Print Email Facebook Twitter Benthic Habitat Variations Over Tidal Ridges, North Sea, The Netherlands Title Benthic Habitat Variations Over Tidal Ridges, North Sea, The Netherlands Author van Dijk, T.A.G.P. van Dalfsen, J.A. van Lancker, V. van Overmeeren, R.A. van Heteren, S. Doornenbal, P.J. Publication year 2012 Abstract Marine ecosystems on continental shelves endure an increasing burden of human activity offshore, and the impacts on benthic habitats are not well known. An improved understanding of how benthic habitats vary in relation to substrate types and seabed features is therefore essential to both scientists and offshore developers. This case study shows that marine habitats over two tidal ridges in the North Sea vary from low-density/low-diversity communities on the well-sorted sandy crests of ridges to high-density/high-diversity communities in the poorly sorted muddy, gravelly sediments in the adjacent troughs. On sandy continental shelves, including the Netherlands Continental Shelf (NCS) in the North Sea, tidal bedforms occur of different spatial scales, such as sand banks (tidal ridges), sand waves, and megaripples. Marine habitat maps reveal that benthic habitats vary spatially on continental shelves in relation to seabed morphology, water depth, and sediment composition. The different morphological elements of tidal ridges are expected to accommodate different benthic habitats. Some tidal ridge areas in the North Sea are nominated to become marine protected areas, but are also attractive for their marine aggregates and may be designated in part as mining areas. Due to their composition and shallow water depths, tidal ridges are also suitable locations for the construction of offshore wind farms. To date, the characteristics of relatively inaccessible seabeds are too poorly understood to explain the effects of physical parameters on benthic communities. Therefore, it is important to expand our understanding of benthic habitat variations associated with tidal ridges, for the benefit of both science and offshore development. © 2012 Elsevier Inc. All rights reserved. Subject Earth & EnvironmentGM - GeomodellingEELS - Earth, Environmental and Life SciencesGeological Survey NetherlandsGeosciencesEnergy / Geological Survey NetherlandsBenthic habitatNetherlands Continental ShelfNorth SeaOpen marine ecosystemsSand wavesSeabed morphologyTidal ridgesTidal sand banks To reference this document use: http://resolver.tudelft.nl/uuid:ffe2d879-a856-47a1-8659-31e503659759 DOI https://doi.org/10.1016/b978-0-12-385140-6.00013-x TNO identifier 480180 Publisher Elsevier Inc. ISBN 9780123851406 Source Seafloor Geomorphology as Benthic Habitat, 241-249 Document type bookPart Files To receive the publication files, please send an e-mail request to TNO Library.