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Investigations on blue whiting in the area west of the British Isles, spring 1994

Monstad, Terje; Belikov, Sergey V.; Coombs, Stephen H.
Working paper
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CM_1994_H_12.pdf (2.120Mb)
URI
http://hdl.handle.net/11250/105309
Date
1994
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  • ICES CM documents authored by IMR scientists (1949-2011) [3138]
Original version
This report is not to be cited without prior reference to the authors  
Abstract
From March 25 to April 15 the Norwegian R.V. "Johan Hjort"

carried out acoustic surveying and biological and plankton

sampling on the blue whiting population congregated for

spawning along the shelf edge west of the British Isles.

Due to extremely bad weather conditions the survey was notably

amputated, causing the rate of area coverage and number of

trawl, hydrological and plankton stations to become rather

low.

The spawning stock size was estimated to 4.1 mill. tonnes,

which, however, must be considered as an underestimate. Like

last year, the 1989-yearclass was found to dominate the

stock.

The temperature in the upper 200m layer was generally lower

than observed in 1993.

Blue whiting eggs and larvae were taken at the shelf-edgs and

over Porcupine Bank. Eggs were taken in increasing abundance

from he surface to a maximum at 380-400m depth.
Publisher
ICES
Series
ICES CM Documents;1994/H:12

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