FRV Clupea 1893C
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Clupea (74CU) |
| Cruise identifier | 1893C |
| Cruise period | 1993-09-23 — 1993-10-12 |
| Status | Completed |
| Port of departure | Fraserburgh, United Kingdom |
| Port of return | Fraserburgh, United Kingdom |
| Purpose | Research |
| Objectives | To carry out an echo-integrator survey to determine the biomass and distribution of pelagic fish in the Moray Firth and to determine fish species and size composition through trawl sampling. To assess predatory fish abundance through demersal trawl sampling and to collect stomach samples for dietary and food consumption analysis. To determine the number and distribution of mammalian and avian predators using transect census methods and record instances of seabirds carrying prey items. To determine spatial variation in water temperature, salinity and nutrient concentrations and to assess the biomass and distribution of phytoplankton and zooplankton. |
| Chief scientist | Simon Greenstreet (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory) |
| Cruise report |  (0.24 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | Moray Firth |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of stations = 24 |
| Chemical oceanography | |
| Phosphate | Quantity: number of stations = 24 |
| Nitrate | Quantity: number of stations = 24 |
| Nitrite | Quantity: number of stations = 24 |
| Ammonia | Quantity: number of stations = 24 |
| Silicate | Quantity: number of stations = 24 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of stations = 24 |
| Zooplankton | Description: Dutch Gulf III |
| Birds | |
| Mammals and reptiles | Description: cetaceans and seals |
| Pelagic fish | Description: trawl hauls PT154 |
| Demersal fish | Quantity: number of hauls = 14 Description: Jackson Rockhopper trawl |
| Acoustic reflection on marine organisms. |
