Blue-green algae appear in ponds and lakes, typically in the summer months. They are similar to other types of algae, accept that they do not play an important role in the food web of an aquatic system. The presence of elevated levels of blue-green algae is typically considered undesirable.
Effects on Aquatic Life
Blue-green algal blooms can reduce light penetration in lakes and ponds, making it difficult for oxygen producing plants to survive. Lower levels of dissolved oxygen in water make it difficult for animal life to thrive.
Taste and Odor Issues
Communities that get their water from open reservoirs often have taste and odor issues associated with blue-green algae. It is important to note this water is safe to drink.
Toxins
Sometimes blue-green algae produces a toxin. There are very few signs regarding whether or not the algae is producing toxins.
Symptoms of Exposure to Toxins
Symptoms of exposure to toxic blue-green algae in people include: headache, fever, vomiting, stomach cramps, muscle weakness and difficulty breathing. If you think you may have been exposed to blue-green algae and have these symptoms, contact your doctor.
Cause of Blooms
The biggest contributor to blue-green algal blooms is nutrient rich agricultural run-off. Taking steps to allowing run-off to reach the water will slowly bring down the level of blue-green algae.
Tags: blue-green algae, blue-green algae, algal blooms