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While the water quality of many prairie lakes is monitored and the extent of the eutrophication—and associated negative consequences—generally understood, information on the specific nutrient sources and in-lake processes is often insufficient to identify specific management options.

This study sought to conduct a water and nutrient mass balance, identifying the variance and relative importance of different nutrient sources and internal lake processes for a lake that could be used as a general model for other prairie lakes. As with many other shallow prairie lakes, the eutrophication of Pelican Lake has become increasingly pronounced over recent years.