1. Botany 4 Lecture #36 Ecosystems
What are they?

2. Ecosystem Ecology: Study of all abiotic factors and communities of organisms in an area.
Concerned with energy flow and chemical recycling among biotic and abiotic components.

3. Characteristics of Ecosystems

4. Food Chains

5. Food Chains
How does this differ from the preceding?

6. Food Webs

8. Pyramids of Numbers At each successive trophic level, there is/are:
Less individuals.
Less biomass.
Less energy.

9. Pyramid of Individuals

11. Pyramid of Biomass

12. Pyramid of Biomass????

13. Pyramid of Energy

14. Pyramid Of Energy

16. Where does the energy go????

17. What happens to the Nutrients (Chemicals) in an Ecosystem?
Biogeochemical Cycling – Chemicals cycle between living and non-living forms.

18. Nitrogen Cycle

19. Chemicals (Re)Cycle Between Organic and Inorganic Forms.

20. Carbon Cycling in an Ecosystem

21. The Water Cycle

22. In any Ecosystem, Chemicals Cycle and Energy Passes Through…..