RV Corystes COR6/03
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Corystes (74RY) |
| Cruise identifier | COR6/03 |
| Cruise period | 2003-06-01 — 2003-06-16 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | Lowestoft, United Kingdom |
| Purpose | Fisheries |
| Objectives | 1. To use acoustic and fishing survey methods to estimate the abundance and distribution of sandeels on sandeel fishing grounds on the western Dogger Bank.
2. To use fishing survey methods (Bongo net) to estimate the abundance and distribution of plankton on the sandeel fishing grounds on the western Dogger Bank. 3. To use fishing survey methods to estimate the abundance and distribution of predatory fish feeding on sandeels on the sandeel fishing grounds on the western Dogger Bank. 4. To carry out a shipboard experiment to determine gut evacuation rates of sandeels. An insufficient number of sandeels were caught to enable this aim to be carried out. |
| Chief scientist | Julian David Metcalfe (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory) |
| Cruise programme |  (0.05 MB) |
| Cruise report | (0.18 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | western Dogger Bank |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of stations = 54 |
| Biology and fisheries | |
| Phytoplankton | Quantity: number of stations = 54 Description: Hauls were made taken using a 0.5m ring net (60 mpi). |
| Zooplankton | Quantity: number of stations = 54 Description: Hauls were made taken using a 0.5m ring net (60 mpi). |
| Pelagic fish | Quantity: number of hauls = 7 Description: Fishing for sandeels using a semi-pelagic trawl was attempted. |
| Demersal fish | Quantity: number of stations = 54 Description: Trawl survey to estimate the distribution and relative abundance of sandeel predators using a standard Granton trawl with a 12mm liner. Each trawl lasted twenty minutes. |
| Demersal fish | Quantity: number of stations = 54 Description: Dredge survey for sandeels buried in the seabed carried out using a 1.2m sandeel dredge. The dredge was towed for ten minutes at each station. |
| Geology and geophysics | |
| Dredge | Quantity: number of stations = 54 Description: Dredge survey for sandeels buried in the seabed carried out using a 1.2m sandeel dredge. The dredge was towed for ten minutes at each station. |
| Multi-beam echosounding | Quantity: number of stations = 54 Description: surveyed using the Simrad EK500 dual frequency split beam echo sounder with echo integration. |
