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Does medium-term emersion cause a mass extinction of tidal flat macrobenthos? The case of the Tricolor oil pollution prevention in the Zwin nature reserve (Belgium and The Netherlands) Van Colen, C.; Vincx, M.; Degraer, S. (2009). Does medium-term emersion cause a mass extinction of tidal flat macrobenthos? The case of the Tricolor oil pollution prevention in the Zwin nature reserve (Belgium and The Netherlands), in: Van Colen, C. Tidal flat macrobenthos ecology, recolonisation and succession = Ecologie, herkolonisatie en successie van het macrobenthos in slikken. pp. 229-239 In: Van Colen, C. (2009). Tidal flat macrobenthos ecology, recolonisation and succession = Ecologie, herkolonisatie en successie van het macrobenthos in slikken. PhD Thesis. Universiteit Gent; Faculteit Wetenschappen; Afdeling Mariene Biologie: Gent. ISBN 978-90-902416-6-1. 300 pp., meer Is gerelateerd aan: Van Colen, C.; Vincx, M.; Degraer, S. (2006). Does medium-term emersion cause a mass extinction of tidal flat macrobenthos? The case of the Tricolor oil pollution prevention in the Zwin nature reserve (Belgium and The Netherlands). Est., Coast. and Shelf Sci. 68(1-2): 343-347. https://dx.doi.org/10.1016/j.ecss.2006.02.013, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 272681 [ download pdf ]

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Trefwoorden

Aquatic communities > Benthos Behaviour > Migrations > Immigrations Immersion effects Marine parks Pollution > Oil pollution Population functions > Mortality Topographic features > Landforms > Coastal landforms > Tidal flats Orchestia gammarellus (Pallas, 1766) [WoRMS]; Talitrus saltator (Montagu, 1808) [WoRMS] ANE, België, Zwin [Marine Regions]; ANE, Nederland, Zwin [Marine Regions]; Belgium, Het Zwin natuurreservaat Marien/Kust

Author keywords

tidal flat macrobenthos; Tricolor oil pollution; Zwin nature reserve; emersion; mortality; immigration

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Van Colen, C., meer Vincx, M., meer Degraer, S., meer

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Abstract

As a result of the Tricolor oil pollution in the Southern Bight of the North Sea (winter 2003) the Zwin nature reserve, consisting of tidal flats and salt marshes, was blocked from the North Sea by use of a sand barrier. Hence, macrobenthic tidal flat organisms, by nature strongly dependent on the cyclic incoming seawater, were emersed during a period of 27 days. Because the effect of medium-term emersion on the ecologically important benthic life could not be assessed beforehand, the damming was taken as an opportunity to examine these effects. This study demonstrated that: (1) no species vanished due to emersion, (2) although the emersion might have caused some mortality, a mass mortality within the macrobenthos did not occur, and (3) the supra-littoral amphipods Talitrus saltator and Orchestia gammarellus performed a strong, though ephemeral immigration into the intertidal zone during the period of emersion. In view of both its minor impacts on the macrobenthos and its effectiveness in preventing oil pollution in the Zwin nature reserve, damming as a measure against oil pollution may be considered effective protection, especially during winter.

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