1. IV. Ecosystem Ecology
A. Energy Flow
1. Food chains
2. Productiion
a. gross primary productivity
b. net primary productivity
3. Consumption
a. ecological efficiency
4. Decomposition
5. Trophic pyramids
6. What determines productivity

2. Rocky intertidal community

3. Simplified food web of a rocky intertidal community
Pisaster (sea star)
Thais
(snail)
Chitons
2 sp
Limpets
2 sp
Bivalves
(Mussels)
Acorn
Barnacles
3 sp
Goosenecked
Barnacles
1 sp

5. Disturbance

6. Fig
Succession on glacial moraines

8. Fig

9. Primary producer = plants (and other photosynthetic
organisms)

10. Primary consumer = herbivore
(things that eat producers)

11. Tertiary consumer = carnivore
(animals that eat secondary consumers)

12. Omnivore = animal that eats from several trophic levels

13. Fig. 54.1

14. Detritovore = organisms that eat non-living organic matter

15. 6CO2 + 6H2O + Energy C6H12O6 + 6O2 NPP = GPP - Respiration Respiration
Photosynthesis
NPP = GPP - Respiration

16. Fig

17. Fig

18. Fig

19. Fig

20. Fig. 54.3