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Full document / COSOC-W-86-002 - the National Sea Grant Library

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Estuarine andCoastal Management-Tools of<strong>the</strong> Abstract only<br />

Trade. Proceedingsof <strong>the</strong> Tenth<strong>National</strong>Conference<br />

of TheCoastalSociety. October12-15.19<strong>86</strong>. New<br />

Orleans.LA. Copyrightby TheCoastalSociety<br />

1987.<br />

MANAGING COASTAL DUNES<br />

NorbertP.Psuty<br />

Rutgers University<br />

Center for Coastal and EnvironmenuJ Studies<br />

New Brunswick. NJ 08903<br />

Dune Management is often recognized as a component of shoreline management.<br />

There is a concept (albeit mistaken)thatdune stabilityproducesshorelinestability.<br />

Sediment budget studies in conjunction with shoreline process-response models lead to <strong>the</strong><br />

conclusionthat coastaldunes are <strong>the</strong> productof a retreatingerosionalshorelineand that<br />

imposedstability is antagonisticto <strong>the</strong> developmentand functioningof <strong>the</strong> dune system.<br />

A sediment budget/morphological process-responsemodel is proposed that covers<br />

<strong>the</strong> balancesthat mustbe achievedforcoastaldunedevelopment, equilibrium,and<br />

attenuation. A second version of <strong>the</strong> model incorporates management strategies that can be<br />

effectively applied in <strong>the</strong> several stages of <strong>the</strong> coastal dune model. The conclusion that<br />

coastal dunes are <strong>the</strong> products of a slowly retreating shoreline imposes severe constraints<br />

on <strong>the</strong> temporalapplicationsof activeor passiveprotectionsbageies.<br />

413

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