A small neighborhood pond averaging about 3 meters in depth reveals all the signs of cultural eutrophication,most likely from runoff of lawn fertilizers used by the residents.The water is very cloudy and oxygen levels remain very low,resulting in few fish that can survive.To provide some opportunities for the neighborhood kids to regularly catch fish,the neighborhood association decides to purchase,install,and run a large water fountain in the middle of the pond.
-Instead of addressing the symptoms of cultural eutrophication,the neighborhood association could address the cause of the problem by

Question

Quizplus · Accepted Answer

Reducing the use of lawn fertilizers is the best option as it addresses the cause of the problem, which is the runoff of fertilizers into the pond. Treating the pond with copper sulfate or draining it every few years may temporarily address the symptoms of eutrophication but will not solve the underlying issue. Aerating the pond can help increase oxygen levels, but it will not address the root cause of the problem.

A Small Neighborhood Pond Averaging About 3 Meters in Depth