The University of Wisconsin's world-renown Center for Limnology operates the North Temperate Lakes Long-Term Ecological Research program, emphasizing long-term ecological phenomena in urban, agricultural, and forested watersheds. This information-rich site offers general and detailed information on the North Temperate Lakes LTER's impressive array of projects. Research projects encompass several themes, including long-term trends in physical, chemical, and biological properties of lake ecosystems; the dynamics of internal and external processes affecting lake ecosystems; the temporal responses of lake ecosystems to disturbance and stress; the interaction between spatial heterogeneity and temporal variability of lake ecosystems; and lake-ecosystem properties in a broad regional context. Also of interest are descriptions of lake properties, a searchable bibliography, biodiversity and species lists, and more than a dozen online datasets ranging from Aquatic Macrophytes through Zooplankton. A query-able climate data section and Links to Other Sites of Interest round out the site.