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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.

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one publication added to basket [18912]

Recruitment variability in dab (Limanda limanda) in the southeastern North Sea Bolle, L.J.; Rijnsdorp, A.D.; van der Veer, H.W. (2001). Recruitment variability in dab (Limanda limanda) in the southeastern North Sea. J. Sea Res. 45: 255-270. https://dx.doi.org/10.1016/S1385-1101(01)00060-0 In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 262883 [ download pdf ]

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Trefwoorden

Fishes > Osteichthyes > Pleuronectiformes > Pleuronectidae > Limanda > Limanda limanda Population functions > Recruitment A, Atlantic [Marine Regions]; ANE, Noordzee [Marine Regions] Marien/Kust

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Auteurs		Top
Bolle, L.J. Rijnsdorp, A.D., meer van der Veer, H.W.

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Abstract

Data from three annual surveys, covering inshore and offshore waters of the southeastern North Sea, were analysed to study recruitment variability in dab (Limanda limanda) over the period 1978-1997. Geometric mean abundance of 0- to 5-group dab was estimated using general linear models. Juvenile dab (0- and 1-group) were found over the entire area, from inside the estuaries to 50 m depth offshore. Environmental conditions (water temperature, wind stress, turbidity) affected the catch rates. The potential errors in the estimates of year-class strength, caused by differences in catchability, are discussed. The inter-annual pattern of year-class strength appeared to be established between ages 1 and 2, suggesting that factors determining recruitment are not restricted to the pelagic early life phase only, but also operate during the demersal juvenile phase. Recruitment variability at age 2 was in the order of 50-60% and appears to be equal to, or lower than, recruitment variability in plaice and sole. These results contradict expectations based on the concentration hypothesis, which states that the degree of variation in recruitment is inversely related to the degree of concentration during early life phases.

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