1. Agenda 9/13 Agenda Turn in: Owl Pellet Lab Homework
Primary and secondary productivity review
Primary productivity lab
Secondary productivity lab
Turn in: Owl Pellet Lab Homework
Ecology Math Set
Primary Productivity Practice FRQ

2. Warm Up: Write a paragraph that summarizes primary productivity and secondary productivity. Explain how you would calculate each.

3. Secondary Productivity:
Primary Productivity
Producers that get energy from the sun
The amount of energy that will be passed on to the next level: Net
Gross: total amount of light energy converted into chemical energy
Rate (something/time)
Secondary Productivity:
Amount of energy passed from producers to consumers
Net/Gross

4. Energy Dynamics Lab Objective
To investigate the net primary productivity of mung beans and the net secondary productivity of pill bugs

5. What contributes to the mass of the plant?
CO2 +H20 (sunlight) O2 +C6H12O6

6. Part 1: Mung Beans
The mung beans were massed and determined to have an average mass of g
They were sprouted and allowed to grow for 7 days
The wet and dry mass was collected
Why is this important?

7. Part 1: Mung Beans
1. Write a detailed procedure of how you would determine the net productivity of the mung bean plant
Include any information (constants) you would need
Include specific calculations you would perform to get your final answer

8. Constants Calories in Mung Bean: 4.5 kcal/13 g
Calories in Mung Bean Plant: 4.35 kcal/ 1g

9. Part 2: Pill Bugs
Using pill bugs and potatoes you will now determine the secondary productivity of pill bugs in different environments
2. Write a detailed procedure of how you would determine the secondary productivity
Explain what constants or information you will need
Explain any calculations you will make to get your final answer

10. Secondary Productivity Data
Pill Bugs Day 1
Pill Bugs Day 2
Potato Day 1 Dry
Potato Day 2
0.38 g
0.90 g
2.084 g
2.001 g
Calories in Potato:
77 calories/100 grams

11. Productivity Review
Primary: Indirectly measure by determining the change in biomass of plants for a specific amount of time
Dry biomass (why?)
Secondary: Indirectly measure by determining the amount of chemical energy in food is converted to new biomass in a given amount of time

12. Complete Lab Summary Questions
Posted on website, answer on a separate sheet of paper and attached to your calculations.