What causes blooms? Under specific environmental conditions phytoplankton (microscopic single cell algae) and macroalgae (seaweed visible with the naked eye) may grow rapidly or be physically accumulated by currents in a localized area, leading to a “bloom.” Such blooms may be harmful, with either noxious (odor, appearance, decreased water quality) or even toxic impacts. Excess … Continue reading Causes of Algal Blooms