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 [227506]

Long-term trends on the effects of the southern North Sea beamtrawl fishery on the bivalve mollusc Arctica islandica L. (Mollusca, bivalvia) Witbaard, R.; Klein, R. (1994). Long-term trends on the effects of the southern North Sea beamtrawl fishery on the bivalve mollusc Arctica islandica L. (Mollusca, bivalvia). ICES J. Mar. Sci./J. Cons. int. Explor. Mer 51: 99-105 In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139; e-ISSN 1095-9289, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 248993 [ download pdf ]

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Trefwoorden

Animal products > Shells Beam trawlers Damage Disturbances Temporal variations > Long-term changes Arctica islandica (Linnaeus, 1767) [WoRMS] ANE, Noordzee [Marine Regions] Marien/Kust

Author keywords

Arctica islandica, bottom fisheries, North Sea

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Auteurs		Top
Witbaard, R., meer Klein, R.

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Abstract

Arctica islandica has been used as an indicator organism for the intensity of bottom trawling in the southern North Sea. That this species is affected by beamtrawl fisheries is illustrated by the high incidence of damage found on shells from heavily fished areas. Between 80 and 90% of the damage was found at the posterior ventral side of the shell. This can be explained by the orientation of the living animal in the upper sediment layer and the horizontal movement of the tickler chains on the bottom. Scars on the external shell surface were dated by internal growth lines, revealing that the sampling site had been disturbed at least once a year since 1974. The observed trends in the occurrence of scars per year show a striking coincidence with the increase in capacity of the Dutch fishing fleet over the period 1972- 1991.

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