Eutrophication: 20 Questions

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What is Eutrophication?

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Eutrophication is the process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae.

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What causes Eutrophication?

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Eutrophication is caused by excess nutrients, particularly nitrogen and phosphorus, building up in the water.

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What happens to light levels in water during Eutrophication?

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When algae levels increase, they cut off light to plants at the bottom of the water body.

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What is the immediate effect of fertilizers entering a river?

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The immediate effect is the fast growth of plants, particularly algae.

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How does Eutrophication affect dissolved oxygen levels?

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Dissolved oxygen levels decrease because decomposers use it in cellular respiration.

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What is an algal bloom?

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An algal bloom is a rapid increase in the population of algae in water, often due to excess nutrients.

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What are dead zones?

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Dead zones are areas in water bodies where oxygen levels are so low that most marine life cannot survive.

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What role do decomposers play in Eutrophication?

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Decomposers break down dead organic matter, consuming oxygen in the process, which can lead to lower oxygen levels.

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What is the impact of Eutrophication on fish populations?

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Eutrophication can lead to fish kills due to low oxygen levels caused by decomposers and algal blooms.

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What is the relationship between Eutrophication and water pollution?

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Eutrophication is often a result of water pollution, particularly from agricultural runoff containing fertilizers.