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(1)

ICES CM 2002/X:06

BecPelag 2001

The use of in situ deployment Of live organisms and passive Samplers to monitor

Contaminants in pelagic ecosystems

Presented by Bjorn Serigstad

(2)
(3)

Fish Active and Passive uptake Blue mussel

filter feeder

SPMD Passive absorber

(4)
(5)

spreading of

Simulated Produced water from North Sea Oilfields over a period of

4 months

(6)
(7)

Main food organisms for caged cod at the Norwegian coast

CALANUS

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Growth of caged cod

in costal Norwegian water

0 10 20 30 40

January April August Desember

% Growth

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Caged cod at Statfjord

0,75 0,6 0,9 1,05 1,2

5 0 0 / GB 1 2 0 0 0 / GB 2 10 0 0 0 GB 3 R e f./ GB 4

Condition (F)

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Conclusion

-The Caging experiment was successful -All the cages was retrieved

-The cod and blue mussels seemed to be in fairly good condition -The cod at the station nearest to Statfjord was in a slightly

Better condition than the control

-Cod from the Germen Bight was in better condition than those from the Statfjord area. (there may be a better attraction of food organisms to the light in the costal water).

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