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  • 1
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    Sensitivities of marine macrozoobenthos to environmental pressures in the Netherlands (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 79-111
    Details
    Publication Date: 2024-01-12
    Description: The relative sensitivities of 309 common invertebrate species in Dutch marine waters are presented for environmental and anthropogenic pressures like organic enrichment, sedimentation and fisheries. The species were furthermore appointed to trophic groups like suspension and deposit feeders. The Dutch Ministry of Infrastructure and the\nEnvironment uses these data when calculating the Benthic Ecosystem Quality Index 2 and the Infaunal Trophic Index. These metrics aid in the mandatory monitoring of ecological quality for example for the European Water Framework Directive. The common Dutch species were selected based on their abundance according to, 1. the mwtl dataset including results of on-going monitoring programs issued by the\nMinistry, 2. the monitoring by volunteer scuba-divers for the anemoon Foundation and 3. the monitoring of fouling plates for the project setl.
    Keywords: macrozoobenthos ; marine ; Netherlands ; environment
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    The juwel anemone Corynactis viridis, a new order for the Netherlands (Cnidaria: Corallimorpharia) (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 35-41
    Details
    Publication Date: 2024-01-12
    Description: 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.
    Keywords: Cnidaria ; Corallimorpharia ; Netherlands ; Corynactis viridis ; distribution
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 3
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    First record of a settled stomatopod Platysquilla eusebia in the North Sea (Malacostraca: Stomatopoda) (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 31-34
    Details
    Publication Date: 2024-01-12
    Description: This paper describes the discovery of a settled juvenile specimen of the stomatopod Platysquilla eusebia on the Dutch part of the Dogger Bank in the central North Sea. This is the northernmost record in Europe. The species is native to the Mediterranean and to the Atlantic coast from Portugal up to France. Further investigations have to show if the species already forms populations this far north. As the planktonic stages of P. eusebia have already been recorded in prior years, the establishment of the species should not be a problem, providing the circumstances are favourable.
    Keywords: Malacostraca ; Stomatopoda ; Platysquilla eusebia ; distribution ; Netherlands
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
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    Ecological relevance of shipwrecks in the North Sea (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 49-57
    Details
    Publication Date: 2024-01-12
    Description: 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 that are rare or absent anywhere else in the Netherlands.
    Keywords: shipwrecks ; Netherlands ; biodiversity
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 5
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    Marine fauna of hard substrata of the Cleaver bank and Dogger bank (2013)
    In:  Nederlandse Faunistische Mededelingen vol. 41, pp. 69-78
    Details
    Publication Date: 2024-01-12
    Description: 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\nmonitoring 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 North Sea.
    Keywords: biodiversity ; hard substrata ; Netherlands ; marine ; scuba-diving
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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