Cruise inventory

RV Cirolana CIR5/86

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR5/86
Cruise period1986-05-09 — 1986-06-05
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To conduct a plankton survey using the 53cm sampler with Guildline CTD, to assess the production of mackerel eggs from the western stock.
2. To sample mackerel on the spawning grounds using either a bottom or midwater trawl and to take samples for fecundity estimates. Other groundfish will also be sampled from the bottom trawl hauls.
3. To monitor continuously sub-surface sea water for temperature, salinity and chlorophyll 'a' fluorescence. Periodic calibration of the chlorophyll 'a' measurements will be made by acetone extractions.
4. To undertake additional sampling to study the spawning environment and recruitment processes in relation to mackerel eggs and larvae as part of the IMER parallel research programmes.
Chief scientistJohn H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
ProjectMackerel Egg Survey
Coordinating bodyICES
Cruise reportRV Cirolana CIR5/86 cruise report ci5_86.pdf — access key 'C' (0.25 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Bristol Channel
North East Atlantic Ocean (limit 40W)
SpecificWestern Approaches, Celtic Sea and Bay of Biscay
Track chartsRV Cirolana CIR5/86 cruise track — trk3239.html RV Cirolana CIR5/86 cruise track — trk3239a.html
Physical oceanography 
Surface measurements underway (T,S)Description: See MAFF FR Data report No 17, 1989
CTD stationsQuantity: number of stations = 161
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: chlorophyll,fluorescence
PhytoplanktonQuantity: number of samples = 165
ZooplanktonQuantity: number of samples = 165
Demersal fishQuantity: number of hauls = 11