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Dissolved Oxygen and Aquatic Primary Productivity
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Introduction
Key Concepts
Concept 1: Dissolved Oxygen Availability
Concept 2: Ideal Conditions for Maximum Dissolved Oxygen
Concept 3: Primary Productivity
Concept 4: Measuring Primary Productivity
Design of the Experiment
A Model of Productivity as a Function of Depth in a Lake
Closer Look: A Model of Productivity - Initial
Closer Look: A Model of Productivity - Dark
Closer Look: A Model of Productivity - Light
Measuring Dissolved Oxygen Under Varying Light Conditions
Analysis of Results
Sample Problem
Lab Quiz
Ideal Conditions for Maximum Dissolved Oxygen
1. Which environment has the greater concentration of dissolved oxygen: salt water or fresh water?
2. Which environment has the greater concentration of dissolved oxygen: warm water (31°C) or cool water (18°C)?
3. Which environment has the greater concentration of dissolved oxygen: a clear pond or a pond with a heavy algal mat? Explain.

Before we learn how to measure dissolved oxygen, let's consider the concept of primary productivity.

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