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This Concept Map has information related to: Mississippi Impairment, Logging History which potentially altered Biological Oxygen Demand, Poorly understood so we first need to determine Origin of Problem, Mississippi River Headwaters Dissolved Oxygen Impairment in the context of Local Geological (Glacial) History, Biological Oxygen Demand resulting in Seasonal Dissolved Oxygen Deficit, Total Phosphorus Discharge consequences for Lakes Irving & Bemidji, Climate shapes Flow Regime, Local Geological (Glacial) History driven by Climate, 75 kilograms of phosphorus per day!!!!! when Mississippi DO Levels are low, Seasonal Dissolved Oxygen Deficit which certainly increases Total Phosphorus Discharge, Local Geological (Glacial) History which constrains Flow Regime
