1. Warm Up: List all of the components of this ecosystem…

2. https://www.youtube.com/watch?v=v6ubvEJ3KG M

3. Learning Goals and Activities Compare and contrast biotic and abiotic factors in an ecosystem Explain where organisms get their energy Track energy as it flows throughout an ecosystem PowerPoint Videos Homework: Work on notes and homework packet

4. Ecosystem: all of the organisms living together with their physical environment ECOSYSTEMS: Everything is Connected

6. Components of an Ecosystem In order to survive, ecosystems need 5 components: 1. Energy 2. Mineral nutrients 3. Water 4. Oxygen 5. Living Organisms

7. Biotic and Abiotic Factors BioticAbiotic Living and once-living Nonliving

8. Energy Flow in Ecosystems What is the ultimate source of energy for almost all organisms?

9. Life Depends on the Sun Photosynthesis: the process by which plants, algae and bacteria use sunlight, carbon dioxide and water to produce carbohydrates and oxygen. 6CO ₂ + 6H ₂ 0 + solar energy C ₆ H ₁₂ O ₆ + 6O ₂

11. From Producers to Consumers SunlightPlantsRabbitsCoyote Producer (autotroph): organism that makes its own food. Consumer (heterotrophs): organisms that get their energy by eating other organisms.

12. Consumers Primary, Secondary and Tertiary Consumers

13. Decomposers and Scavengers Break down dead organisms and returns nutrients to soil, water and air. Example: Fungi and Bacteria Scavengers - prevent spread of diseases

14. Vultures TED Talks The significance of scavengers... http://www.ted.com/talks/munir_virani_ why_i_love_vultures.html http://www.ted.com/talks/munir_virani_ why_i_love_vultures.html

15. Food Chains and Food Webs Food chains: sequence in which energy is transferred from one organism to the next as each organism eats another organism. Food web: shows many feeding relationships that are possible in an ecosystem.

16. Food Chains

17. Food Webs Producers? Primary consumers? Secondary consumers? Tertiary consumers?

18. 18 Identify 1 st, 2 nd, 3 rd and 4 th level consumers in this food web.

19. What type of ecosystems does not receive their energy from the sun? http://www.montereyinstitute.org/noaa/lesson05.html

20. Deep-Ocean Ecosystems Chemosynthesis: Bacteria use hydrogen sulfide from hydrothermal vents to make their food. Other underwater organisms eat this bacteria.

21. Exit Ticket Why might the abundance of life at hydrothermal vents support the idea that there is life beyond Earth?

22. Trophic Levels and Energy Transfer

23. 23 Identify 1 st, 2 nd, 3 rd and 4 th level consumers in this food web.

24. Trophic Levels Each step in the transfer of energy through a food web in an ecosystem is a trophic level.

25. Trophic Levels Each time energy is transferred, some of the energy is lost as heat and less is available to organisms at the next tropic level.

26. 10% Rule 90% of energy is used for everyday function i.e.: body temp., movement 10% is stored and then transferred to the consumer.

27. 100% 10% 1% 0.1%

28. 10% rule in action 1 lb of VULTURE 10 lbs of HUMAN 100 lbs of COW 1000 lbs of GRASS 10%

29. 10% rule in action What trophic level should the bulk of the biomass be in an ecosystem? Producers Example- The Savanna of Africa 100 km 2 of grasses (10 km x 10 km) Herd of 1000 wildebeests Pride of 15 lions The higher up the food chain, the less available energy  less top-level consumers 4 th or 5 th level consumers are rare in nature

30. 10% Rule https://www.youtube.com/watch?v=ScizkxMlEOM