Microbial Ecology & Eco Systems

Algal Blooms

An algal bloom, also called an "algae bloom" in AP style, is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and is recognized by the discoloration in the water from their pigments.

Bright green blooms in freshwater systems are frequently a result of cyanobacteria (colloquially known as blue-green algae) such as Microcystis. Blooms may also consist of macroalgal (non-phytoplanktonic) species. These blooms are recognizable by large blades of algae that may wash up onto the shoreline.