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Understanding Energy in Ecosystems: Food Chains and Capacity for Action

Explore the flow of energy in ecosystems through food chains and the link between eating and work capacity. Learn about energy roles in food webs and the energy pyramid. Discover how energy moves from producers to consumers.

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Understanding Energy in Ecosystems: Food Chains and Capacity for Action

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Presentation Transcript

  1. What is Energy?

  2. What is Energy? Energy is the capacity for action/doing work

  3. Why do we eat?

  4. Why do we eat? • To have the capacity to carry out functions necessary for living

  5. Why do we eat? • To have the capacity to carry out functions necessary for living • So our bodies are able to work

  6. Why do we eat? • To have the capacity to carry out functions necessary for living • So our bodies are able to work • To obtain energy

  7. How does energy move to our homes?

  8. How does energy move to our homes? • Through a chain/web/network of power lines

  9. How does energy flow through an ecosystem?

  10. How does energy flow through an ecosystem? • Energy flows through food chains or food webs

  11. A. Food Chain

  12. A. Food Chain 1. A series of events in which one organism eats another and obtains energy

  13. B. Food Web

  14. B. Food Web 1. Pattern of overlapping food chains in an ecosystem

  15. B. Food Web 1. Pattern of overlapping food chains in an ecosystem

  16. C. Energy Roles in Food Webs

  17. C. Energy Roles in Food Webs 1. Producers

  18. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food

  19. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers

  20. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms.

  21. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores –

  22. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only

  23. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores

  24. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only

  25. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores

  26. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals

  27. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger

  28. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger – carnivore that feed on bodies of dead organisms

  29. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger – carnivore that feed on bodies of dead organisms 3. Decomposers

  30. C. Energy Roles in Food Webs 1. Producers – An organism that can make its own food 2. Consumers – An organism that obtains food by feeding on other organisms. a. Herbivores – eat plants only b. Carnivores - eat other animals only c. Omnivores – eat plants and animals d. Scavenger – carnivore that feed on bodies of dead organisms 3. Decomposers – break down waste and dead organisms and return raw materials to the ecosystem

  31. D. Energy Pyramid

  32. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web

  33. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web

  34. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web • a. Only about 10% of total energy at each level is passed onto the next level

  35. D. Energy Pyramid • 1. Diagram that shows the amount of energy flowing through a food web • a. Only about 10% of total energy at each level is passed onto the next level • 1. organisms use 90% of the energy they consume to carry out life functions

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