Cruise inventory

FRV Clupea 0705C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier0705C
Cruise period2005-05-18 — 2005-05-31
StatusCompleted
Port of departureFraserburgh, United Kingdom
Port of returnFraserburgh, United Kingdom
PurposeResearch
Objectives1. To carry out a demersal trawl survey to determine the abundance and distribution of whiting, haddock and cod, the main fish predators of sandeels. At each trawl station the length frequency of all fish species caught will be determined. Sub-samples of the three gadoids will be weighed to determine length-weight relationships. Otoliths will be taken to determine age composition. Stomach samples will be collected to establish diet and food consumption rates, and livers and gonads will be removed to determine Hepato- and Gonado- Somatic Indices. (Any sandeels and clupeid fish caught during the demersal trawling will be worked up to determine length frequency distributions, length-weight relationships and age composition.)
2. To determine spatial variation in water temperature and salinity across the Wee Bankie/Marr Bank study area using a Seabird CTD sampler. Approximately 40 vertical dip stations will be sampled utilising the demersal trawl stations and additional locations mid-way between the trawl stations.
3. To undertake an acoustic survey of sandeels and clupeid fish in the water column using 38 and 120 kH. Concentrations of fish will be sampled using the pelagic trawl. Species composition and length frequency distributions of fish caught will be determined. Sub samples will be weighed and their otoliths removed to establish length-weight relationships and age composition.
4. To conduct a RoxAnn survey of the substrate in the study area to investigate variation in the sandbank structure between this and previous cruises.
5. To conduct a survey of seabirds using the study area, to determine their abundance and distribution, using standard census methods.
6. To record all sightings of marine mammals (number of animals, species if possible, and their location) observed during the course of the cruise.
Chief scientistSimon Greenstreet (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 0705C cruise report 0705c.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificWee Bankie/Marr Bank
Measurements 
Physical oceanography 
CTD stationsQuantity: number of stations = 44
Description: Hydrographic stations. All work undertaken between 0400 and 1600 BST. CTD deployed close to the seabed.
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 44
Description: 500 ml water samples were collected at each hydrographic station for subsequent chlorophyll analysis to calibrate the fluorometer. Reverser bottle used.
BirdsQuantity: activity duration in days = 5
Description: 6 Transects covered. Seabird survey work. All work undertaken between 0400 and 1600 BST. Seabird survey data was aggregated over the same five minute periods of acoustic integration to allow direct comparison of predator abundance and prey density.
Mammals and reptilesQuantity: number of observations = 17
Description: Marine mammel sightings. 13 Grey Seals, 2 Minke Whales, 1 Porpoise, 1 Common Seal
Pelagic fishQuantity: activity duration in days = 5
Description: 6 Transects covered. Acoustic survey work. All work undertaken between 0400 and 1600 BST. Acoustic data were integrated over 5 minute periods. Concentrations of fish in the water column were sampled by pelagic trawl to determine species and length composition. The total catch of each species was determined. Length stratified samples of Clupeids and Sandeels were measured and weighted to establish weight-length relationships. Otoliths were also taken from these samples.
Demersal fishQuantity: number of stations = 19
Description: Dermersal stations. All work undertaken between 0400 and 1600 BST. A Jackson Rockhopper demersal trawl gear (BT 158) with 10 mm codend mesh was deployed at each station. The total numbers and length of all species in the catch was determined. Samples of herring, sprats, sandeels, whiting, haddock and cod were weighted to determine length-weight relationships and otoliths of herring, sprats, and sandeels were collected to determine age at length keys. Samples of whiting and haddock were retained and frozen for dietry analysis at the laboratory. Samples of gurnard were also collected.
