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Differential response of macrozoobenthos to marine sand extraction in the North Sea and the western Mediterranean van Dalfsen, J.; Essink, K.; Madsen, H.T.; Birklund, J.; Romero, J.; Manzanera, M. (2000). Differential response of macrozoobenthos to marine sand extraction in the North Sea and the western Mediterranean. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 57(5): 1439-1445. dx.doi.org/10.1006/jmsc.2000.0919 In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139; e-ISSN 1095-9289

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Beschikbaar in	Auteurs
VLIZ: Open access 56242 [ download pdf ]

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Trefwoorden

ANE, North Sea Aquatic communities > Benthos Aquatic communities > Benthos > Zoobenthos Dredging MED, Western Mediterranean Recovery Mediterranean [Marine Regions]; Mediterranean Sea - Western Basin [Marine Regions]; Noordzee [Marine Regions] Marien/Kust

Author keywords

benthic community; macrozoobenthos; Mediterranean; North Sea; recovery; sand extraction

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Auteurs		Top
van Dalfsen, J. Essink, K. Madsen, H.T.	Birklund, J. Romero, J. Manzanera, M.

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Abstract

Sublittoral benthic coastal communities of the North Sea and of the Western Mediterranean were studied before and after sand extraction between 1993 and 1995 at borrow sites in Denmark, The Netherlands, and Spain. Recolonization of disturbed areas was fast owing to the rapid increase of opportunistic species. At the North Sea sites, the benthic community largely recovered within 2–4 years, whereas in Spain recovery is expected to take longer. The response of zoobenthos to sand extraction is discussed, taking into account differences in site characteristics, extraction methods, and recovery time of the habitats. The effects on the benthic community appear to be related to the physical impact on the sea floor. Small-scale disturbances in seabed morphology and sediment composition result in short-term effects on the benthic community. However, larger disturbances mainly caused by sediment composition may have a prolonged effect, particularly in low dynamic systems such as those present in the Mediterranean.

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