Eutrophication & Succession

Front

What is eutrophication?

Back

Eutrophication is the process by which a body of water becomes overly enriched with nutrients, leading to excessive growth of algae and depletion of oxygen.

Front

What causes the sudden increase in algae growth in a lake?

Back

The sudden increase in algae growth is caused by an excess of nutrients, often from fertilizers or runoff.

Front

What happens to algae when they die in a eutrophic lake?

Back

When algae die, they decompose, which consumes oxygen in the water, leading to low oxygen levels.

Front

What is a dead zone in aquatic environments?

Back

A dead zone is an area in a body of water where oxygen levels are so low that most marine life cannot survive.

Front

How does thick algae growth affect photosynthesis in a lake?

Back

Thick layers of algae block light from reaching underwater plants, inhibiting their ability to perform photosynthesis.

Front

What is the role of oxygen in aquatic ecosystems?

Back

Oxygen is essential for the survival of most aquatic organisms, including fish and invertebrates.

Front

What is succession in ecological terms?

Back

Succession is the gradual process of change in the species structure of an ecological community over time.

Front

What are the two main types of succession?

Back

The two main types of succession are primary succession (starting from bare rock) and secondary succession (following a disturbance).

Front

What is the significance of nutrient levels in water bodies?

Back

Nutrient levels are crucial as they determine the productivity of aquatic ecosystems; too many nutrients can lead to eutrophication.

Front

What is the impact of fertilizers on lakes?

Back

Fertilizers can lead to nutrient runoff into lakes, causing eutrophication and harmful algal blooms.