RV Cefas Endeavour 13/12
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Cefas Endeavour (74E9) |
| Cruise identifier | 13/12 |
| Cruise period | 2012-08-08 — 2012-09-08 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | Lowestoft, United Kingdom |
| Purpose | Research |
| Objectives | Primary Objective: To carry out a groundfish survey of the North Sea as part of the ICES coordinated IBTS, using a standard GOV trawl in order to obtain information on: a) Distribution, size composition and abundance of all fish species caught. b) Age - length distribution of selected species. c) Distribution of fish in relation to their environment. d) Distribution of macrobenthos and anthropogenic debris. e) Surface and bottom temperature and salinity data using CTD rosette and Niskin Bottle. f) Length weight & maturity information using individual fish measurements, in support of the EU Data Regulation. RV Cefas Endeavour sailed from Lowestoft on 8 August 2012 at 00:01 to begin the Quarter 3 IBTS North Sea Groundfish Survey for the UK. A valid GOV trawl haul was successfully completed at all of the 75 primary station positions. Surface and bottom salinity samples and a water column CTD profile were taken at 74 of the primary stations fished. A total of 7301 biological samples were taken for the primary target species. In addition, a total of 148 samples were also taken from elasmobranchs captured during the survey. RV Cefas Endeavour returned back to Lowestoft on 8 September at 02:00. |
| Chief scientist | Sophy McCully Phillips (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory) |
| Project | United Kingdom Ocean Acidification Research Programme (UKOA) |
| Cruise report |  (1.32 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | Dutch coast, German coast, Swallow’s Hole, southwest of Norway, Scottish Coast, Orkney, Shetland |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of stations = 74 Description: Surface and bottom seawater collected from 74 stations |
| CTD stations | Quantity: number of profiles = 74 Description: CTD casts |
| Other physical oceanographic measurements | Quantity: number of deployments = 3 Description: A baited underwater camera frame was deployed to video record piscivorous fish in the area |
| Other physical oceanographic measurements | Quantity: number of recoveries = 3 Description: Recovery of a baited underwater camera frame |
| Contamination | |
| Other contaminant measurements | Quantity: number of stations = 42 Description: Litter collection from the 89 trawls - marine litter was present in 42 stations |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of experiments = 54 Description: Pigment and flow cytometry conducted at 54 CTD stations |
| Particulate organic matter (inc POC, PON) | Quantity: number of samples = 75 Description: Particulate in/organic carbon analysis of seawater was conducted at 75 stations |
| Dissolved organic matter (inc DOC) | Quantity: number of experiments = 53 Description: Seawater collected from 53 CTD stations and incubations conducted to determine rate of dissolved organic matter degradation by the natural microbial community |
| Zooplankton | Quantity: number of deployments = 50 Description: 50 MIK net tows for Jellyfish |
| Birds | Quantity: activity duration in days = 31 Description: Seabird observations made by observers |
| Mammals and reptiles | Quantity: activity duration in days = 31 Description: Cetacean recordings made by observers |
| Demersal fish | Quantity: number of hauls = 89 Description: 75 stations fished with nylon GOV, 14 fished with poly GOV net |
| Taggings | Quantity: number of specimens = 88 Description: 88 elasmobranchs tagged with Petersen discs |
| Other biological/fisheries measurement | Quantity: number of samples = 7301 Description: 7301 biological samples, including otoliths collected for ageing purposes for commercial fish |
| Geology and geophysics | |
| Grab | Quantity: number of samples = 38 Description: Day grabs for particle sediment analysis |
| Single-beam echosounding | Quantity: activity duration in days = 31 Description: Fisheries acoustic data were continuously collected at three operating frequencies (38 kHz, 120 kHz and 200 kHz), using the Simrad EK60 split beam sounder |
| Data held at BODC | |
| Discrete samples | |
| 73 CTD frame plus rosette sampler | Total dissolved inorganic carbon (TCO2) concentration in the water column Nitrite concentration parameters in the water column Phosphate concentration parameters in the water column Salinity of the water column Temperature of the water column Silicate concentration parameters in the water column Ammonium and ammonia concentration parameters in water bodies Nitrate concentration parameters in the water column Alkalinity, acidity and pH of the water column |
| 63 Sample taken from ship's non-toxic supply | Total dissolved inorganic carbon (TCO2) concentration in the water column Nitrite concentration parameters in the water column Phosphate concentration parameters in the water column Salinity of the water column Temperature of the water column Silicate concentration parameters in the water column Ammonium and ammonia concentration parameters in water bodies Nitrate concentration parameters in the water column Alkalinity, acidity and pH of the water column |
