RV Cirolana CIR8/85

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR8/85
Cruise period1985-09-20 — 1985-10-11
Port of departureLowestoft, United Kingdom
Port of returnSouth Shields, United Kingdom
Objectives1. To participate in the ICES coordinated herring larval survey of region IVB during the two sampling periods 16-30 September and 1-15 October.
2. To study drift and mortality of herring larvae in the area from hatching through their planktonic phase.
3. To study herring larvae diet including the availability of food organisms.
4. To study the vertical distribution of herring larvae in relation to food organisms and potential predators.
5. To sample herring larvae, other zooplankton and phytoplankton for lipid analysis, with emphasis on polyunsaturated fatty acids.
6. To sample potential herring larvae predators and to examine their gut contents on board.
7. To collect samples of herring larvae for subsequent analysis of feeding status.
8. To monitor sub-surface water continuously for salinity and chlorophyll 'a' fluorescence and to take some measurements in profile.
9. To conduct sea trials on the performance of the HP 9000 compouter.
10. To use the neuston net at 9 selected stations to look for turbot larvae. No turbot larvae were taken in any of these hauls.
Chief scientistJohn H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Cirolana CIR8/85 cruise report ci8_85.pdf (0.31 MB) 
Ocean/sea areas 
GeneralNorth Sea
North East Atlantic Ocean (limit 40W)
SpecificW. Central North Sea
Track chartsRV Cirolana CIR8/85 cruise track — trk3120.html
Physical oceanography 
CTD stations
Surface drifters/drifting buoysQuantity: number of deployments = 2
Description: Argos satellite buoys
Biology and fisheries 
PhytoplanktonQuantity: number of samples = 316
ZooplanktonQuantity: number of samples = 316
NeustonQuantity: number of hauls = 8
Description: half hour tows
Demersal fishQuantity: number of hauls = 4
Description: Engel trawls.