Water fleas of the genus Daphnia can be found in most ponds and streams. They feed upon microscopic particles of organic matter and are in turn food for fish and other aquatic organisms. Daphnia Toxicity is a measure of a substance’s toxicity when consumed by these water fleas. A common measuring tool for Daphnia Toxicity is EC50 (“effective concentration”), which is the concentration of a substance in the water required to immobilize 50 percent of the test animals. If EC50 < 10 mg/liter, the substance is named Daphnia Toxic.
Source: MBDC
Category: Green