1. 1 Energy Flow Through an Ecosystem Food Chains, Food Webs, Energy Pyramids

2. 2 6CO 2 + 6H 2 O  C6H 12 O 6 + 6O 2 Photosynthesis Chemical reaction where green plants use water & carbon dioxide to store the sun’s energy as glucose

3. 3 Organisms that can make glucose during photosynthesis are called Organisms that can make glucose during photosynthesis are called PRODUCERS or AUTOTROPHS.

4. 4 The energy that is not used by producers can be passed on to organisms that cannot make their own energy.

5. 5 Organisms that cannot make their own energy are called CONSUMERS or HETEROTROPHS.

6. 6 The chemical reaction that releases the energy in glucose. 6O 2 + C 6 H 12 O 6 --> 6H 2 O + 6CO 2 CELLULAR RESPIRATION

7. 7 Consumers that eat producers herbivores herbivores – plant eaters primary consumers first order (1 st ) or primary consumers

8. Secondary or 2nd order consumer May be a carnivore or omnivore May be a predator May be a predator May be a scavenger Consumers that Eat other Consumers

9. 9 Consumer that eat consumers that already ate a consumer: Tertiary or 3rd order consumer Tertiary or 3rd order consumer May be a carnivore or omnivore May be a predator May be a predator May be a scavenger

10. 10 These levels of organization are called TROPHIC Levels

11. 11 Producers collect energy from the sun and store as starch Most of the energy the primary consumer gets from the producer is used by the consumer Where does the energy go?

12. 12 Some of the energy moves into the atmosphere as heat. Some energy in the primary consumer is STORED or used by the consumer itself This energy is available for another consumer

13. 13 Secondary consumer gets energy from the primary consumer, most is used Where does the energy go? Some of the energy is lost as heat Some energy is stored and can passed on to another consumer.

14. 14 The transfer of energy from the sun to producer to primary consumer then to higher order consumers can be shown in a FOOD CHAIN. Where does the energy go? The arrow shows the direction of transfer of energy

15. 15 Food Chains Show Available Energy Only 10% of available energy is passed to next trophic level

16. 16 Energy Pyramids Amount of available energy decreases for higher consumers It takes a large number of producers to support a small number of primary consumers It takes a large number of primary consumers to support a small number of secondary consumers

17. 17 More Food Chains

18. 18 Food Webs: Are interconnected food chains Are interconnected food chains They show the feeding relationships in an ecosystem They show the feeding relationships in an ecosystem

19. 19 How Many Chains are in this web?

20. 20 Identify the Producers, Consumers, & Decomposers: Count the Food Chains!

21. 21 Open the Green Biology Text book to Pg 86 Read about the different levels of the rain forest Create one data table that includes one of the following from each level of the forest 1 abiotic factors 1 producer 1 consumer 1 symbiotic relationship – you must explain the type of symbiosis