Dating sediment layers
This breakdown process requires oxygen and can create a biological oxygen demand.Increases in biological oxygen demand result in decreases in oxygen concentration in the water, and this can adversely affect fish and other aquatic life, and can even result in fish kills.Here in Wisconsin, most of the state relies on groundwater, rather than surface water, for drinking water.When a blue-green algae bloom dies off, the blue-green algae cells sink and are broken down by microbes.related to exposure to blue-green algae (e.g., stomach cramps, diarrhea, vomiting, headache, fever, muscle weakness, difficulty breathing), contact your doctor or the Poison Information Hotline (800-222-1222) right away.such as seizures, vomiting, or diarrhea after contact with surface water, contact your veterinarian right away.In lakes where Cylindro has been detected, blooms typically occur any time between late July and late September.
If you are (or your local community is) interested in collecting samples for analysis, please contact the Wisconsin State Laboratory of Hygiene at (800)442-4618.
Discolored water is an aesthetic issue, but when blue-green algae reach bloom densities, they can actually reduce light penetration, which can adversely affect other aquatic organisms both directly (e.g., other phytoplankton and aquatic plants) and indirectly (e.g., zooplankton and fish that depend on phytoplankton and plants).
Blue-green algae blooms can be quite smelly, and though it is recommended that people never drink raw water, blue-green algae have been known to affect the taste of drinking water that comes from surface waters experiencing a bloom.
Many different species of blue-green algae occur in Wisconsin waters, but the most commonly detected include sp.
It is not always the same species that blooms in a given waterbody, and the dominant species present can change over the course of the season.
Blue-green algae generally grow in lakes, ponds, and slow-moving streams when the water is warm and enriched with nutrients like phosphorus or nitrogen.