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| Registros recuperados: 174 | |
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| Wolff, W.J.. |
| During the years 1968-1970 a study has been made of the soft-bottom macrofauna (Coelenterata, Mollusca, Echiuroidea, Polychaeta, Archiannelida, Crustacea Malacostraca) of the estuaries of the rivers Rhine, Meuse, and Scheldt in the southwestern part of The Netherlands and of the adjacent part of the North Sea. 1751 samples were taken with 0.1 and 0.2 m² Van Veen grabs; in the intertidal zone several hundreds of samples were dug out, whereas further samples were taken for the analysis of interstitial polychaetes and archiannelids. Of the environmental factors especially salinity, sediment composition, current velocity, water temperature, oxygen saturation, turbidity, water pollution, exposure to waves, and the influence of ice have been investigated.... |
| Tipo: Info:eu-repo/semantics/doctoralThesis |
Palavras-chave: Belgium; Zeeschelde. |
| Ano: 1973 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6594 |
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| Billen, G.; Joiris, C.R.; Wijnant, J.; Gillain, G.. |
| Concentrations and utilization rates of alanine, aspartate, lysine, glucose, glycollic, acetic and lactic acids have been determined on 6 occasions at least, during a full seasonal cycle in the water column of 3 stations (Scheldt estuary, coastal North Sea and English Channel) with greatly differing biological characteristics. No significant differences in substrate concentration could be detected between the 3 stations, although the rate of utilization of all substrates differed greatly, decreasing in the order estuarine > coastal > open sea environment. This apparent paradox is explained by aid of a simple model showing that the steady state concentration of a particular substrate is independent of its rate of production (and thus of consumption)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic compounds ANE; Belgium; Belgian Coast ANE; English Channel Belgium; Zeeschelde. |
| Ano: 1980 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6912 |
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| Louis, A.; Clarysse, R.. |
| This study shows that the principal ecological factors influencing the studied area are light, determined by very unequal day lengths, the wind, provoking a fairly homogenically mixed layer of microscopic organisms, and water depth, which in correlation with the proximity of the coast line determined the nutrient salinity concentration. The floral study allowed the determination of algal concentration in the different zones during different periods of the year, and also the quantitative and qualitative photosynthetic activity fluctuations of several florules. The study also resulted in a zonal and chronological delimitation of a large number of species of the studied area. The degressive lists, based on the mean algal frequency, showed the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoplankton ANE; Belgium; Zwin ANE; North Sea Belgium; Het Zwin natuurreservaat. |
| Ano: 1971 |
URL: http://www.vliz.be/imisdocs/publications/341463.pdf |
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| Persoone, G.; De Pauw, N.. |
| 1. Ostend, situated in the middle of the Belgian coast, is a typical seaside resort with a population of 60,000 in the winter and up to 200,000 in summer. All sewage (to the major part raw dornestic sewage, to a lesser extent sewage of industrial origin) flows into its harbour, causing a daily in flow of ca. one part of sewage per 100 parts of harbour water. This heavy pollution load causes significant physico-chemical and biological consequences. 2. The number of "estuarine" bacteria has increased enormously due to the great daily input of organic matter. The number of coliform bacteria is high; it decreases towards the seaward entrance of the harbour. 3. The beach in the small vicinity of the harbour is polluted. 4. The harbour water contains low... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harbours Pollution ANE; Belgium; Oostende Harbour. |
| Ano: 1968 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3438 |
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| Polk, P.. |
| The Tunicate <i>Botryllus schlosseri</i> (Pallas) was observed for the first time in the sluice-dock (Bassin de Chasse) of Ostend during the year 1960. This species was probably imported into Belgium together with spat from Zealand (Holland). During the year the species has spread and multiplied extensively. This species can therefore be considered as belonging to the Belgian marine fauna. The sexual reproduction and settling of new colonies took place during the months of August, September, October and November. During those months a settling of 98% was observed on the test surfaces in the immediate vicinity of the infected oysters. About 1 km from this locality in the Bassin de Chasse, where no infected oysters were found, a settling of only... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oyster culture Parasites Botryllus schlosseri (Pallas; 1766) ANE; Belgium. |
| Ano: 1962 |
URL: http://www.vliz.be/imisdocs/publications/241948.pdf |
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| Warmoes, T.; Backeljau, T.; De Bruyn, L.. |
| During an intensive survey of the littorinid fauna of the Belgian coast, five species were recorded alive, viz. <i>Littorina littorea, L. saxatilis, L. obtusata, L. mariae</i> and <i>L. neglecta</i>. The latter two of these are new to the Belgian fauna, but they occur only in very restricted populations. <i>L. obtusata</i> shows a local distribution, whereas <i>L. littorea</i> and <i>L. saxatilis</i> are both very common. For each species occuring in Belgium, detailed information on distribution, habitat and polymorphism is provided. Finally some topics for further research are outlined. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution Taxonomy Littorina littorea (Linnaeus; 1758) [Common periwinkle] Littorina mariae Sacchi & Rastelli; 1966 [flat periwinkle] Littorina neglecta Bean; 1844 Littorina obtusata (Linnaeus; 1758) Littorina saxatilis (Olivi; 1792) [Rough periwinkle] ANE; Belgium; Belgian Coast. |
| Ano: 1988 |
URL: http://www.vliz.be/imisdocs/publications/141461.pdf |
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| Registros recuperados: 174 | |
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