|
|
|
|
|
| De Clerck, R.; Redant, F.. |
| In 1973 the commercial shrimp catches reached the very high level of 1615 tons. This represented the highest catch since 1956 and twice the landings of 1971 or 1972. The average engine-power of the vessels was 147.3 hp and the average catch per hour fishing was 23.6 kg. The catch curve shows the same pattern as the previous years, with a marked peak in October. This peak however was in 1973 (51 kg/ hour fishing) clearly much higher than in 1971 (33 kg/hour fishing) or in 1972 (30 kg/hour fishing). The experimental shrimp fishery was carried out by the <i>RV Hinders</i>. On the fishing ground of the Westdiep five stations were monthly sampled with an otter trawl. The shrimp catches were divided into two length classes (smaller or larger than 54... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 1975 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3520 |
| |
|
|
| Redant, F.; De Clerck, R.. |
| The report describes the Belgian <i>Nephrops</i> directed fishery in the Central North Sea (Botney Gut-Silver Pit area) and analyzes the diurnal variations in CPUE and catch composition of several commercial <i>Nephrops</i> trawlers operating in this area. Peak CPUE-values were generally obtained after dawn and before dusk. Some anomalies however did occur. These are discussed in relation to the natural variations in light intensity on the sea floor and the food requirements of <i>Nephrops</i>. There was no evidence of significant changes in the length composition of <i>Nephros</i> taken at different times of the day. The data even suggest that all size groups of <i>Nephros</i> respond in the same... |
| Tipo: Info:eu-repo/semantics/book |
Palavras-chave: Circadian rhythms Length Nephrops ANE; Belgium ANE; North Sea. |
| Ano: 1984 |
URL: http://www.vliz.be/imisdocs/publications/129008.pdf |
| |
|
| |
|
|
|
