||System-Wide Submerged Aquatic Vegetation Model for the Chesapeake Bay.
C. F. Cerco ;
||Army Engineer Waterways Experiment Station, Vicksburg, MS. Engineer Research and Development Center.; Virginia Inst. of Marine Science, Gloucester Point.; Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program.
Eutrophication models ;
Biomass models ;
Spatial distribution ;
Graphs (Charts) ;
Tables (Data) ;
Submerged aquatic vegetation (SAV) ;
Chesapeake Bay ;
Computed light attenuation
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A predictive model of submerged aquatic vegetation (SAV) biomass is coupled to a eutrophication model of Chesapeake Bay. Domain of the model includes the mainstem of the bay as well as tidal portions of major embayments and tributaries. Three SAV communities are modeled: ZOSTERA, RUPPIA, and FRESHWATER. The model successfully computes the spatial distribution and abundance of SAV for the period 1985-1994. Spatial distribution is primarily determined by computed light attenuation. Sensitivity analysis to reductions in nutrient and solids loads indicates nutrient controls will enhance abundance primarily in areas that presently support SAV. Restoration of SAV to areas in which it does not presently exist requires solids controls, alone or in combination with nutrient controls.