Cruise inventory

RV Cefas Endeavour 15/11

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cefas Endeavour (74E9)
Cruise identifier15/11
Cruise period2011-09-14 — 2011-10-04
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
ObjectivesAims

1. To carry out a 4m beam-trawl survey of groundish to
i) obtain fisheries independent data on the distribution and abundance of commercial flatfish species
ii) derive age compositions of sole, plaice, cod and whiting for use in the assessments of stock size.
2. To collect biological data including weight at age of sole (Solea so/ea), plaice (Pleuronectes platessa), lemon
sole (Microstomus kitt) and other commercially important finfish species as part of Cefas' requirements under the EU Data Collection Framework.
3. To determine the distribution & relative abundance of juvenile/adult sole & plaice.
4. To collect surface & bottom temperature/salinity data using CTD and Niskin Bottle.
5. To quantify epibenthos using 4m beam trawl by-catch.
6. Collect length/weight & maturity information using individual fish measurements, in support of the EU Data Collection Framework.
7. To collect surface sea-water samples for processing on retum to Lowestoft for the analysis of caesium and tritium.
8. To collect fish samples in support of other Cefas projects and training courses.
9. To collect alkalinity, nutrient & dissolved inorganic carbon (DIC) samples.
10. To collect Thomback ray (Raja clavata) tissue samples to assess fish health.
Chief scientistIan David Holmes (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
ProjectUnited Kingdom Ocean Acidification Research Programme
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Bristol Channel
SpecificIrish Sea, Bristol Channel
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: Temperature & salinity taken at all stations from surface continuous seawater flow.
Water bottle stationsDescription: Temperature & salinity taken at selected stations from Niskin sea-bed water sampler.
Water bottle stationsDescription: Temperature & salinity taken at all stations from surface continuous seawater flow.
CTD stationsDescription: Micro CTD unit attached to beam trawl.
CTD stationsDescription: Temperature and salinity profile recorded at each Niskin station using Micro CTD unit/ESM2 profiler.
CTD stationsDescription: Temperature & salinity taken at selected stations from Niskin sea-bed water sampler.
CTD stationsDescription: Temperature and salinity profile recorded at all beam trawl stations with mini CTD unit.
Subsurface temperature and salinity measurementsDescription: Temperature & salinity taken at selected stations from Niskin sea-bed water sampler.
Chemical oceanography 
AlkalinityDescription: Alkalinity samples fro surface seawater supply.
RadioactivityDescription: 4m beam trawl. Whole finfish/crustacea/cephlopod samples for radiological analysis.
IsotopesDescription: 4m beam trawl. Queen scallops collected for isotope mapping.
Other chemical oceanographic measurementsDescription: Nutrient and Dissolved inorganic carbon samples taken from surface seawater.
Contamination 
Trace metalsDescription: Surface water samles taken for caesium/tritium analysis.
Biology and fisheries 
PhytobenthosDescription: 4m beam trawl. Length and age structure material from finfish.
ZoobenthosDescription: 4m beam trawl. Length and age structure material from finfish.
Pelagic fishDescription: 4m beam trawl. Length and age structure material from finfish.
Demersal fishDescription: 4m beam trawl. Length and age structure material from finfish.
MolluscsDescription: 4m beam trawl. Length and age structure material from finfish.
MolluscsDescription: 4m beam trawl. Queen scallops collected for isotope mapping.
CrustaceansDescription: 4m beam trawl. Length and age structure material from finfish.
TaggingsDescription: 4m beam trawl. Nurse-hound and selected ray specimens tagged/released.
Other biological/fisheries measurementDescription: 4m beam trawl. Flesh/blood samples taken from Raja clavata.
Data held at BODC 
Discrete samples 
35  Sample taken from ship's non-toxic supplyAmmonium and ammonia concentration parameters in water bodies
Silicate concentration parameters in the water column
Alkalinity, acidity and pH of the water column
Salinity of the water column
Total dissolved inorganic carbon (TCO2) concentration in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column