RV Cirolana CIR5/86
Cruise summary report
|Ship name (ship code)||RV Cirolana (74CZ)|
|Cruise period||1986-05-09 — 1986-06-05|
|Port of departure||Lowestoft, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
|Objectives||1. 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 scientist||John H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Project||Mackerel Egg Survey|
|Cruise report||(0.25 MB)|
North East Atlantic Ocean (limit 40W)
|Specific||Western Approaches, Celtic Sea and Bay of Biscay|
|Surface measurements underway (T,S)||Description: See MAFF FR Data report No 17, 1989|
|CTD stations||Quantity: number of stations = 161|
|Biology and fisheries|
|Phytoplankton pigs (eg chlorophyll, fluorescence)||Description: chlorophyll,fluorescence|
|Phytoplankton||Quantity: number of samples = 165|
|Zooplankton||Quantity: number of samples = 165|
|Demersal fish||Quantity: number of hauls = 11|