Publications

Documents 1996 levels of monitoring carried out by Bay jurisdictions for the purpose of tracking forestry Best Management Practices implementation and effectiveness.

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This study recommends the adoption of forest landscape policy goals and recommends a variety of specific improvements and additions to existing tax, acquisition, forest management, land use and urban forest programs that would improve the forests for the benefit of the public, landowners, and the environment.

This report summaries the key findings shared at a conference held in November 1999 and provides a set of recommendation targeted at various sectors of society that can influence public policy aimed at mitigating the negative aspects of forest fragmentation.

A series of refinements were added to a previously-completed three-dimensional eutrophication model of Chesapeake Bay. Refinements included increased grid resolution in the western tributaries and in shallow littoral areas, extension of the grid onto the continental shelf, extension of the validation period to 1985-1994, and addition of living resources. Computations of zooplankton, submerged aquatic vegetation, and benthos compared successfully with observations aggregated over annual time scales and at spatial scales on the order of 100 km2.

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A comprehensive overview of the geology and waters of the Chesapeake Bay and its habitats, biological communities and living resources. The Living Natural Bay/Ecosystems, Watersheds, Environmental Stewardship and Sustainability of the Bay/Stewardship

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The consumate purpose of the Chesapeake Bay restoration and Protection Program is to improve and protect the water quality and living resources of the Chesapeake Bay estuarine system to restore and maintain the Bay's ecological integrity, productivity and beneficial uses and to protect public health.

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The Chesapeake Bay Environmental Model Package is a combination of interactive models. The Community Multi-Scale Air Quality Model and a set of regression models compute daily atmospheric nitrogen and phosphorus loads to the Chesapeake Bay watershed and to the water surface. The Watershed Model (WSM) provides daily computations of flow, solids loads, and nutrient loads at the heads of major tributaries and along the shoreline below the tributary inputs. Flows from the WSM are one set of inputs to the CH3D (Computational Hydrodynamics in Three Dimensions) hydrodynamic model. CH3D computes surface level, three-dimensional velocities, and vertical diffusion on a time scale measured in minutes. Loads from the WSM and transport processes from CH3D drive the CE-QUAL-ICM (Corps of Engineers Integrated Compartment Water Quality Model) eutrophication model. ICM computes, in three dimensions, physical properties, algal production, and elements of the aquatic carbon, nitrogen, phosphorus, silica, and oxygen cycles.

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Carl F. Cerco, Lewis Linker, Jeffrey Sweeney, Gary Shenk, and Arthur J. Butt, 2002. "Nutrient and Solids Controls in Virginia’s Chesapeake Bay Tributaries" Journal of Water Resources Planning and Management, Vol. 128, Issue 3. https://doi.org/10.1061/(ASCE)0733-9496(2002)128:3(179).

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Appendix B documents the water quality calibration of the Phase IV Watershed Model. Simulated and observed concentrations are compared for 8 years of calibration (1984-1991) at 15 water quality stations. Calibration data is shown for temperature, dissolved oxygen, total suspended sediment, total phosphorus, organic and particulate phosphorus, phosphate, total nitrogen, nitrate, total ammonia, and organic nitrogen.

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State and federal agencies have been engaged in restoration and creation of wetlands for many years, generally as part of programs focused on habitat and water quality management. In the late 1990s recognition of the growing cumulative loss of wetland resources, spurred Chesapeake Bay Program partners to make commitments to seek not only no net loss of the resources, but an effective net resource gain. A goal of restoring 25,000 acres of wetlands within the Chesapeake watershed by 2010 was adopted as part of the Chesapeake 2000 agreement. The Scientific and Technical Advisory Committee (STAC) developed this workshop to afford practitioners and interested parties from the Chesapeake Bay Program partners an opportunity to exchange information, discuss emerging ideas, and suggest future directions. The workshop outcomes are presented in this report and grouped into four general areas: 1.) what is currently going on in Chesapeake Bay wetlands restoration; 2.) what the state of the science is to guide wetlands restoration in the Bay; 3.) what has been learned from ongoing efforts to restore wetlands; and 4.) what should happen next in restoration of Chesapeake Bay wetlands.

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