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BODC Cruise Metadata Report for FRV Clupea (74CU) cruise 0705C

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name FRV Clupea (74CU) cruise 0705C
Short name 0705C
Objectives and Narrative 1. 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.
Ship FRV Clupea
Departure Port Fraserburgh, United Kingdom
Departure Date 2005-05-18
Arrival Port Fraserburgh, United Kingdom
Arrival Date 2005-05-31
Principal Scientist(s) Simon Greenstreet (Fisheries Research Services Aberdeen Marine Laboratory)
Responsible Organisation UAC-DOP
Associated Project(s)
IHB Sea Areas Visited North Sea
Marsden Squares Visited 181;3
Work Area Description Wee Bankie/Marr Bank
Work Area Bounding Polygon 55N,5W; 60N,5W; 60N,0E; 55N,0E; 55N,5W
Southern Limit 55N
Northern Limit 60N
Western Limit 5W
Eastern Limit 0E

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of stations = 44
Description: Hydrographic stations. All work undertaken between 0400 and 1600 BST. CTD deployed close to the seabed.  
Biology and fisheries  
Birds Quantity: 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.  
Demersal fish Quantity: 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.  
Mammals and reptiles Quantity: number of observations = 17
Description: Marine mammel sightings. 13 Grey Seals, 2 Minke Whales, 1 Porpoise, 1 Common Seal  
Pelagic fish Quantity: 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.  
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.  

Cruise Inventory Mooring/Buoy Operations

No information on datasets is currently available

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
44 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
716581 CTD/STD cast 2005-05-19 06:15Z 56° 27' N, 1° 50' W Click for more
716593 CTD/STD cast 2005-05-19 07:52Z 56° 27' N, 1° 40' W Click for more
716600 CTD/STD cast 2005-05-19 08:36Z 56° 22' N, 1° 40' W Click for more
716612 CTD/STD cast 2005-05-19 09:20Z 56° 17' N, 1° 40' W Click for more
716624 CTD/STD cast 2005-05-19 10:00Z 56° 17' N, 1° 31' W Click for more
716636 CTD/STD cast 2005-05-19 12:20Z 56° 7' N, 1° 20' W Click for more
716648 CTD/STD cast 2005-05-19 13:10Z 56° 2' N, 1° 19' W Click for more
716661 CTD/STD cast 2005-05-20 04:34Z 56° 2' N, 1° 49' W Click for more
716673 CTD/STD cast 2005-05-20 05:13Z 56° 2' N, 1° 42' W Click for more
716685 CTD/STD cast 2005-05-20 06:50Z 56° 2' N, 1° 30' W Click for more
716697 CTD/STD cast 2005-05-20 07:30Z 56° 7' N, 1° 32' W Click for more
716704 CTD/STD cast 2005-05-20 09:01Z 56° 12' N, 1° 30' W Click for more
716716 CTD/STD cast 2005-05-20 09:37Z 56° 13' N, 1° 38' W Click for more
716728 CTD/STD cast 2005-05-20 11:03Z 56° 7' N, 1° 40' W Click for more
716741 CTD/STD cast 2005-05-20 11:53Z 56° 8' N, 1° 51' W Click for more
716753 CTD/STD cast 2005-05-20 13:30Z 56° 2' N, 1° 58' W Click for more
716765 CTD/STD cast 2005-05-21 04:02Z 56° 2' N, 2° 10' W Click for more
716777 CTD/STD cast 2005-05-21 04:37Z 56° 7' N, 2° 10' W Click for more
716789 CTD/STD cast 2005-05-21 06:24Z 56° 7' N, 2° 0' W Click for more
716790 CTD/STD cast 2005-05-21 07:00Z 56° 12' N, 2° 0' W Click for more
716808 CTD/STD cast 2005-05-21 08:20Z 56° 12' N, 1° 50' W Click for more
716821 CTD/STD cast 2005-05-21 09:04Z 56° 17' N, 1° 46' W Click for more
716833 CTD/STD cast 2005-05-21 11:25Z 56° 17' N, 2° 0' W Click for more
716845 CTD/STD cast 2005-05-21 12:17Z 56° 12' N, 2° 9' W Click for more
716857 CTD/STD cast 2005-05-21 13:11Z 56° 7' N, 2° 19' W Click for more
716869 CTD/STD cast 2005-05-21 13:50Z 56° 3' N, 2° 18' W Click for more
716870 CTD/STD cast 2005-05-22 03:26Z 56° 2' N, 2° 30' W Click for more
716882 CTD/STD cast 2005-05-22 04:26Z 56° 7' N, 2° 39' W Click for more
716894 CTD/STD cast 2005-05-22 04:58Z 56° 7' N, 2° 33' W Click for more
716901 CTD/STD cast 2005-05-22 06:27Z 56° 12' N, 2° 30' W Click for more
716913 CTD/STD cast 2005-05-22 07:14Z 56° 10' N, 2° 20' W Click for more
716925 CTD/STD cast 2005-05-22 08:37Z 56° 17' N, 2° 19' W Click for more
716937 CTD/STD cast 2005-05-22 09:12Z 56° 17' N, 2° 12' W Click for more
716949 CTD/STD cast 2005-05-22 10:43Z 56° 22' N, 2° 10' W Click for more
716950 CTD/STD cast 2005-05-22 11:30Z 56° 22' N, 2° 20' W Click for more
716962 CTD/STD cast 2005-05-22 12:56Z 56° 17' N, 2° 30' W Click for more
716974 CTD/STD cast 2005-05-22 13:39Z 56° 22' N, 2° 30' W Click for more
716986 CTD/STD cast 2005-05-22 14:11Z 56° 24' N, 2° 35' W Click for more
716998 CTD/STD cast 2005-05-23 04:40Z 56° 27' N, 2° 31' W Click for more
717001 CTD/STD cast 2005-05-23 06:06Z 56° 27' N, 2° 20' W Click for more
717013 CTD/STD cast 2005-05-23 06:49Z 56° 27' N, 2° 10' W Click for more
717025 CTD/STD cast 2005-05-23 08:40Z 56° 20' N, 2° 1' W Click for more
717037 CTD/STD cast 2005-05-23 10:08Z 56° 22' N, 1° 49' W Click for more
717049 CTD/STD cast 2005-05-23 11:12Z 56° 27' N, 2° 0' W Click for more

Project Database

No data currently held for this cruise in the BODC Project Database

References

Track Charts

No track charts currently available

Reports

Cruise Report