water eutrophication and its effects

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Polluted lake shows the devastating impact of ecological damage, water contamination from wastewater Royalty Free Stock Photo

Toxic blue green algae bloom close up Royalty Free Stock Photo

Eutrophication is the process by which all or parts of a body of water become progressively saturated with minerals and nutrients, especially nitrogen and phosphorus. It has also been defined as "a nutrient-induced increase in phytoplankton productivity". Eutrophication can affect freshwater or saltwater systems. In freshwater ecosystems, it is almost always caused by excess phosphorus.