FRV Scotia 0510S
|Ship name (ship code)||FRV Scotia (748S)|
|Cruise period||2010-04-20 — 2010-05-11|
|Port of departure||Aberdeen, United Kingdom|
|Port of return||Aberdeen, United Kingdom|
1. To carry out mackerel egg survey (ICES Triennial Survey), on the western shelf and shelf edge in the area from 51N to 60N.
2. To collect fish samples, by trawling, for atresia and fecundity analysis back at the laboratory.
The vessel will proceed to the first plankton station line at 590 45'N 5o15W. Plankton stations will be taken along the line 590 45'N at 30' intervals. Subsequent transects will be at 1oN intervals with stations at 30' E/W intervals. Plankton stations will be taken using the Gulf VII sampler with mounted CTD, which will record salinity and temperature during the tow. The plankton tows will require the vessel to deploy the sampler at 1-2 knots, and then steam at 5 knots. The sampler will then be lowered at a steady rate (10m/min) from the plankton crane to within 5m of the seabed or 200m - whichever is shallower. The sampler will then be recovered at the same speed. Once aboard, plankton samples will be washed from the sampler net, fixed in formalin and scored for egg abundance. Trawl samples will be taken at the discretion of the scientist in charge. There should be a maximum of 15 trawls for the whole survey, and will usually be taken at the shelf edge. The precise length of each transect cannot be defined in advance as this survey uses an adaptive design, where sampling along a line will continue until there are no or very small numbers of eggs.
The half landing is expected to be in Ireland around 2 May and probably in Galway, depending on the progress of the survey. Following the half landing, the survey will proceed back over the area covered in the first half with transects interlaced between those carried out during the first half.
Normal contact will be retained with the laboratory throughout, and with other vessels taking part in the survey.
|Chief scientist||Finlay Burns (Marine Scotland Aberdeen Marine Laboratory)|
|Cruise programme||(0.02 MB)|
|General||North East Atlantic Ocean (limit 40W)|
|Specific||North East Atlantic|
|Track charts||(0.11 MB)|