Cod avoidance techniques for the Dutch and Belgian fishing fleets

Fisheries managers go to great lengths to reduce cod catches in the North Sea, aiming for recovery of the cod stock. The Dutch government asked IMARES to provide an overview of all measures that are in place in various countries around the North Sea for reducing cod catches. The Dutch fisheries managers were specifically interested in the existence of gear adjustments, which might also be applicable in Dutch fisheries. With a complete overview of possible measures, the government, fishing industry and gear scientists can decide together which gear adjustments may be effective and feasible in D... Mehr ...

Verfasser: van Marlen, B.
Polet, H.
Quirijns, F.J.
Dokumenttyp: report
Erscheinungsdatum: 2012
Verlag/Hrsg.: IMARES
Schlagwörter: cod / fish stocks / fishery management / fishery resources / fishing gear / kabeljauw / visbestand / visserijbeheer / visstand / vistuig
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-29040710
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://research.wur.nl/en/publications/cod-avoidance-techniques-for-the-dutch-and-belgian-fishing-fleets

Fisheries managers go to great lengths to reduce cod catches in the North Sea, aiming for recovery of the cod stock. The Dutch government asked IMARES to provide an overview of all measures that are in place in various countries around the North Sea for reducing cod catches. The Dutch fisheries managers were specifically interested in the existence of gear adjustments, which might also be applicable in Dutch fisheries. With a complete overview of possible measures, the government, fishing industry and gear scientists can decide together which gear adjustments may be effective and feasible in Dutch fisheries. Whether a gear adjustment is effective, depends on changes in selectivity of the adjusted gear compared to the standard gear. Selectivity depends on the shape and size of fish and on the shape and size of meshes in the cod-end. Also behavioural differences between species determine selectivity. IMARES and ILVO made an inventory of existing gear adjustments for reduction of the cod catch. For a series of gear adjustments we determined the effectiveness and applicability for the Dutch and Belgian fisheries. ; Visserijbeheerders zetten alles in het werk om kabeljauwvangsten in de Noordzee te verminderen, zodat het kabeljauwbestand zich kan herstellen. De Nederlandse overheid vroeg IMARES om een overzicht van maatregelen, die in verschillende landen rond de Noordzee in gebruik zijn voor het verminderen van kabeljauwvangsten. De beheerder is specifiek geïnteresseerd in tuigaanpassingen in de landen om ons heen, die ook in de Nederlandse visserij toegepast zouden kunnen worden. Met een goed overzicht van de mogelijke maatregelen kunnen overheid en visserijsector samen bespreken welke tuigaanpassingen effectief en haalbaar lijken voor de Nederlandse visserij. Of een tuigaanpassing effectief is, hangt af van de verandering in selectiviteit vergeleken met het standaardtuig. Selectiviteit komt voort uit de relatie tussen de vorm en afmetingen van de vis en de vorm en afmetingen van de mazen in de kuil. Ook ...