Alliance for the Great Lakes The intervening years saw some contraction, until the appointment of Glenda Daniel as executive director in 1986. During her tenure, the Lake Michigan Federation opened offices in Muskegon, Milwaukee and Green Bay, with its original headquarters remaining in Chicago. With the U.S. and Canada signing a major amendment to the U.S.-Canada Great Lakes Water Quality Agreement in 1987, which among other things allowed for the designation of toxic hotspot "Areas of Concern," the Federation made a significant push to empower local communities in these "AOCs" to seek support for the implementation of cleanups. After Daniel's resignation in 1992, again, the
Great Lakes U.S. side highlight five large municipal systems (those of Detroit, Cleveland, Buffalo, Milwaukee and Gary) as being the largest current periodic sources of untreated discharges into the Great Lakes. Algae such as diatoms, along with other phytoplankton, are photosynthetic primary producers supporting the food web of The Great Lakes. The changes in the size or in the function of the primary producers may have a direct or an indirect impact on the food web. Photosynthesis carried out by diatoms comprises about one fifth of the total photosynthesis. By taking CO2 out of the water, to photosynthesize, diatoms help to stabilize