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.
Most research investigating effects of global warming on lake temperature focus on relatively large lakes and neglect to ask whether small lakes show similar responses. Because the majority of lakes in the world are small, the large-lake focus thus may not capture temperature trends representative of the majority of the world’s lakes. To analyze the temperature trends in lakes across Wisconsin, we used the cross-site seasonal Sen’s slope estimator, a non-parametric technique for trend estimation that reduces assumptions made when correcting for seasonality.
This material is based upon work supported by the National Science Foundation under Cooperative Agreement #DEB-1440297, 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.