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Tuesday 4/17 *only people who need make up work during tutorial today

Tuesday 4/17 *only people who need make up work during tutorial today. What is ecology? Give an example of something studied in ecology. Agenda: whiteboards! Notes D: Short video. Whiteboard reminders. Only write answers to questions Please return markers Paper towels in trash

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Tuesday 4/17 *only people who need make up work during tutorial today

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  1. Tuesday 4/17*only people who need make up work during tutorial today • What is ecology? • Give an example of something studied in ecology. • Agenda: • whiteboards! • Notes D: • Short video

  2. Whiteboard reminders • Only write answers to questions • Please return markers • Paper towels in trash • All group members should contribute!

  3. Whiteboard Questions • Give an example of a primary and secondary consumer. • What is the difference between omnivore, herbivore, and carnivore? • What is the difference between producer and decomposer? Give examples of each. • What is a niche? Give an example. • Draw an ecological food pyramid • Give an example of a food chain • Draw an ecological food web • What would happen to an ecosystem if there were no predators? • Define “carrying capacity.” • What is an ecosystem? Give three examples. *Bonus: Do you know anything about the carbon or nitrogen cycle?

  4. Ecology

  5. Video Questions 1. Where does the energy that powers life begin? 2. What breaks down the last remaining “bits” of energy?

  6. http://www.youtube.com/watch?v=o_RBHfjZsUQ

  7. Video Questions 1. Where does the energy that powers life begin? 2. What breaks down the last remaining “bits” of energy?

  8. Ecology: interaction between organisms and their environment

  9. Food Chain • Represents feeding relationships within an ecosystem (habitat). Ex. Ocean ecosystem: plankton  fish  crab  seal  shark (arrow points to the eater)

  10. Producers get energy from the sunlight • Sunlight is primary energy source • autotrophs: “self feeding” grass leaves algae Plankton

  11. Primary consumers eat producers herbivore • Secondary consumers • eat primary consumers • (carnivores) • Tertiary consumers • eat secondary consumers. • Quaternary consumers eat tertiary consumers. etc

  12. Each food chain ends with a top predator- an animal with no natural enemies

  13. When any organism dies, its eventually eaten by scavengers called: - detrivores (like vultures, worms and crabs) and broken down by -decomposers (mostly bacteria and fungi) The exchange of energy continues.

  14. These are called trophic levels Food Pyramids

  15. Energy • In a food web or pyramid, energy is lost • each time one organism eats another • So there have to be more producers than there are consumers

  16. http://www.youtube.com/watch?v=uxVMeLWzB_o

  17. Lets make our own food pyramid!

  18. A food web is another way to represent feeding relationships.

  19. Niche • A term describing the relational position of a species or population in its ecosystem to each other. (how a species responds to its abundance in resources and enemies) • The role and location of an organism • Desert scavenger • Vulture • Ocean top predator http://www.youtube.com/watch?v=D1aRSeT-mQE

  20. Community, population…. • Carrying capacity

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