Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the surface of a river, lake, etc., often because chemicals that are used to help crops grow have been carried there by rain. Eutrophication may occur naturally or as a result of human actions. Manmade, or cultural, eutrophication occurs when sewage, industrial wastewater, fertilizer runoff, and other nutrient sources are released into the environment. Such nutrient pollution usually causes algal blooms and bacterial growth, resulting in the depletion of dissolved oxygen in water and causing substantial environmental degradation. Many policies have been introduced to combat eutrophication, including the United Nations Development Program's sustainability development goals.
Definitions
A eutrophic medicine.
(of a body of water) Being rich in nutrients and minerals and therefore having an excessive growth of algae and thus a diminished oxygen content to the detriment of other organisms.
Distinct survival strategies in oligotrophic and eutrophic ecotype Synechococcus -bacteria co-cultures under iron limitation and warming conditions  ASM Journals
Environmental DNA Reveals Multitrophic Insight into the Mechanism of Community Stability Changes in Shallow Eutrophic Lakes  ACS Publications