated with arrows.

6. Question #1
In an ecosystem, many organisms survive by eating other organisms. The benefits of the food eaten by one organism can then move to another organism an another as each one is eaten. Can anyone tell me what we call the path that food takes from one organism to another? Food Chain

7. Question 2
Name one food chain that you can find in your food web. Planktonic algaeBrine ShrimpCalifornia gullcoyotedecomposer

8. Question #3
Many of the organisms in your feeding-relationship projects are connected with more than one arrow. One organism, phalaropes, eat multiple organisms. Brine shrimp, are eaten by many organisms. When you connect all the organisms with arrows, the arrows cross each other in a complex way. Can anyone recall what we call this diagram that shows all the feeding relationships?
Food Web

9. Question 4 – A, B, C
Which organisms in the food web do not eat any other organisms?
producers/algae
How can they survive without eating?
Sun, photosynthesis
What do we call organisms that make their own food?
Producers or autotrophs

10. They eat other organisms
Producers like algae make their own food, but animals, like brine shrimp and gulls, don’t make their own food. How do animals get their food?
They eat other organisms

11. Question #5 – A,B,C,D
What do we call organisms that eat other organisms?
Consumers or heterotrophs
Consumers can be classified even more specifically. What do we call consumers that eat producers?
Primary Consumer or 1st level
What do we call consumers that eat primary consumers?
Secondary Consumers or 2nd level
What do we call consumers that eat secondary consumers?
Tertiary or (Third-level) Consumers

12. Question #6
Some organisms are never eaten by consumers, but instead die natural deaths. Dead organisms are broken down and consumed by microorganisms. How do we classify these microorganisms?
Decomposers
Organisms like bacteria and fungi are decomposers. Everything that is not eaten by a consumer is eventually eaten by decomposers.

13. KEY POINT – Question #7
Everything at every level eventually dies and is decomposed. Decomposers are connected to everything in the food web.

14. Notebook page 11
You will have 5 minutes to individually work on this assignment.
After 5 minutes you will turn to your neighbor to discuss.
Redraw your answer at the bottom of page 11

15. Exit Slip Due by the end of class
Turn in to your class tray when finished
Level 0 while completing the assignment so everyone can focus, please!

16. Warmup
1. Use the words producer, secondary consumer, tertiary, primary consumer, decomposer to fill in the following energy pyramid
Grass  cricket  snake  hawk  bacteria
Identify the decomposer
Identify the producer
Which organism has more energy available– grass or hawk
True or false: Energy flows from snake to cricket.