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| Registros recuperados: 1.500 | |
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| Schockaert, E.R.. |
| In this first contribution on Somalian marine microturbellarians, a detailed description of three new species belonging to the family Polycystididae is given. Very few data are available on representatives of this family from the Indo-Pacific area. The available data are from the American Pacific coasts (Marcus, 1954a; Schockaert & Karling, 1970) and from the Antarctic (Karling, 1952). Karling (1952) described the first Polycystidid, <i>Koinocystella inermis</i>, with a copulatory organ of the conjuncta type; Schockaert & Karling (1970) proposed a new subfamily Duplacrorhynchinae to contain the three new species they described. The Somalian samples collected by the author contained three new species with a remarkable anatomy that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kalyptorhynchia Turbellaria [Flatworms] ISW; Somali Dem. Rep.. |
| Ano: 1971 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3434 |
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| Dahms, H.-U.; Schminke, H.K.. |
| Five species of harpacticoid copepods belonging to three families and four genera were collected from various samples of sea ice taken during five cruises of RV Polarstern to the Weddell Sea from 1985-89. One species is new and described, namely <i>Hastigerella antarctica</i> sp. n. <i>Drescheriella racovitzai</i> comb. n. (Griesbrecht, 1902), <i>Harpacticus furcifer</i> Giesbrecht, 1902 and <i>Idomene antarctica</i> (Giesbrecht, 1902) are redescribed. The fourth nauplius of an unknown representative of Ectinosomatidae is described as well as three naupliar stages of <i>Harpacticus furcifer</i>. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1992 |
URL: http://www.vliz.be/imisdocs/publications/303562.pdf |
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| Lanckneus, J.; De Moor, G.; Stolk, A.. |
| The Middelkerke Bank, a tidal sandbank located in the southern North Sea on the Belgian continental platform has been the object of a multidisciplinary and international research project. The morphological and hydrodynamical setting of the study area is presented. A complete side-scan sonar coverage of the bank allowed a detailed analysis of the morphology of the bank and of its superimposed bedforms. Large dunes cover the flanks and summit of the Middelkerke Bank. They have a constant orientation, a height ranging from 0.5 to 5 m, a wavelength from 75 to 150 m and in most cases an asymmetrical profile. The slopes of both lee and stoss flanks are very low. Small and medium dune fields occur on the entire bank and in the adjacent swales. They are 2-D and... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1994 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2620 |
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| Jacobs, P.. |
| The Belgian sector of the Southern Bight of the North Sea stands as a copy-book example of a shallow marine siliciclastic intracratonic sedimentary basin with a ramp type margin setting, characterized by low subsidence rates, relative tectonic quiescence, and a low gradient relief. Clastic sediment supply resulting of erosion by constant southern Alpine uplift, origins from a proto-Rhine-Meuse-Scheldt river drainage system, gradually infilling the basin. The mainly deltaic sedimentation system gives rise to (offshore and onshore) Tertiary onlapping and shallowing upward sedimentary series of metric to decametric thickness with a dip to the NNE of less than 5%.To identify the offshore seismostratigraphical units introduced on basis of 16,000 km of high... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1994 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2601 |
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| Herman, J.; Hovestadt-Euler, M.; Hovestadt, D.C.. |
| With the exception of the unavailable genera <i>Heteroscyllium</i> and <i>Sutorectus</i>, this fascicle comprises the descriptions of microteeth of the genera of the orectolobiform families Brachaeluridae, Ginglymostomatidae, Hemiscylliidae, Orectolobidae, Parascylliidae, Rhiniodontidae, Stegostomatidae, of the pristiophoriform family Pristiophoridae and the squatiniform family Squatinidae. Detailed descriptions of the tooth morphology, and rostral spine morphology for Pristiophoriformes are given, as well as SEM-photographs. The tooth morphology of the genera concerned is compared in order to elucidate the interrelationships within these shark orders also from an odontological point of view. The dental histology for the... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1992 |
URL: http://www.vliz.be/imisdocs/publications/294444.pdf |
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| Lavens, P.; Sorgeloos, P.; Dhert, P.; Devresse, B.. |
| Larval ontogeny in fish is characterized by important anatomical and physiological phases with consequent changes in nutrient requirements. Depending on the size of the larva and the specialization of its digestive system at the initiation of exogenous feeding, live food remains an essential requirement for many marine and some freshwater fish species. This paper reviews the latest developments in the selection, production and/or use of the most commonly used live feeds in larviculture, i.e. micro-algae, rotifers, and brine shrimp.Species-specific dietary requirements are met by application of live food enrichment techniques with selected nutrients. It is very likely that broodstock nutrition and conditioning might influence the nutritional requirements of... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1995 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2577 |
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| Meysman, F.. |
| Within the natural sciences, it has long been recognized that biological activity can modify the texture, structure and composition of surface sediments. Darwin (1881) already examined the stirring of soils by burrowing earthworms and made detailed observations on how these organisms affect soil processes. A similar phenomenon can be observed in aquatic sediments, which are inhabited by a diverse biological community, supported by the flux of organic matter and oxygen from the overlying water column. Surface sediments of oceans, estuaries, lakes and rivers are highly active biogeochemical environments and an effective way to generate insight in the complexity of the interactions is by means of so-called general early diagenetic models (e.g. Soetaert et al,... |
| Tipo: Info:eu-repo/semantics/doctoralThesis |
Palavras-chave: Chemistry; Ecology; Hydrology; Model; Sediment; Water. |
| Ano: 2001 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8063 |
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| Registros recuperados: 1.500 | |
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