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Energy Flow in Ecosystems

Energy Flow in Ecosystems . show the path of energy through trophic (feeding) levels Energy come from the Energy is not recycled – it decreases and is “lost” (made unavailable in the form of heat) . Food chains:. Undergo photosynthesis (plants, algae, some bacteria)

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Energy Flow in Ecosystems

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  1. Energy Flow in Ecosystems

  2. show the path of energy through trophic (feeding) levels Energy come from the Energy is not recycled – it decreases and is “lost” (made unavailable in the form of heat) Food chains:

  3. Undergo photosynthesis (plants, algae, some bacteria) Use energy from the sun to make food (glucose) Level 1 - Producers

  4. Level 2 - Primary (1) Consumers • Herbivores – eat plants

  5. Level 3 – Secondary (2) Consumers • Carnivores – eat meat • Omnivores – eat both meat and plants Pygmy Margay Golden Headed Lion Tamarin

  6. Detritivores - obtain energy from dead organisms at all trophic levels • Decomposers – cause decay • Bacteria, fungi, worms • Rabbit • Scavengers – feed on the remains of dead organisms • snails, crabs, worms, raccoons, maggots, vultures, hyenas • Gecko

  7. Review

  8. Producer Fourth order (quaternary) consumer Second order (secondary) consumer First order (primary) consumer Third order (tertiary) consumer PRACTICE!!!

  9. Food Web vs. Food Chain • What is the difference between a food chain and a food web?

  10. Energy flow through ecosystems can be represented using a pyramid - why? • 10% of the energy at each level is passed on to the next level, 90% is used by heat and metabolism. • Energy decreases as you move through trophic levels! • It takes a lot of vegetation to support higher trophic levels.

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