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Scholars Day 2005, Wednesday, April 13

Sediment Phosphorus Fluxes During Hypolimnetic Anoxia in Irondequoit Bay, NY

Reduction of external sources of phosphorus, commonly considered the limiting nutrient in algal productivity of freshwater systems, has often been the focus of lake restoration efforts. Despite abatement of external phosphorus source many lakes have been slow to respond to remediation, due to internal sources of phosphorus supplied by the sediments. Our goal in this study was to achieve a better understanding of phosphorus fluxes from the sediments of Irondequoit Bay during periods of hypolimnetic anoxia. In order to better understand phosphorus cycling in the deep-water sediments of Irondequoit Bay, we examined changes several phosphorus fraction within the sediments, through the summer of 2004. We also monitored phosphorus, iron, and manganese concentrations in the water column. Conclusions from this study will aid lake managers in directing their efforts to lower the phosphorus concentrations in the waters of Irondequoit Bay.

Presenter: Daniel White (Graduate Student)
Topic: Environmental Science
Location: 140 Lennon
Time: 9 am (Session I)