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Rochet, Marie-joelle; Trenkel, Verena; Peronnet, Isabelle. |
Discards of the French trawler fleet operating in the Celtic Sea in 1997 were studied. Twenty-six trips, representing 0.8% of the total fishing effort, were sampled. This fleet consists of three métiers, benthic trawlers, demersal trawlers and Nephrops trawlers. The fleet discarded an estimated 30,000 tons of animals in 1997, while landing 63,000 tons. The total quantity discarded did not differ among métiers, but the species composition of discards did. Benthic trawlers discarded mainly by-catch species, whereas demersal and Nephrops trawlers discarded primarily their target species. Whiting, megrim, Nephrops and hake were discarded in larger numbers than landed. Hence discards should probably be taken into account in catch-based assessments. However,... |
Tipo: Text |
Palavras-chave: Espèce non commerciale; Langoustine; Baudroie; Poisson plat; Gadidé; Mer celtique; Echantillonnage des rejets; Non commercial species; Nephrop; Anglerfish; Flatfish; Gadoid; Trawler; Celtic Sea; Discard sampling. |
Ano: 2001 |
URL: https://archimer.ifremer.fr/doc/2001/rapport-1575.pdf |
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Leaute, Jean-pierre. |
This document presents a comparative assessment of four triannual analyses carried out between 1986 and 1995, on 1300 boats, on average, from the 35 ports of Southern Bay of Biscay fishing fleets (from Loire river to Spanish border). Fisheries statistics allow the identification of different fishing practices and fishing boats associated with them within the fleets. In order to allow comparison and analysis of the evolution that has taken place during the study period, the same variables (gear used, landed species) and multivariate analysis procedures have been used to produce groupings of vessels Over the period, an average of 11 components have been identified, grouped in two entities, mobile and fixed gears. If the discriminative characteristics (gears,... |
Tipo: Text |
Palavras-chave: Caseyeur; Palangrier; Fileyeur; Chalutier; Arts dormants; Arts traînants; Golfe de Gascogne; Flottille; Composante; Segmentation; Typologie; Potter; Longliner; Gillnetter; Trawler; Fixed gear; Mobile gear; Bay of Biscay; Fleet; Component; Grouping; Typologie. |
Ano: 2000 |
URL: https://archimer.ifremer.fr/doc/2000/rapport-1582.pdf |
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