1. Part I: Communities and Populations Part II: Energy and Matter
Unit 2: Ecology Review
Part I: Communities and Populations
Part II: Energy and Matter

2. Journal 2-1: Interactions in the World around Us
Levels of organization
Population
Community
Ecosystem
Biome
Biosphere
Biotic factors
Abiotic factors
Types of Interactions

3. Community Ecology Notes
Habitat vs. Niche
Competition
Predator-Prey
Symbiotic interactions
Mutualism
Parasitism
Commensalism
What’s going on here?!

4. Journal 2-2: Fish Kill Mystery
Ecological mysteries involve many interactions
Biotic possibility
Interruption of the food chain
Abiotic possibility
Acid rain directly kills the fish
Biotic-Abiotic combined possibilities
Acid rain interrupts the food chain
Eutrophication
Journal 2-3: Fish Kill Mystery solved
Parasite thrives due to eutrophication and kills fish

5. Lab 2-1: Fish Kill pH Lab pH – scale of acidity
Effect of pH on water organisms
Daphnia and Gammerus require specific environmental conditions to survive

6. Lab 2-2: Exploring Pond Life
Light Microscopes
Observations of organisms that are found in Ponds

7. Population Ecology Notes
Abiotic and Biotic factors effect population growth
Limiting factors
Carrying capacity
S-shaped curve, J-shaped curve

8. Journal 2-4: Mystery on Easter Island
Real world example of Population Ecology
Limiting Factors
Carrying capacity – changes when environments change
Human impact
Biotic - Abiotic interactions
Biotic - Biotic interactions
End of Part I

9. Journal 2-3: Energy Inc. Energy flows through an Ecosystem 10% rule
Sun is the ultimate source of energy in an ecosystem
Food chains
Producers
Primary Consumers
Ect……

10. Food Webs and Ecological Pyramids
Food chain vs. Food Web
Decomposers
Biomass
Types of Ecological Pyramids
Numbers
Energy
Biomagnification

11. Lab 2-3: Owl Pellet Owl feeding interactions Using data to make…
Pyramids of numbers
Pyramids of biomass
Food Webs

12. Energy and Matter in the Ecosystem Notes
The Carbon Cycle
Photosynthesis and Cellular Respiration
Equations
Types of organisms
Connection to…
Matter
Energy
Burning Fossil Fuels

13. Lab 2-4: Photosynthesis in Elodea
Factors that effect photosynthesis
Light color
Light intensity
Amount of CO2
Testing for evidence of photosynthesis
BTB changed color in the presence of CO2

14. Journal 2-6: Releasing Energy
Molecules produced by photosynthesis contain energy
Quick energy release = explosion
Controlled energy release in organisms = cellular respiration

15. Lab 2-5: The Clothespin Olympics and Notes
Exploring aerobic cellular respiration
Protocol B
Makes 38 ATP per glucose
Uses oxygen
Exploring anaerobic lactic acid fermentation
Protocol D
Makes 2 ATP
Does not use oxygen
Muscle fatigue, pain

16. Eutrophication Notes
Process that reduces the health of an aquatic ecosystem
Related to Nitrogen and Phosphorous Cycles

17. Journal 2-7: What have I Learned…..
Putting it all together
Ecological situations are complex and involve several interactions
A small change in an ecosystem can cause many other small changes that add up to big change