Investigation 4.2

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Investigation 4.2

  1. 1. Feeding Relationship When organisms of an ecosystem interact by eating each other
  2. 2. Your Challenge <ul><li>Carefully read organism cards </li></ul><ul><li>Organize cards on the table showing feeding relationships </li></ul><ul><ul><li>Use arrows to show relationship </li></ul></ul><ul><ul><li>If organisms is involved in more than one feeding relationship, all the relationships should be indicated with arrows </li></ul></ul>
  3. 3. Arrow points away from the thing being eaten because the food value of the fly is going into the spider.
  4. 4. Food Chain <ul><li>The path that food takes from one organism to another organism </li></ul>
  5. 5. Planktonic Algae Brine Shrimp California Gull Coyote Sample Food Chain What do we do about organisms that are eaten by many organisms?
  6. 6. Food Web <ul><li>Shows ALL the feeding relationships in an ecosystem </li></ul>
  7. 7. Producers <ul><li>Members of the food web that make their own food </li></ul><ul><li>Producers produce the food that is used in an ecosystem </li></ul>
  8. 8. Consumer <ul><li>Organisms that eat other organisms </li></ul><ul><li>1 st level or primary consumer eats producers </li></ul><ul><li>Secondary consumers eat primary consumers </li></ul>
  9. 9. Decomposer <ul><li>Break down and consume dead organisms </li></ul><ul><li>Everything that is not eaten by a consumer is eventually eaten by decomposers </li></ul>
  10. 10. PRODUCERS PRIMARY CONSUMERS SECONDARY CONSUMERS THIRD-LEVEL CONSUMERS Planktonic algae Benthic algae Brine Shrimp Brine fly Red-necked phalarope Wilson’s phalarope Eared grebe Caspian tern Snowy plover Coyote California gull
  11. 11. DECOMPOSERS PRODUCERS PRIMARY CONSUMERS SECONDARY CONSUMERS THIRD-LEVEL CONSUMERS Planktonic algae Benthic algae Brine Shrimp Brine fly Red-necked phalarope Wilson’s phalarope Eared grebe Caspian tern Snowy plover Coyote California gull
  12. 12. Reflection page 32 <ul><li>What if the brine shrimp no longer existed at Mono Lake? Predict what would happen to the producers, consumers and decomposers in the ecosystem. </li></ul>

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