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RV Lough Foyle LFmay96
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RV Lough Foyle (74LG) |
Cruise identifier | LFmay96 |
Cruise period | 1996-05-06 — 1996-05-08 |
Status | Completed |
Port of departure | Belfast, United Kingdom |
Port of return | Belfast, United Kingdom |
Purpose | Research |
Objectives | This 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 scientist | S Ivan Heaney (Department of Agriculture for Northern Ireland) |
Cruise report | ![]() |
Ocean/sea areas | |
General | Irish Sea and St. George's Channel |
Specific | Irish Sea. |
Measurements | |
Physical oceanography | |
CTD stations | Quantity: 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. |
Phytobenthos | 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. |