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| Schrieken, N.; Gittenberger, A.; Coolen, J.W.P.; Lengkeek, W.. |
| As most of the sea bottom in the Dutch part of the North Sea consists of sand, marine fauna that live in association with hard substrates are rarely monitored. We report here on the results of a species inventory in June 2011 done by scuba-diving while focusing on a wreck on the Dogger Bank and on rocky bottoms on the Cleaver Bank. This resulted in various new records of species for the Dutch part of the North Sea. This result appeared for a large part linked to the added value of monitoring with scuba-divers. It is therefore concluded that scuba-divers should be used in addition to the more traditional monitoring methods in which dredges and grabs are used, if one aims at getting an accurate view of the biodiversity present in marine regions like the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Biodiversity; Hard substrata; Netherlands; Marine; Scuba-diving; 42.75. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/586863 |
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| Lengkeek, W.; Coolen, J.W.P.; Gittenberger, A.; Schrieken, N.. |
| This paper reports on observations made during wreck dive expeditions in 2010-2012, in order to investigate the ecological relevance of shipwrecks on the Dutch Continental Shelf (dcs). Shipwrecks are biodiversity hotspots. The number of species recorded on shipwrecks is similar to the number of species found in soft bottoms of the entire dcs. The soft substrates, however, represent a vastly larger habitat on the dcs than the shipwrecks. Amongst many other taxa, juvenile and large Atlantic cod, linear skeleton shrimp, goldsinny wrasses and leopard spotted gobies were found in the shipwreck habitats. The presence of these important species and their absence from many other habitats, illustrate that shipwrecks function as key habitats, nurseries, and refugia... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Shipwrecks; Netherlands; Biodiversity; 42.75. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/586861 |
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| Gittenberger, A.; Schrieken, N.; Coolen, J.W.P.; Vlierhuis, W.. |
| During an expedition with scuba-divers to the Dutch part of the Brown Ridge in the central North Sea in June 2013, two colonies of the jewel anemone Corynactis viridis were found on the wreck Anna Graebe. With the jewel anemone both a new species and a new animal order, the Corallimorpharia, are added to the autochthonous fauna of the Netherlands. This species typically occurs in the Mediterranean and along the Atlantic coast from Portugal and the west British Isles up to Shetland. As other records of settled colonies of C. viridis in the North Sea were recently reported from Belgian, German and English waters, it is concluded that the jewel anemone, which used to be known as an occasional visitor, should now be considered autochthonous in the North Sea. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Corallimorpharia; Netherlands; Corynactis viridis; Distribution; 42.75. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/586860 |
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