Trophic Pyramids

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Trophic Pyramids

  1. 1. Trophic pyramids Key terms: Producer/Autotroph Consumer / Heterotroph Trophic level Detritivores Omnivores May 29, 2009
  2. 2. 1. 4. 3. 2. Trophic levels are Available energy decreases
  3. 3. human Leaf Badger Blackbird Fish Caterpillar Grass Hawk Worm
  4. 4. 1. Autotrophs 4. Top carnivores 3. Carnivores 2. Herbivores Trophic levels are the feeding levels of the organisms in each component Available energy decreases with level The width of each bar is proportional to the amount of energy stored (biomass)
  5. 5. 1. Autotrophs (producers) 4. Top carnivores (omnivores) 3. Carnivores (secondary consumer) 2. Herbivores (primary consumer) Trophic levels are the feeding levels of the organisms in each component Available energy decreases with level Detritivores are consumers that operate at all trophic levels
  6. 6. Tasks <ul><li>Read the photocopy and diagrams </li></ul><ul><li>Highlight </li></ul><ul><li>Make notes up to ‘Material cycling’ </li></ul>

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