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Ongoing GLEON Project: Importance of the timing of spring runoff to summer production in lakes

Allison Hrycik, Jason Stockwell (University of Vermont), Lars Rudstam and other GLEON collaborators

The research question tested in this project is “changes in the timing of spring runoff, specifically more runoff occurring in the winter and early spring, will lead to reduced productivity and phytoplankton biomass during the summer stratified period”. Data sets have been assembled, including one from Oneida Lake. We expect the above might be true because nutrients delivered to a lake during colder deeply mixed and possibly ice covered conditions could be less effective at stimulating phytoplankton growth. Results were presented at the GLEON meeting in Canada in November 2019 and a manuscript is expected in 2020 to complete this project next year.