Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

FRV Clupea 1893C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier1893C
Cruise period1993-09-23 — 1993-10-12
Port of departureFraserburgh, United Kingdom
Port of returnFraserburgh, United Kingdom
ObjectivesTo 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 scientistSimon Greenstreet (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 1893C cruise report cl18_93.pdf — access key 'C' (0.24 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificMoray Firth
Track chartsFRV Clupea 1893C cruise track — trk4067a.html FRV Clupea 1893C cruise track — trk4067b.html FRV Clupea 1893C cruise track — trk4067c.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 24
Chemical oceanography 
PhosphateQuantity: number of stations = 24
NitrateQuantity: number of stations = 24
NitriteQuantity: number of stations = 24
AmmoniaQuantity: number of stations = 24
SilicateQuantity: number of stations = 24
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 24
ZooplanktonDescription: Dutch Gulf III
Mammals and reptilesDescription: cetaceans and seals
Pelagic fishDescription: trawl hauls PT154
Demersal fishQuantity: number of hauls = 14
Description: Jackson Rockhopper trawl
Acoustic reflection on marine organisms.