Sol Lisboa, Rebecca Schneider, Lars Rudstam and Todd Walter published a paper on the phosphorus budget of Oneida Lake, and the sources of P into the lake over the summer months. This was based on Lisboa’s PhD work on Oneida Lake. They found that P entering the lake with groundwater seepage contributed around 20% of the increase in P observed in the lake over the summer months, with another 30% entering the lake from the tributaries, and 50% from internal sources associated with internal loading from the sediment. This study shows that groundwater seepage can be a large component of the P budget even in large lakes and adds to the handful number of studies that have quantitatively measured and compared nutrient loading from both streams and groundwater into large lakes. Sol is now an assistant professor at the Department of Civil and Environmental Eng. at the Universidad Tecnica Federico Santa Maria, in Valparaiso, Chile.
Lisboa, MS, RL Schneider, LG Rudstam, MT Walter. 2025. Groundwater phosphorus contributions comparable to tributaries in a large, mesotrophic, polymictic lake. Science of the Total Environment. 1008:180978. doi.org/10.1016/j.scitotenv.2025.180978
