Protecting natural landforms and habitats by nourishing an eroding estuarine beach

摘要: An important issue facing coastal managers is how natural habitats can be protected against wave erosion by human action. assessment made of attempts to protect a rare maritime forest on the bay side barrier island at Fire Island, New York, USA using artificial beach fill. The sediment deficit caused stabilize restricting inlet formation, overwash, and dune migration, it exacerbated nearby marina bulkhead. A total 1099 m3 sand dredged from navigation channel was placed near Loss fill 5.54–7.87 m−1 in first 6 months. gone 18 months after placement. Sediment moving out area almost 4 m shoreline advance 40 downdrift (gain 3.28 m−1), followed retreat about 5 that location over next 12 (loss 5.51 m−1). These results reveal small changes volume microtidal estuarine beaches cause great displacement rates. amount maintenance dredging insufficient replenish losses. Placing additional bayside create washover fans mimic landforms overcome loss inputs stabilizing ocean shore. Mechanical placement may preferable processes, which would deliver across through pre-existing stable habitat, eliminating some features take long form.