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The nutrient enrichment (usually by nitrates and phosphates) of an aquatic ecosystem, such that the productivity of the system ceases to be limited by the availability of nutrients. An increase in photosynthetic activity is often followed by a depletion of dissolved oxygen as plants die and are decomposed by aerobic organisms. Deoxygenation has an adverse effect on the aquatic animal life.

Subjects: Biological Sciences — Environmental Science.

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