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Characterization and differentiation of sublittoral sandbanks in the southeastern North Sea
Beermann, J.; Gutow, L.; Wührdemann, S.; Konijnenberg, R.; Heinicke, K.; Bildstein, T.; Jaklin, S.; Gusky, M.; Zettler, M.L.; Dannheim, J.; Pesch, R. (2023). Characterization and differentiation of sublittoral sandbanks in the southeastern North Sea. Biodivers. Conserv. 32(8-9): 2747-2768. https://dx.doi.org/10.1007/s10531-023-02629-4
In: Biodiversity and Conservation. Kluwer Academic Publishers/Springer: London. ISSN 0960-3115; e-ISSN 1572-9710
|   |
| Trefwoorden |
Echinocardium cordatum (Pennant, 1777) [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Beermann, J.
- Gutow, L.
- Wührdemann, S.
- Konijnenberg, R.
|
- Heinicke, K.
- Bildstein, T.
- Jaklin, S.
- Gusky, M.
|
- Zettler, M.L.
- Dannheim, J.
- Pesch, R.
|
| Abstract |
Marine sublittoral sandbanks are essential offshore feeding grounds for larger crustaceans, fish and seabirds. In the southern North Sea, sandbanks are characterized by considerable natural sediment dynamics and are subject to chronic bottom trawling. However, except for the Dogger Bank, sandbanks in the southeastern North Sea have been only poorly investigated until now. We used an extensive, multi-annual dataset covering ongoing national monitoring programmes, environmental impact assessments, and basic research studies to analyse benthic communities on sublittoral sandbanks, evaluating their ecological value against the backdrop of similar seafloor habitats in this region. The analysis revealed complex spatial structuring of sandy seafloor habitats of the southeastern North Sea. Different infauna clusters were identified and could be specified by their composition of characteristic species. The sandbanks shared common structural features in their infauna community composition although they were not necessarily characterized by particularly high biodiversity compared to other sandy habitats. A close association of one of the main bioturbators in the southern North Sea, the sea urchin Echinocardium cordatum, with sandbanks was detected, which may promote the sediment-bound biogeochemical activity in this particular seafloor habitat. This would corroborate the status of sandbanks as sites of high ecological value calling for consideration in marine conservation. |
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