1. Ecosystem Components and Interactions

2. Ecosystem Components
Biotic factors:
Abiotic factors:

3. Ecosystem Components Biotic factors: Abiotic factors:
Living components
Examples: Plants, animals, fungi, bacteria
Abiotic factors:
Non-living components
Examples: Rocks, water, air temperature, nutrients

4. Ecosystem Components Habitat Area where an organism lives
Example: The African Savannah

5. Ecosystem Components Niche
ALL of the physical and biological conditions the organism needs
The way the organism interacts with and uses its habitat

6. Community Interactions
1. Competition:
Occurs when organisms attempt to use the same resources in the same place at the same time
Only occurs when resources are limited!

7. Community Interactions
2. Predation:
Occurs when one organism captures and eats another.

8. Community Interactions
3. Symbiosis:
Relationship in which two species live closely together and directly interact.
Four types…Can be good or bad…

9. Types of Symbiosis A. Mutualism: Type of symbiosis
Both species benefit
Examples:
Cleaner fish + sharks
Bees and flowers

10. Types of Symbiosis B. Commensalism: Type of symbiosis
One species benefits, the other is neither helped nor harmed

11. Types of Symbiosis C. Amensalism: Type of symbiosis
One species is harmed, the other is neither helped nor harmed
Example: Mold that produces a substance that kills bacteria but does nothing for the mold

12. Types of Symbiosis D. Parasitism: Type of symbiosis
One species benefits by living in or on another, and the other species is harmed.

13. Because parasites are so interesting!
A human perspective…