Data held at BODC 
Series/Profiles 
44  CTD/STD cast
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
7165812005-05-19 06:15 56° 27' 37" N  1° 50' 6" W  View metadata report for BODC series reference number 716581
7165932005-05-19 07:52 56° 27' 29" N  1° 40' 7" W  View metadata report for BODC series reference number 716593
7166002005-05-19 08:36 56° 22' 31" N  1° 39' 59" W  View metadata report for BODC series reference number 716600
7166122005-05-19 09:20 56° 17' 32" N  1° 39' 56" W  View metadata report for BODC series reference number 716612
7166242005-05-19 10:00 56° 17' 27" N  1° 31' 21" W  View metadata report for BODC series reference number 716624
7166362005-05-19 12:20 56° 7' 25" N  1° 20' 25" W  View metadata report for BODC series reference number 716636
7166482005-05-19 13:10 56° 2' 11" N  1° 19' 43" W  View metadata report for BODC series reference number 716648
7166612005-05-20 04:34 56° 2' 29" N  1° 50' 4" W  View metadata report for BODC series reference number 716661
7166732005-05-20 05:13 56° 2' 12" N  1° 42' 43" W  View metadata report for BODC series reference number 716673
7166852005-05-20 06:50 56° 2' 31" N  1° 30' 7" W  View metadata report for BODC series reference number 716685
7166972005-05-20 07:30 56° 6' 54" N  1° 32' 25" W  View metadata report for BODC series reference number 716697
7167042005-05-20 09:01 56° 12' 18" N  1° 30' 14" W  View metadata report for BODC series reference number 716704
7167162005-05-20 09:37 56° 13' 12" N  1° 38' 8" W  View metadata report for BODC series reference number 716716
7167282005-05-20 11:03 56° 7' 41" N  1° 40' 20" W  View metadata report for BODC series reference number 716728
7167412005-05-20 11:53 56° 8' 40" N  1° 50' 46" W  View metadata report for BODC series reference number 716741
7167532005-05-20 13:30 56° 2' 37" N  1° 58' 50" W  View metadata report for BODC series reference number 716753
7167652005-05-21 04:02 56° 2' 28" N  2° 9' 58" W  View metadata report for BODC series reference number 716765
7167772005-05-21 04:37 56° 7' 28" N  2° 10' 59" W  View metadata report for BODC series reference number 716777
7167892005-05-21 06:24 56° 7' 36" N  2° 0' 2" W  View metadata report for BODC series reference number 716789
7167902005-05-21 07:00 56° 12' 17" N  1° 59' 49" W  View metadata report for BODC series reference number 716790
7168082005-05-21 08:20 56° 12' 32" N  1° 50' 12" W  View metadata report for BODC series reference number 716808
7168212005-05-21 09:04 56° 17' 34" N  1° 46' 23" W  View metadata report for BODC series reference number 716821
7168332005-05-21 11:25 56° 17' 23" N  1° 59' 53" W  View metadata report for BODC series reference number 716833
7168452005-05-21 12:17 56° 12' 37" N  2° 9' 45" W  View metadata report for BODC series reference number 716845
7168572005-05-21 13:11 56° 7' 33" N  2° 19' 24" W  View metadata report for BODC series reference number 716857
7168692005-05-21 13:50 56° 2' 48" N  2° 18' 33" W  View metadata report for BODC series reference number 716869
7168702005-05-22 03:26 56° 2' 27" N  2° 30' 6" W  View metadata report for BODC series reference number 716870
7168822005-05-22 04:26 56° 7' 22" N  2° 39' 49" W  View metadata report for BODC series reference number 716882
7168942005-05-22 04:58 56° 7' 56" N  2° 33' 37" W  View metadata report for BODC series reference number 716894
7169012005-05-22 06:27 56° 12' 31" N  2° 30' 0" W  View metadata report for BODC series reference number 716901
7169132005-05-22 07:14 56° 11' 4" N  2° 20' 29" W  View metadata report for BODC series reference number 716913
7169252005-05-22 08:37 56° 17' 27" N  2° 20' 1" W  View metadata report for BODC series reference number 716925
7169372005-05-22 09:12 56° 17' 21" N  2° 12' 53" W  View metadata report for BODC series reference number 716937
7169492005-05-22 10:43 56° 22' 21" N  2° 9' 56" W  View metadata report for BODC series reference number 716949
7169502005-05-22 11:30 56° 22' 4" N  2° 20' 22" W  View metadata report for BODC series reference number 716950
7169622005-05-22 12:56 56° 17' 31" N  2° 29' 52" W  View metadata report for BODC series reference number 716962
7169742005-05-22 13:39 56° 22' 26" N  2° 30' 4" W  View metadata report for BODC series reference number 716974
7169862005-05-22 14:11 56° 24' 51" N  2° 35' 37" W  View metadata report for BODC series reference number 716986
7169982005-05-23 04:40 56° 27' 25" N  2° 32' 2" W  View metadata report for BODC series reference number 716998
7170012005-05-23 06:06 56° 27' 33" N  2° 20' 9" W  View metadata report for BODC series reference number 717001
7170132005-05-23 06:49 56° 27' 32" N  2° 10' 22" W  View metadata report for BODC series reference number 717013
7170252005-05-23 08:40 56° 20' 25" N  2° 1' 7" W  View metadata report for BODC series reference number 717025
7170372005-05-23 10:08 56° 22' 26" N  1° 49' 59" W  View metadata report for BODC series reference number 717037
7170492005-05-23 11:12 56° 27' 22" N  1° 59' 54" W  View metadata report for BODC series reference number 717049