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Beach nourishment: an ecologically sound coastal defence alternative? A review Speybroeck, J.; Bonte, D.; Courtens, W.; Gheskiere, T.; Grootaert, P.; Maelfait, J.-P.; Mathys, M.; Provoost, S.; Sabbe, K.; Stienen, E.W.M.; Van Lancker, V.R.M.; Vincx, M.; Degraer, S. (2007). Beach nourishment: an ecologically sound coastal defence alternative? A review, in: Speybroeck, J. Ecologie van macrobenthos als een basis voor een ecologische bijsturing van strandsuppleties = Ecology of macrobenthos as a baseline for an ecological adjustment of beach nourishment. pp. 45-63 In: Speybroeck, J. (2007). Ecologie van macrobenthos als een basis voor een ecologische bijsturing van strandsuppleties = Ecology of macrobenthos as a baseline for an ecological adjustment of beach nourishment. PhD Thesis. Universiteit Gent. Vakgroep Biologie, sectie Mariene Biologie: Gent. 189 pp. Is gerelateerd aan: Speybroeck, J.; Bonte, D.; Courtens, W.; Gheskiere, T.; Grootaert, P.; Maelfait, J.-P.; Mathys, M.; Provoost, S.; Sabbe, K.; Stienen, E.W.M.; Van Lancker, V.R.M.; Vincx, M.; Degraer, S. (2006). Beach nourishment: an ecologically sound coastal defence alternative? A review. Aquat. Conserv. 16(4): 419-435. dx.doi.org/10.1002/aqc.733, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 122203 [ download pdf ]

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Trefwoorden

Accretion > Beach accretion > Beach nourishment Ecology Environmental impact Erosion > Coastal erosion Review articles Structures > Hydraulic structures > Coastal structures > Coast defences Topographic features > Landforms > Coastal landforms > Beaches ANE, België [Marine Regions] Marien/Kust

Author keywords

sandy beaches; ecology; beach nourishment; beach replenishment; coastal erosion; coastal defence; ecological impact

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Auteurs		Top
Speybroeck, J. Bonte, D. Courtens, W. Gheskiere, T. Grootaert, P.	Maelfait, J.-P. Mathys, M. Provoost, S. Sabbe, K.	Stienen, E.W.M. Van Lancker, V.R.M. Vincx, M. Degraer, S.

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Abstract

1. Even though beach nourishment is generally considered as an environment-friendly option for coastal protection and beach restoration, sizeable impacts on several beach ecosystem components (microphytobenthos, vascular plants, terrestrial arthropods, marine zoobenthos and avifauna) are described in the literature, as reviewed in this paper. 2. Negative, ecosystem-component specific effects of beach nourishment dominate in the short to medium term, with the size of the impact being determined by (1) activities during the construction phase, (2) the quality and (3) the quantity of the nourishment sand, (4) the timing, place and size of project, and (5) the nourishment technique and strategy applied Over the long term the speed and degree of ecological recovery largely depend on the physical characteristics of the beach habitat, mainly determined by (1) sediment quality and quantity, (2) the nourishment technique and strategy applied, (3) the place and the size of nourishment and (4) the physical environment prior to nourishment 3 The limited information available on indirect and cumulative ecological effects indicates that these effects cannot be neglected in an overall impact assessment. Hence, for ecologically good practice of beach nourishment it is advised (1) to choose nourishment sands with a sediment composition comparable to that of the natural sediment, (2) to avoid short-term compaction by ploughing immediately after construction, (3) to execute the nourishment in a period of low beach use by birds and other mobile organisms, (4) to choose a number of smaller projects rather than a single large nourishment project and (5) to select the nourishment technique with respect to the local natural values.

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