Cruise inventory

RV Lough Foyle LFmay96

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLFmay96
Cruise period1996-05-06 — 1996-05-08
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeResearch
ObjectivesThis is a short experimental seed-corn cruise to better quantify physical and biological factors and rate processes determining the metabolism and fisheries of the Irish sea. In doing so it brought together relevant experience from within and without DANI.
1. To describe the physical (light, Stratification), chemical (salinity, nutrients) and biological (chlorophyll a, plankton) structure of nearshore and offshore regions of the Western irish sea with particular reference to anomalous data collected from the same areas during mid-April 1996.
2. To make measurements of algal growth rates and nitrate reductase of phytoplankton from samples collected at the deep chlorophyll maximum offshore. These samples provided material for Dr Kuwata to examine resting stages of phytoplankton.
3. To collect fish larvae for determining growth rates by image analysis of dividing muscle cells.
Chief scientistS Ivan Heaney (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LFmay96 cruise report lf_may96.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea.
Measurements 
Physical oceanography 
CTD stationsQuantity: number of measurements = 2
Description: A CTD and Light profile was made at a MAFF bouy
Optics (eg underwater light levels)Quantity: number of measurements = 2
Description: A CTD and Light profile was made at a MAFF bouy
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 4
Description: Samples to detect the changes in chlorophyll a and algal growth. Measure every 3 hours for a 24 hour period.
PhytobenthosQuantity: number of samples = 4
Description: Samples to detect the changes in chlorophyll a and algal growth. Measure every 3 hours for a 24 hour period.