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Trophic Levels in Ecosystems

Learn about trophic levels, the roles of producers, consumers, and decomposers, ecological pyramids, and the difference between food chains and webs. This assessment guide reviews and assesses understanding of trophic levels and organism roles in ecosystems.

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Trophic Levels in Ecosystems

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  1. Description: Goals: • Describe the concept of the trophic levels. • Identify the roles of producers, consumers, and decomposers. • Define ecological pyramid and explain its relationship to energy in the ecosystem. • Distinguish between food chains and webs. Brief review of trophic levels thus far and assessment work that can be used as class work, quiz, or informal assessment.

  2. Objectives: Day 5 Review trophic levels and organism roles found on the pyramid. Assessour understanding of Trophic Levels this far.

  3. Warm - Up Q = Explain what the “Trophic Pyramid” is used for. A = It shows the flow of energy and nutrients through the ecosystem based no the type of organism niches.

  4. 6 Kingdoms • Eubacteria • Archaebacteria • Fungi • Plants • Animals • Protists

  5. Basic Energy Pyramid(Trophic Levels) Secondary Consumers Carnivores Herbivores Primary Consumers Primary Producers Autotrophs

  6. Omnivores Top Consumer Secondary Consumer (Carnivores) Primary Consumers (Herbivores) Primary Producers (Autotrophs) Scavengers Decomposers

  7. Examples • Primary Producer • Trees • Primary Consumer • Buffalo • Secondary Consumer • Hyena • Top Consumer • Tiger • Omnivore • Humans

  8. Examples • Decomposers • Fungi • Bacteria • Scavengers • Vulture • Raccoons

  9. Food Chains • Food Chains = Sequence of energy being transferred from one organism to another. • Trophic Levels = each step of energy transfer

  10. Many Food Chains in each Ecosystem

  11. Review and Assessment Guide This assessment guide will help us understand our level of understanding this far. We have covered the trophic pyramid and its levels and organism roles. Since this is an assessment it is individual work.

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