Topic and Objective  A defining characteristic of the limnetic ecosystems of North America is the presence of strong short and long-term variation in the relationships linking fish populations to their supporting food webs.  Recent climate change has imposed a consistent temporal trend on this variation which is becoming increasingly evident in the time series from many systems spread across the continent.  This symposium focuses on studies that illustrate how differences in climate, and other environmental factors, shape these population-food web relationships.  Study systems range from walleye and lake trout populations in lakes distributed across North America to cyprinid populations in the Everglades.     

Value of symposium:  A symposium on environmentally driven shifts in the relationships linking fish populations to their supporting  food webs is directly related to the ecological aspects of the theme of the Twin Cities AFS conference: Fisheries Networks: Building Ecological, Social, and Professional Relationships.