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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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one publication added to basket [114984]

Benthic re-colonization in post-dredging pits in the Puck Bay (Southern Baltic Sea) Szymelfenig, M.; Kotwicki, L.; Graca, B. (2006). Benthic re-colonization in post-dredging pits in the Puck Bay (Southern Baltic Sea). Est., Coast. and Shelf Sci. 68(3-4): 489-498. http://dx.doi.org/10.1016/j.ecss.2006.02.018 In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 261162 [ download pdf ]

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Trefwoorden

Aquatic communities > Benthos > Meiobenthos ANE, Baltic [Marine Regions]; ANE, Poland, Puck Bay [Marine Regions] Marien/Kust

Author keywords

post-dredging pit; re-colonization; meiobenthos; macrozoobenthos; PuckBay; Baltic Sea

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Auteurs		Top
Szymelfenig, M. Kotwicki, L., meer Graca, B.

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Abstract

The stage of benthic re-colonization at a site formed by sand extraction was investigated some 10 years after the cessation of dredging. The examined post-dredging pit is one of five deep (up to 14 m) pits created with a static suction hopper on the sandy, flat and shallow (1-2 m) part of the inner Puck Bay (the southern Baltic Sea). The topography of the dredged area makes a specific trap for different kinds of organic matter. It is created by the small areas of post-dredging pits as compared to their depths. As a result, organic matter accumulation leads to anaerobic conditions and hydrogen sulfide formation. Macrofauna was not found to occur permanently in the deepest part (11 m) of the cup-shaped depression, which was characterized by its small area (0.2 km2) and steep walls. However, permanent occurrence of meiofauna (max. 180 ind. 10 cm-2, mainly Nematoda) was noted. Undoubtedly, re-colonization of benthic fauna assemblages, typical of shallow and sandy seabed of the Puck Bay, will not follow in a natural way in the area of post-dredging pits. Also, it could not be expected that the re-colonization sequence would result in the formation of a structure similar to that of the natural depression (the Kuznica Hollow).

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