Here are the key steps outlined in the introduction:
- This lab will determine if the water in U Creek is polluted by using invertebrates as indicators.
- Invertebrates are good indicators of water quality because their presence/absence indicates the ability of the water to sustain life. More invertebrates means better water quality.
- Other indicators of water quality that will be examined include dissolved oxygen, pH, nitrogen, and phosphorus levels. Specific thresholds for each are provided that distinguish healthy vs unhealthy levels.
- Bottom dwelling invertebrates will be collected from U Creek and identified to determine the diversity and number present. This will indicate the quality of the creek water.
So