1. Introduction to Ecosystems

2. Ecosystem
All of the living and nonliving things in an area that interact for survival.

3. Organism: any living thing

4. Ecosystem

5. Ecosystem

6. Ecosystem

7. Abiotic and Biotic Interactions

8. Abiotic Factors
Bio = “Life” A = “Not” Abiotic = “Not Life” = Nonliving parts

9. Precipitation (Rain or Snow)
Air
Water
Precipitation (Rain or Snow)
Rocks, Soil, Minerals
ABIOTIC
(nonliving)
Factors
Shelter
Weather and Climate
Sunlight
Temperature

10. Biotic Factors PRODUCERS CONSUMERS DECOMPOSERS
Bio = “Life” Biotic = Living parts
PRODUCERS
CONSUMERS
DECOMPOSERS

11. down dead organisms, provide nutrients for producers)
(Food Makers)
DECOMPOSERS
(Break
down dead organisms, provide nutrients for producers)
Biotic
(Living)
Factors
CONSUMERS
(Food Eaters)
Nature Recycles!

12. Interactions in Ecosystems

13. Biotic/Abiotic Interactions
Interact – when one thing has an effect on another thing

14. Biotic/Abiotic Interactions

15. Biotic/Biotic Interactions

16. Biotic/Biotic Interactions

17. ABIOTIC & BIOTIC BIOTIC & BIOTIC Ecosystem Interactions
Organisms using air
(breathing, flying)
Food Chains/Food Webs
(organisms eating each other)
Organisms using other organisms for shelter
(birds living in trees)
Organisms using water
(drinking, swimming)
(Your example 1)
(Your example 1)
(Your example 2)
(Your example 2)
(Your example 3)
(Your example 3)

18. Levels of Organization

19. First Level - Individual
Smallest level – only ONE organism

20. Second Level - Population
ALL of the members of the same species

21. Third Level - Community
ALL of the populations (or, all of the living things)

22. Fourth Level - Ecosystem
ALL of the living things + ALL of the non-living things

23. Levels of Organization

24. Levels of Organization
Individual
(one organism)
Draw your own illustrations for each level!
Population
(all members of 1 species)
Community
(all populations / all living things)
Ecosystem
(all living things + all non-living things)