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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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The effects of shoreface nourishments on Spisula and scoters in The Netherlands Baptist, M.J.; Leopold, M.F. (2009). The effects of shoreface nourishments on Spisula and scoters in The Netherlands. Mar. Environ. Res. 68(1): 1-11. http://dx.doi.org/10.1016/j.marenvres.2009.03.003 In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 258778 [ aanvragen ]

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Trefwoorden

Abundance Accretion > Beach accretion > Beach nourishment Aquatic communities > Benthos Aquatic organisms > Marine organisms > Aquatic birds > Marine birds Biological settlement Coastal zone Distribution > Geographical distribution Population dynamics Protection > Environmental protection > Coastal zone management > Shore protection Sediments Topographic features > Landforms > Coastal landforms > Beaches Bivalvia [WoRMS]; Melanitta nigra (Linnaeus, 1758) [WoRMS]; Spisula subtruncata (da Costa, 1778) [WoRMS] Marien/Kust

Author keywords

Shoreface nourishment; Spisula subtruncata; Melanitta nigra; North Sea;Seabirds; Benthos; Sediments

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Auteurs		Top
Baptist, M.J., meer Leopold, M.F., meer

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Abstract

The coast of The Netherlands is protected by nourishing sand. Generally, two different techniques are used, beach nourishment and shoreface nourishment. The latter technique supplies sand at a water depth of about 5–8 m in the surf zone, and has been used on a regular basis since 1997 with increasing volumes since 2001. Observations on the bivalve mollusc Spisula subtruncata that was abundant before 1997 and a key food species for wintering seaduck show a decline since 2001. This coincided with a decrease in the abundance of the Common Scoter Melanitta nigra, the most numerous wintering seaduck off the Dutch coast. These observations raised concern about shoreface nourishments. This study analyses the timing and locations of shoreface nourishments in combination with S. subtruncata abundance and spatial distribution. Against the expectation, no causal relationship was found between the decline of S. subtruncata and shoreface nourishments. Other causes, such as climate change, fisheries, unsuccessful settlement or predation of spatfall are more likely behind the decline of Spisula along the Dutch coast.

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