Protecting natural landforms and habitats by nourishing an eroding estuarine beach
Protecting natural landforms and habitats by nourishing an eroding estuarine beach
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通过滋养侵蚀的河口海滩来保护自然地貌和栖息地
DOI：
10.1007/s12665-018-7826-3
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发表时间：
2018
影响因子：
2.8
通讯作者：
Garilao, Emir S.
中科院分区：
文献类型：
--
作者：
Nordstrom, Karl F.;Jackson, Nancy L.;Rader, Alana M.;Garilao, Emir S.
An important issue facing coastal managers is how natural coastal habitats can be protected against wave erosion by human action. An assessment is made of attempts to protect a rare maritime forest on the bay side of a barrier island at Fire Island, New York, USA using artificial beach fill. The sediment deficit is caused by human attempts to stabilize the island by restricting inlet formation, overwash, and dune migration, and it is exacerbated by a nearby marina bulkhead. A total of 1099 m3of sand dredged from the navigation channel was placed near the bulkhead. Loss of fill was 5.54–7.87 m3m−1in the first 6 months. The fill was gone 18 months after placement. Sediment moving out of the fill area caused almost 4 m of shoreline advance 40 m downdrift after 6 months (gain of 3.28 m3m−1), followed by retreat of about 5 m at that location over the next 12 months (loss of 5.51 m3m−1). These results reveal how small changes in volume of microtidal estuarine beaches can cause great shoreline displacement rates. The amount of fill from maintenance dredging is insufficient to replenish erosion losses. Placing additional fill sediment on the bayside to create artificial washover fans can mimic natural landforms and overcome loss of sediment inputs caused by stabilizing the ocean shore. Mechanical placement may be preferable to natural processes, which would deliver sediment across the island and through pre-existing stable habitat, eliminating some of the features that take long to form.
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DOI：
10.1016/j.scitotenv.2014.04.046
发表时间：
2014
期刊：
The Science of the total environment
影响因子：
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DOI：
10.1142/9789812701916_0279
发表时间：
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期刊：
The Geographical Journal
影响因子：
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影响因子：
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