Sediment characteristics of a restored saltmarsh and mudflat in a managed realignment scheme in Southeast England |
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| Authors: | Margaret Kadiri Kate L Spencer Catherine M Heppell Paul Fletcher |
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| Institution: | (1) Department of Geography, Queen Mary, University of London, London, UK;(2) School of Biological and Chemical Sciences, Queen Mary, University of London, London, UK |
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| Abstract: | Sediment characteristics and vegetation composition were measured in a restored and natural saltmarsh and mudflat at Wallasea
Island managed realignment scheme (Essex, UK) from January to December 2007. The similar sediment characteristics in the restored
and natural mudflat indicated that the sediment in the restored mudflat was approaching natural conditions. However, the sediment
characteristics in the restored saltmarsh were not becoming similar to those in the natural saltmarsh. The sediment moisture
content, organic matter content and porosity were lower while the sediment bulk density, salinity and pH were higher in the
restored compared to the natural saltmarsh. The dissimilarities were mainly due to differences in the vegetation abundance
and organic matter content. Although, 18 months after restoration the restored saltmarsh was only sparsely vegetated and there
was no net change in the sediment characteristics, the occurrence of Salicornia europaea L. demonstrated that pioneer saltmarsh vegetation establishment preceded the development of sediment characteristics. |
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