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Registros recuperados: 37 | |
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Belgrano, A.; Vincx, M.; Dewarumez, J.-M.; Richard, A.; Craeymeersch, J.A.; Heip, C.H.R.. |
The density distribution of meroplanktonic larvae is compared with the density distribution of adults in the benthos, at five coastal stations in the Southern Bight of the North Sea (<i>Abra alba</i> community). Plankton communities were sampled during one tidal cycle, along a buoy traject or at a fixed point; southern and northern locations, 250 m from each central sampling point, have been investigated too. Benthos samples were taken only at the central points of this traject. Meroplankton consisted of polychaete larvae (9 families) and bivalve and echinoderm larvae. The highest density values of these larvae (6,400 ind.10.25 m<sup>2</sup>) are found on the southern sites of each traject (closest to the coastline). The highest... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Meiobenthos Meroplankton Recruitment ANE; North Sea; Southern Bight. |
Ano: 1990 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7114 |
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Joiris, C.R.; Holsbeek, L.; Bossicart, M.; Tapia, G.. |
Four sperm whales (three subadult males stranded on the Belgian coast, a fourth older male found dead at sea) were analysed for total mercury, methylmercury and organochlorines. All four were part of a total of 24 sperm whales that stranded on the North Sea coasts over a period of six months, a highly unusual phenomenon. Total mercury levels ranged from 0.5 µg/g fw in kidney and 1 in muscle, up to 15 in liver. The finding of at least 90% of the mercury in its inorganic form confirms the existence of detoxification mechanisms in the liver of cetaceans. PCB concentrations in muscle, liver, kidney and blubber ranged from 10 to 25 µg/g lipids. These results are in the same order of magnitude as literature data, which however does not imply that there is no... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Detoxification Mercury Social behaviour Stranding ANE; Belgium ANE; North Sea; Southern Bight. |
Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=837 |
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Jauniaux, T.; Brosens, L.; Jacquinet, E.; Lambrigts, D.; Coignoul, F.. |
On November 18, 1994, four sperm whales were discovered dead on the Belgian coast, and on January 12, 1995, three live sperm whales stranded on the Dutch coast. Necropsies were conducted following a standardized procedure and samples were collected. Two Belgian sperm whales had a severe weight deficit and the Dutch sperm whales had reductions in blubber thickness. Agonal lesions such as visceral passive congestion and lung edema were due to the stranding. Significant lesions included acute ulcerations of the skin and acute to subacute ulcerative stomatitis. Severe diffuse subacute to chronic ulcerative external otitis was noted in four animals. Progressive weakness and/or potential alterations of echolocation might have predisposed these sperm whales to... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marine pollution Migration Migration Migration Migrations Pathology Pollution Populations Populations Stranding Whaling ANE; Belgium ANE; Netherlands ANE; North Sea; Southern Bight. |
Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=832 |
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Pichot, G.; Runfola, Y.. |
The nitrogen cycle between dissolved inorganic and organic matter, phytoplankton, zooplankton, non living particulate organic matter, and sediments is studied in the ecosystem formed by the Southern Bight of the North Sea. A consistent pattern of mean annual fluxes of nitrogen based on the primary production and the zooplankton grazing is set up. A mathematical model describing the dynamic behaviour of nutrients, phytoplankton, zooplankton and dissolved organic matter is proposed. The results of the simulation fairly well fit the recent observations made in the frame of the Math. Model Sea Research Programme. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ANE; North Sea; Southern Bight. |
Ano: 1976 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3535 |
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Huys, R.; Coomans, A.. |
Echinoderes higginsi sp.n. is described from shallow subtidal sand north of the mouth of the Westerscheldt estuary, The Netherlands. The species is compared with other species having the same spine formulac. It appears to be most closely related to E. kristenseni Higgins. 1983 and, to a lesscr extent. to E. riedli Higgins, 1966. Condyldres multispinosus (McIntyre. 1962) is reported from the same locality, the first report of this centroderid kinorhynch since the original description. Some additional information on E. levunderi Karling, 1954 is presented. The presence of lateroventral adhesive tubes on the fourth segment, lateral spines on segment 7 and small additional setae on segment 12 in the male is noted. Echinoderes canariensis Greeff, 1869 and E.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: New species ANE; Netherlands; Westerschelde ANE; North Sea; Southern Bight. |
Ano: 1989 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7083 |
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Registros recuperados: 37 | |
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