North Temperate Lakes Long Term Ecological Research studies the ecology of lakes as one of a network of sites established by the National Science Foundation. We are interested in how biophysical setting, climate, and changing land use and cover interact to shape lake characteristics and dynamics over time (past, present, future).
Our primary study sites include a set of seven northern Wisconsin and four southern Wisconsin lakes and their surrounding landscapes. The project, which started in 1981, is administered by the Center for Limnology at the University of Wisconsin-Madison.
In aquatic ecosystems, phytoplankton biomass may remain about constant while concentrations of the limiting nutrient are below detection. It has been thought that mixing events that add nutrients to the mixed layer may cause episodic algal blooms in eutrophic lakes. Another explanation may be that rapid rates of biotic recycling among primary producers and heterotrophic consumers could maintain high phytoplankton biomass. The recycling process has been difficult to observe because release and subsequent uptake may occur over a very short time scal ....
This material is based upon work supported by the National Science Foundation under Cooperative Agreement #DEB-0822700, NTL LTER. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.