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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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Tidal reduction and its effects on intertidal hard-substrate communities in the Oosterschelde estuary Meijer, A.J.M.; Waardenburg, H.W. (1994). Tidal reduction and its effects on intertidal hard-substrate communities in the Oosterschelde estuary. Hydrobiologia 282: 281-298. https://dx.doi.org/10.1007/BF00024636 In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer Is gerelateerd aan: Meijer, A.J.M.; Waardenburg, H.W. (1994). Tidal reduction and its effects on intertidal hard-substrate communities in the Oosterschelde estuary, in: Nienhuis, P.H. et al. The Oosterschelde Estuary (The Netherlands): A case-study of a changing ecosystem. Developments in Hydrobiology, 97: pp. 281-298. https://dx.doi.org/10.1007/978-94-011-1174-4_21, meer

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Trefwoorden

ANE, Nederland, Oosterschelde [Marine Regions] Marien/Kust; Brak water

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Auteurs		Top
Meijer, A.J.M., meer Waardenburg, H.W., meer

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Abstract

Developments of intertidal hard-substrate communities in the Oosterschelde estuary were examined in perpendicular transects between high-water line and low-water line in the period 1982-1992. Prior to the beginning of the Oosterschelde estuary works a typology of communities was established and an overall survey of the estuary was carried out. The communities contain flora (algae) as well as fauna. Due to asphalting of dikes in 1986, much of the surface of several communities has been destroyed. The originally well developed communities with large species-richness have not returned. The small reduction in tidal amplitude due to the construction of the storm-surge barrier had a minor effect on the zonation of communities. In the upper part of the intertidal zone the boundaries of the communities moved 0.5-1.0 m downward in the transects along the dike-slopes. At an average inclination of 18-degrees this means a vertical shift of about 15-30 cm. This reflects the reduction of the tidal amplitude: the high-water line shifted ca 22 cm downward. In a number of places sedimentation has caused a reduction in the number of smaller seaweed species in the lower eulittoral zone. At monitoring locations presence of the original communities is rather unchanged. Rare species like Pelvetia canaliculata, Actinia equina and Gelidium pusillum have been able to maintain quite successfully.

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