Full document / COSOC-W-86-002 - the National Sea Grant Library
Full document / COSOC-W-86-002 - the National Sea Grant Library Full document / COSOC-W-86-002 - the National Sea Grant Library
Estuarineand Coastal Management- Tools of the Trade. Proceedingsof theTenthNationalConference of The Coastal Society. October 12-15.1986. New Orleans. LA. Copyright by The Coastal Society 1987. THE CHESAPEAKE BAY PROGRAM'S COMPREHENSIVE MODELING STRATEGY CharlesApp WaterQualityControlSection (3WM12) VS. Environmental Protection Agency Regionin 841 Chestnut Building Philadelphia. PA 19107 Abstract only Since 1950, there hasbeenan increasing trend in the accelerated eutrophication of the ChesapeakeBay. Accompanying the increased eutrophication, there is evidence that the areaof anoxic Baywaters hasalsoexpanded. Inorder toeffectively deal withthe water quality problems of the Bay, State and Federal environmental managen must ultimately find answers to the following key managementissues; 1. Canthe eutrophication andanoxia problems be alleviated through control of phosphorus? or nitrogen? or both? 2. Do both point and nonpoint sources need to be controlled? 3. What levelof controlshouldbe implemented? 4. Where(location) should controls beimplemented first tohavethegreatest impact? 5. Howlongwillit takeandhowmuchwilltheBayimprove oncecontrols areimplemented? The Chesapeake BayProgram hasinitiated acomprehensive modeling strategy inorder to provide a scientific framework within which the management issues can be addressed. The modeling strategy includes the development andapplication of a nonpoint source loading and transport model,a steadystatetwo-dimensional eutrophication model and ultimately a threedimensional eutrophication modelof the Bay andmajortributaries. 545
Estuarine andCoastalManagement - Toolsofthe Trade. Proceedingsof theTenthNationalConference ofThe CoastalSociety. October 12-15.1986. New Orleans,LA. Copyrightby TheCoastalSociety 1987. Introduction RESTORING CHESAPEAKE BAY LIVING RESOURCES Bert S. Brun Senior Staff Specialist VS. Hsh and Wildlife Service Amapolu, MD 21401 Restoring Chesapeake Bay Living Resources Chesapeake Bay's legendary "bounty" has dwindled alarmingly, especially over the last ten to twenty years. This decline has been Judged in large part attributable to nan-related causes, in particular, degraded waters. Accordingly, the last decade has seen a well funded, determined attempt to try to better understand, and then ameliorate, poor water quality in the Bay. This paper presents a methodology which Is Intended to be used to develop realizable goals for both water quality and the key speclos dependent upon it. Resources at Risk A nunber of species in Che troubled Chesapeake Bay ecosystem are typically singled out as experiencing great difficulty. Anadrooous fishes as a group are characterized by the coooon necessity of their young requiring high quality fresh or brackish water. Some of these are highly prized, coaaerctally. The Atlantic sturgeon, once the mainstay of early Chesapeake area colonists Cslong with oysters), has been a rarity for some tine, but other species, perhaps hardier, have been more abundant until recently. The striped bass fishery has become so troubled as to warrant a current complete harvesting ban In Maryland and a partial one in Virginia. American shad, affected by river dams as well as poor water quality, are also harvest banned, in Maryland. Another important snadromous fish, the forage species rivor herring, is also down in numbers. 547
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- Page 199 and 200: REFERENCES Morrison, M.D. and M.K.
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Estuarineand Coastal Management- Tools of <strong>the</strong><br />
Trade. Proceedingsof <strong>the</strong>Tenth<strong>National</strong>Conference<br />
of The Coastal Society. October 12-15.19<strong>86</strong>. New<br />
Orleans. LA. Copyright by The Coastal Society<br />
1987.<br />
THE CHESAPEAKE BAY PROGRAM'S<br />
COMPREHENSIVE MODELING STRATEGY<br />
CharlesApp<br />
WaterQualityControlSection (3WM12)<br />
VS. Environmental Protection Agency Regionin<br />
841 Chestnut Building<br />
Philadelphia. PA 19107<br />
Abstract only<br />
Since 1950, <strong>the</strong>re hasbeenan increasing trend in <strong>the</strong> accelerated eutrophication of <strong>the</strong><br />
ChesapeakeBay. Accompanying <strong>the</strong> increased eutrophication, <strong>the</strong>re is evidence that <strong>the</strong> areaof<br />
anoxic Baywaters hasalsoexpanded. Inorder toeffectively deal with<strong>the</strong> water quality problems<br />
of <strong>the</strong> Bay, State and Federal environmental managen must ultimately find answers to <strong>the</strong><br />
following key managementissues;<br />
1. Can<strong>the</strong> eutrophication andanoxia problems be alleviated through control of phosphorus? or<br />
nitrogen? or both?<br />
2. Do both point and nonpoint sources need to be controlled?<br />
3. What levelof controlshouldbe implemented?<br />
4. Where(location) should controls beimplemented first tohave<strong>the</strong>greatest impact?<br />
5. Howlongwillit takeandhowmuchwill<strong>the</strong>Bayimprove oncecontrols areimplemented?<br />
The Chesapeake BayProgram hasinitiated acomprehensive modeling strategy inorder to<br />
provide a scientific framework within which <strong>the</strong> management issues can be addressed. The<br />
modeling strategy includes <strong>the</strong> development andapplication of a nonpoint source loading and<br />
transport model,a steadystatetwo-dimensional eutrophication model and ultimately a threedimensional<br />
eutrophication modelof <strong>the</strong> Bay andmajortributaries.<br />
545
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