Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

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one publication added to basket [229210]
By-catch and Discarding in Pelagic Trawl Fisheries: Final report Morizur, Y.; Tregenza, N.; Heessen, H.; Berrow, S.; Pouvreau, S. (1996). By-catch and Discarding in Pelagic Trawl Fisheries: Final report. IFREMER: [s.l.]. 213 pp.

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Beschikbaar in	Auteurs
VLIZ: Open access 251012 [ download pdf ]

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Trefwoorden

Aquatic organisms > Marine organisms > Aquatic mammals > Marine mammals Bycatches Characteristics > Values Fisheries > Marine fisheries > Pelagic fisheries Fishing vessels > Trawlers Forestry > Forestry practices > Logging > Landings ANE, France [Marine Regions]; ANE, Kanaal [Marine Regions]; ANE, Nederland [Marine Regions]; ANE, North East Atlantic [Marine Regions]; ANE, United Kingdom [Marine Regions] Marien/Kust

Author keywords

Albacore, Bluefin tuna, Bass, Black bream, Whiting, Hake, Anchovy, Pilchard, Mackerel, Horsemackerel, Seal, Cetacean, Incidental mammal catch, Reasons for discarding, Discards, By catch, Pelagic trawl

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Auteurs		Top
Morizur, Y. Tregenza, N. Heessen, H.	Berrow, S. Pouvreau, S.

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Abstract

Unintentional catches of dolphins were recorded in four of the investigated fisheries (Dutch horsemackerel, French tuna, French hake and French sea bass) at a rate of 1 dolphin per 100 tow hours; Grey seals were caught in the Irish herring fishery at a rate of 4 individuals per 100 tow hours. The fish catches showed a high selectivity in several pelagic fisheries with a low discard rate (< 20 % by weight of the total catch) and a high percentage of the target species (> 50 % by weight) in the catch. However in some fisheries poor selectivity was observed particularly in the French hake fishery (with discards equal to 50 % of the total catch) and in the French black bream fisheries where legal targeted individuals amounted less than 30 % by weight in the total catch. This might be improved by appropriate technical measures such a minimum mesh size appriopriate according to the target species.

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