What are Harmful Cyanobacterial Blooms?

Harmful cyanobacterial blooms are caused by a sudden intensification of the cyanobacterial population in water bodies, often in response to man-made pollution. They cause a major disturbance to aquatic ecosystems due to the anoxic conditions created under the thick layer of cyanobacterial “scum” and to the accumulation of toxins produced by cyanobacteria under bloom conditions. Cyanotoxins accumulate in drinking water as well as in the aquatic food chain and pose an immediate risk to humans as well as to animals that depend on these resources. Cyanobacterial blooms have become an annually recurring major concern throughout the world, with no effective control measures available to-date.