RV Lough Foyle LFjul93
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Lough Foyle (74LG) |
| Cruise identifier | LFjul93 |
| Cruise period | 1993-07-31 — 1993-08-03 |
| Status | Completed |
| Port of departure | Belfast, United Kingdom |
| Port of return | Belfast, United Kingdom |
| Purpose | Research |
| Objectives | 1. To collect biological (phytoplankton and zooplankton), chemical (dissolved
inorganic nutrients and particulate carbon and nitrogen) and physical (sea temperature, conductivity and surface and sub-surface irradiance) data from selected stations in the Irish Sea for the purpose of continuing the observational study of the biological oceanography of the NW Irish Sea. 2. To undertake experiments to estimate the rate of carbon fixation by phytoplankton at selected stations using simulated in situ and in situ incubation techniques. To carry out size fractionation productivity experiments. 3. To make measurements of the natural fluorescence emitted by phytoplankton as part of a study to evaluate the use of natural fluorescence as a measure of phytoplankton biomass and production. 4. To collect sediment cores from selected stations for the purpose of estimating the amounts of phytoplankton pigments in the sediment and the organic carbon and nitrogen content of the sediment. 5. To retrieve the sediment traps deployed at station 38. |
| Chief scientist | Richard Gowen (Department of Agriculture for Northern Ireland) |
| Cruise report |  (0.06 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | Western Irish Sea and North Channel |
| Track charts | (0.01 MB) |
| Measurements | |
| Biology and fisheries | |
| Primary productivity | Quantity: number of experiments = 7 Description: Primary production experiments |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of deployments = 2 Description: Solar fluorometer |
| Sediment traps | Quantity: number of recoveries = 1 Description: Sediment traps and the guard buoys recovered from station 38 |
