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GEMET General Multilingual Environmental Thesaurus

eutrophication

Definition

A process of pollution that occurs when a lake or stream becomes over-rich in plant nutrient; as a consequence it becomes overgrown in algae and other aquatic plants. The plants die and decompose. In decomposing the plants rob the water of oxygen and the lake, river or stream becomes lifeless. Nitrate fertilizers which drain from the fields, nutrients from animal wastes and human sewage are the primary causes of eutrophication. They have high biological oxygen demand (BOD). (Source: WRIGHT)

Themes
  • biology
  • pollution
  • water
Groups
  • EFFECTS, IMPACTS
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Scope note

Scope note is not available.

Concept URL: http://www.eionet.europa.eu/gemet/concept/3007