Blue-Green Algae

blue green algae vs Muck (NOAA)
Blue-green algae is the lake and in a glass

Blue-green algae (BGA) are cyanobacteria, microscopic organisms that can photosynthesize. They are found in the summer plankton of many lakes. When conditions are favorable, the number of BGA can increase dramatically, or “bloom.” These blooms may be visible as a floating scum that resembles paint on the surface of the water. 

Warm, calm water with elevated nutrients (primarily phosphorus) make algae grow faster than normal, contributing to algae blooms. As long as nutrients are in excess, algae can grow until some other factor, often light or temperature, limits their growth. Some of the sources of phosphorus that promote BGA blooms are from fertilizer runoff, decomposing vegetation, soil erosion, and septic tank leaching. 


In addition to potential toxins (which have no known antidotes), BGA can have many other negative affects.

Information on Blue-Green Algae


Treating Blue-Green Algae on Mona Lake

Mona Lake aAriel

Public Health Notice Concerning Blue-Green Algae

Toxic Algae
blue green algae vs Muck (NOAA)
Blue Green Algae Muskegon Chronicle
algae in lake michigan
Harmful Algal Blooms Michigan Sea Grant
climate Change and Harmful Algal Blooms (USEPA)