RV Cirolana CIR5/89
Cruise summary report
|Ship name (ship code)||RV Cirolana (74CZ)|
|Cruise period||1989-05-19 — 1989-06-12|
|Port of departure||Lowestoft, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
|Objectives||1. To participate in the international mackerel egg survey of the western stock, assessing the production of mackerel eggs in the area between latitudes 48ºN and 52ºN.
2. To take samples of mackerel by 'feathering' in daylight over a representative area of the plankton survey grid for fecundity studies.
3. To examine diurnal periodicity in mackerel spawning from five staging of eggs in relation to a linked shipboard incubation experiment, and sampling with adult mackerel.
4. To sample on a grid of 62 stations in the Bristol Channel and its western approaches for sole eggs and larvae.
|Chief scientist||John H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Cruise report||(0.15 MB)|
|General||Irish Sea and St. George's Channel|
|Specific||Bristol Chan./Celtic Sea/W. Approaches|
|Surface measurements underway (T,S)|
|Water bottle stations||Quantity: number of stations = 194|
Description: surface S only
|CTD stations||Quantity: number of stations = 193|
|Biology and fisheries|
|Phytoplankton||Quantity: number of stations = 193|
|Zooplankton||Quantity: number of stations = 193|