Eutrophication is described as the natural aging process of a water body, when chemical nutrients, typically compounds containing nitrogen and phosphorus start to overwhelm it. This happens naturally but is accelerated by manmade activities and events. As nutrients start to take over, the water body starts to favor plant life over animal life.
Plant life can vary, but there are types of nuisance algae that are very common in eutrophic water bodies. Not all algae are bad. Diatoms are a very beneficial form of algae and have the benefit of keeping other nuisance forms of algae in check. Generally there are 3 types of nuisance algae that are most common: