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RV Corystes COR1/01
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RV Corystes (74RY) |
Cruise identifier | COR1/01 |
Cruise period | 2001-02-01 — 2001-02-19 |
Status | Completed |
Port of departure | Lowestoft, United Kingdom |
Port of return | Lowestoft, United Kingdom |
Purpose | Research |
Objectives | 1. To conduct a plankton survey using a 53cm Gulf VII plankton sampler to determine the distribution and abundance of mackerel (Scomber scombrus) and horse mackerel (Trachurus trachurus) eggs in the southern and western spawning areas.
2. To sample adult mackerel and horse mackerel for the estimation of fecundity and atresia using pelagic and semi-pelagic trawls. These aims are in support of the ICES co-ordinated international mackerel and horse mackerel egg survey. This cruise was fully funded by the EU (C1260) in support of the tri-ennial assessment of these stocks. |
Chief scientist | Stephen Paul Milligan (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory) |
Cruise report | (0.11 MB) |
Ocean/sea areas | |
General | Bay of Biscay North East Atlantic Ocean (limit 40W) |
Specific | Southern Biscay and west of Portugal |
Track charts | (0.10 MB) |
Measurements | |
Physical oceanography | |
Subsurface temperature and salinity measurements | Quantity: number of stations = 60 Description: completed using a 53cm Gulf VII plankton sampler with CTD sensors to determine the distribution and abundance of mackerel and horse mackerel eggs. |
Biology and fisheries | |
Phytoplankton | Quantity: number of stations = 60 Description: completed using a 53cm Gulf VII plankton sampler with CTD sensors to determine the distribution and abundance of mackerel and horse mackerel eggs. |
Zooplankton | Quantity: number of stations = 60 Description: completed using a 53cm Gulf VII plankton sampler with CTD sensors to determine the distribution and abundance of mackerel and horse mackerel eggs. |
Eggs and larvae | Quantity: number of stations = 60 Description: completed using a 53cm Gulf VII plankton sampler with CTD sensors to determine the distribution and abundance of mackerel and horse mackerel eggs. |
Pelagic fish | Quantity: number of stations = 13 Description: trawled using a Portuguese High Headline Trawl. Trawls were towed for between 30 minutes and an hour depending on the quantity of fish expected and the bottom topography. |