The term “Cyanobacteria” popped into view when the state twice last summer warned Danforth Pond residents to avoid swimming where they could see blue-green algae scum patches with colored flecks. While cyanobacteria are natural components of water bodies, excess nutrient loads can cause them to trigger toxins harmful to people and pets. Addressing the threat of cyanobacteria will be the subject of a public meeting on Saturday, May 11.