RV Lough Foyle LFapr94
Cruise summary report
|Ship name (ship code)||RV Lough Foyle (74LG)|
|Cruise period||1994-04-12 — 1994-04-15|
|Port of departure||Belfast, United Kingdom|
|Port of return||Belfast, United Kingdom|
|Objectives||1) To investigate the oceanography of the coastal and central stratified region of the NW Irish Sea.
2) To undertake primary production experiments (simulated in situ) including an assessment of the relative contribution of different size fractions of the phytoplankton to total production.
3) To assess the distribution of different size classes of zooplankton.
4) To determine the distribution and biomass of dominant copepod species (DANI, MSc student.
5) To collect sediment core samples from stations 38 and 47 for C/N and pigment analysis and sediment grab samples from station 38 for identification and enumeration of benthic infauna.
|Chief scientist||Richard Gowen (Department of Agriculture for Northern Ireland)|
|Cruise report||(0.11 MB)|
|General||Irish Sea and St. George's Channel|
|Specific||NW Irish Sea|
|Water bottle stations||Quantity: number of stations = 20|
Description: Water samples taken for nutrients, C/N, size fractionation of chlorophyll, production, and phytoplankton species composition, primary production, and suspended solids
|CTD stations||Quantity: number of stations = 20|
Description: CTD profiles taken
|Transparency (eg transmissometer)||Quantity: number of stations = 20|
Description: Secchi disc used
|Optics (eg underwater light levels)||Quantity: number of stations = 19|
Description: Light measurements
|Biology and fisheries|
|Zooplankton||Quantity: number of stations = 20|
Description: 2 Bongo net hauls were made at each station. Size fractionation using a pump was carried out at 11 stations
|Geology and geophysics|
|Grab||Quantity: number of stations = 1|
Description: Grab samples collected from station 38 for macrofauna
|Core - soft bottom||Quantity: number of stations = 2|
Description: Sediment cores collected from stations 38 and 47 for chlorophyll and C/N analysis