Mono Lake Food Webs

1
Mono Lake Food Webs

• Investigation 4

2
What are Ecosystems?

• An ecosystem is the interaction between the
  biotic and abiotic factors in a specific area.
• What were some of the interactions in the Mono
  Lake Ecosystem?

3
What are feeding relationships?

• Interaction between organisms where one organism
  eats another. (Feeding Relationship).
• Example California Gull and the Brine Fly

4
Organism Cards

• Organism Cards
• Photograph
• Scientific name
• Information about Life Cycle
• Information about feeding relationships
• Role in Ecosystem

5
Activity

• Work in groups of 2-4
• Read the cards to become familiar with all the
  organisms
• Organize the cards with picture side up
• Use the arrows to show feeding relationships
  between organisms
• Organisms can be in a feeding relationship with
  many organisms.
• 20 minutes on activity

6
How should arrows be drawn in a feeding
relationship?

• In the direction of the flow of energy
• Which is correct??????
• A. Fly ? Spider
• B. Fly ? Spider

7
Food Chains

• In an ecosystem, many organism survive by eating
  other organisms. The benefits of the food eaten
  by one organism can then move to another organism
  and another, as each one is eaten. The path that
  food takes from one organism to another organism
  is called a FOOD CHAIN.

8
One Food Chain in the Web

• Planktonic Algae
• Brine Shrimp
• California Gull
• Coyote

9
Food Web

• Interaction of many feeding relationships in an
  ecosystem.
• This is what you developed today.

10
Questions

• Which organisms in the food web do not eat any
  other organisms?
• How can they survive without eating other
  organisms?
• How do animals get their food?
• What are the decomposers in this food web?
• What are their roles in the food web?