Abstract Title

Phosphorus Release In Lake Fernan

Disciplines

Biology | Chemistry

Abstract

Algal blooms caused by eutrophication in Fernan Lake, Idaho, present a problem for both the surrounding community and the ecosystem within the lake. Microbes that thrive during these blooms often include cyanobacteria, which, in high concentrations, can be dangerous to humans and to organisms in the lake. Understanding the reason for the changing trophic level is critical to the health and safety of the lake environment and its surrounding inhabitants. Phosphorus concentrations are of particular interest, as an increase in phosphorus is positively correlated to the amount of cyanobacteria in the lake. The purpose of this research study is to determine whether the Fernan Lake wetlands, located at the East end of the lake, are a source or a sink for this element. HydroLab DS-5X probes are used to monitor the change in dissolved oxygen over several weeks to identify if significant amounts of phosphorus are released from insoluble compounds during anoxic periods. Water samples taken during anoxia are analyzed using total phosphorus methods.

Comments

Poster #W7

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Phosphorus Release In Lake Fernan

Algal blooms caused by eutrophication in Fernan Lake, Idaho, present a problem for both the surrounding community and the ecosystem within the lake. Microbes that thrive during these blooms often include cyanobacteria, which, in high concentrations, can be dangerous to humans and to organisms in the lake. Understanding the reason for the changing trophic level is critical to the health and safety of the lake environment and its surrounding inhabitants. Phosphorus concentrations are of particular interest, as an increase in phosphorus is positively correlated to the amount of cyanobacteria in the lake. The purpose of this research study is to determine whether the Fernan Lake wetlands, located at the East end of the lake, are a source or a sink for this element. HydroLab DS-5X probes are used to monitor the change in dissolved oxygen over several weeks to identify if significant amounts of phosphorus are released from insoluble compounds during anoxic periods. Water samples taken during anoxia are analyzed using total phosphorus methods.