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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.
Blue-green algae, also known as Cyanobacteria, are a group of photosynthetic bacteria that many people refer to as "pond scum." Blue-green algae are most often blue-green in color, but can also be blue, green, reddish-purple, or brown.
Most algae are microscopic and serve as the main supply of "high energy" food for larger organisms like zooplankton, which in turn are eaten by small fish.
Small fish are then eaten by larger fish, and both small and large fish are eaten by mammals, raptors, and people.
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.
Most species are buoyant and will float to the surface, where they form scum layers or floating mats.