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OLS Field Name OLS Field Data
Main Title Assessing a Ten-Fold Increase in the Chesapeake Bay Native Oyster Population. A Report to the EPA Chesapeake Bay Program.
Author Cerco, C. F. ; Noel, M. R. ;
CORP Author Army Engineer Waterways Experiment Station, Vicksburg, MS. Engineer Research and Development Center.;Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program.
Publisher Jul 2005
Year Published 2005
Stock Number PB2005-109321
Additional Subjects Chesapeake Bay ; Oysters ; Environmental benefits ; Aquatic vegetation ; Models ; Conservation ; Restoration ;
Holdings
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Status
NTIS  PB2005-109321 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 07/12/2006
Collation 86p
Abstract
The Chesapeake Bay Environmental Model Package (CBEMP) was used to assess the environmental benefits of a ten-fold increase in native oysters in Chesapeake Bay. The CBEMP consists of a coupled system of models including a three-dimensional hydrodynamic model, a three-dimensional eutrophication model, and a sediment diagenesis model. The existing CBEMP benthos submodel was modified to specifically represent the Virginia oyster, Crassostrea virginica. The ten-fold oyster restoration is computed to increase summer-average, bottom, dissolved oxygen in the deep waters of the bay. Summer-average system-wide surface chlorophyll declines by 1 mg m-3. Filtration of phytoplankton from the water column produces net removal of nitrogen through sediment denitrification and sediment retention. A significant benefit of oyster restoration is enhancement of submerged aquatic vegetation. Calculated summer-average biomass improves by 25% for a ten-fold increase in oyster biomass. Oyster restoration is most beneficial in shallow regions with limited exchange rather than in regions of great depth, large volume and spatial extent.