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Go with The Flow! Food Chains, Webs, and Pyramids

Go with The Flow! Food Chains, Webs, and Pyramids. The biologist’s way of tracking the flow of energy in an ecosystem. Most basic: only one group of organisms Arrows show direction of energy flow Helps biologists study individual species Contains:

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Go with The Flow! Food Chains, Webs, and Pyramids

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  1. Go with The Flow!Food Chains, Webs, and Pyramids The biologist’s way of tracking the flow of energy in an ecosystem

  2. Most basic: only one group of organisms • Arrows show direction of energy flow • Helps biologists study individual species • Contains: • Abiotic factors = sun (source of all energy) • Producer = plants (brings energy into ecosystem) • Consumers = things with mouths • Primary consumer – herbivore / omnivore • Secondary consumer – carnivore / omnivore • Tertiary (third) consumer - carnivore Food ChainsWho’s eating who? Abiotic producer primary secondary tertiary energy source consumer consumerconsumer

  3. Combines related food chains from the same ecosystem • More realistic representation of nature • Arrows still show direction of energy flow • Helps biologists study the ecosystem and species interaction Food WebsChoices, choices, choices

  4. Shows the loss of energy as it passes through the different organisms. Only 10% of energy passes on to the next level • Helps biologists study the health of an ecosystem 10% 10% • Bottom = • always producers • most energy • Greatest number of individuals • Top = • final consumer, dominant predator • least energy • Fewest number of individuals 10% Energy PyramidsThe big picture

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