We have chosen two topics that are often in the news for our first issue, but welcome your ideas for future publications. In fact, algae in lakes may consist of hundreds of species that form the base of the food chain. Beneficial' algae include green algae and diatoms, which provide excellent food for other organisms and are rarely abundant enough to cause aesthetic problems. Cyanobacteria can reach very high densities and form 'blooms' in the summer. When these blooms die, they sink to the lake bottom and decompose.
Decomposition uses up oxygen and can cause fish kills.
Unfortunately, treatments to control cyanobacteria tend to kill other algae as well. It is important to use caution when considering your options to control nuisance algae. Keep in mind also that aquatic weed growth may be kept in check by that shading layer of algae. Because E . Instead, it indicates that there is sewage contaminating the water supply.