1. Principles of Ecology
Chapter 2.1

2. Biotic & Abiotic Factors
Living organisms
Abiotic =
Nonliving
Soil,Air,Water
Substrate

3. Population:
Number of Individuals
Same Species
In an area or place

4. Community All the Plants & Animals In a given area
? Community of Del Mar

5. Forest Community …………..

6. Ecosystem: Both biotic and abiotic factors in a large area:

7. Niche versus habitat Habitat = Place Niche = Role
Producer, Consumer or Decomposer
Adaptations

8. Niche overlap? Do not overlap Competition eventually is harmful
Specialized adaptation wins out

9. Organism Interrelationships:
Beneficial
Symbiosis=
Living together
Commensalism=
Only one benefits
Mutualism=
Both benefit
Harmful:
Parasitism=
One benefits &
Host slowly harmed

10. Tape worm Parasite:
You are harmed because it lives off your intestinal fluids
Segments break off to form a new worm!

11. Lichen=Fungus + algae Fungi = carbon dioxide moisture Algae = food
Oxygen
MUTUAL SYMBIOSIS