1. 10-2 NOTES: ENERGY TRANSFER PP 366-369

2. In an ecosystem energy flows: Sun  autotrophs  heterotrophs producers consumers

3. PRODUCERS/AUTOTROPHS Can make their own food through photosynthesis or chemosynthesis

4. PRODUCERS/AUTOTROPHS Productivity: energy made by producers (after biological processes) available to consumers

5. MEASURING PRODUCTIVITY Gross primary productivity (GPP): rate at which producers capture energy in organic compounds

6. MEASURING PRODUCTIVITY Net primary productivity (NPP): the rate at which biomass accumulates (after some is used) NPP= GPP – Cellular Respiration

7. Biomass: the amount of organic (living) material produced MEASURING PRODUCTIVITY

8. CONSUMERS Get energy by eating other organisms (5 types)

9. CONSUMERS Get energy by eating other organisms Herbivores: eat producers

10. CONSUMERS Herbivores: eat producers Carnivores: eat other consumers

11. CONSUMERS Herbivores: eat producers Carnivores: eat other consumers Omnivores: eat producers and consumers

12. CONSUMERS Detritivores: feed on “garbage” or dead organic matter (ex. Worms, vultures)

13. CONSUMERS Decomposer: break down dead organic matter into simpler molecules  Recycle nutrients back into ecosystem!

14. CLASS WORK Consumer 4-Squares