BODC Cruise Metadata Report for FRV Clupea (74CU) cruise 0807C
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | FRV Clupea (74CU) cruise 0807C |
|---|---|
| Short name | 0807C |
| Objectives and Narrative |
Objectives
The primary objective of this monitoring cruise was to determine the abundance of sandeels on the main sandbank fishing grounds (the Wee Bankie, Marr Bank and Berwick's Bank) within the northwestern North Sea sandeel closure area. The absolute abundance index is derived through combination of a demersal trawl survey index of sandeel abundance in the seabed sediments and an estimate of the abundance of sandeels in the water column determined by acoustic survey. The cruise thus had the following objectives: 1. To carry out an acoustic survey to determine an abundance estimate for sandeels in the in the water column. Three frequencies, 38, 120, and 200 kHz were used to aid species recognition. This acoustic survey also produced herring and sprat abundance estimates. Concentrations of fish were sampled using the pelagic trawl to determine species composition and length frequency distributions. Sub samples of the fish caught were weighed and had otoliths removed to establish length-weight relationships and age composition. 2. To carry out a demersal trawl survey to determine an abundance index for sandeels in the seabed sediment. This demersal trawl survey also produced abundance indices for herring and sprats, the two other main "prey" species, as well as abundance indices for the major piscivorous fish predators in the area, whiting, haddock and cod. At each trawl station, the length frequency of all fish species caught was determined. Sub-samples of sandeels, herring, sprats, cod, haddock, and whiting were weighed to determine length-weight relationships. Otoliths were removed from sandeels and clupeids to determine age composition. Sub-samples of the gadoid predators were retained and frozen for subsequent dietary and age composition analysis if required. 3. Simultaneously with the demersal trawl survey, hydrographic survey was undertaken using a Seabird 19 CTD sampler fitted with a fluorometer to dete |
| Ship | FRV Clupea |
| Departure Port | Fraserburgh, United Kingdom |
| Departure Date | 2007-06-01 |
| Arrival Port | Fraserburgh, United Kingdom |
| Arrival Date | 2007-06-14 |
| Principal Scientist(s) | Simon Greenstreet (Fisheries Research Services Aberdeen Marine Laboratory) |
| Responsible Organisation | Fisheries Research Services Aberdeen Marine Laboratory |
| Associated Project(s) | MF07N |
| IHB Sea Areas Visited | North Sea |
| Marsden Squares Visited | 181;3 |
| Work Area Description | Northwestern North Sea |
| Unable to lookup cruise bounds at this time | |
| Work Area Bounding Polygon | |
| Southern Limit | unknown |
| Northern Limit | unknown |
| Western Limit | unknown |
| Eastern Limit | unknown |
Cruise Inventory Datasets
| Physical oceanography | |
|---|---|
| Subsurface temperature and salinity measurements |
Quantity:
number of stations =
19
Description: hydrography |
| Surface measurements underway (T,S) |
Quantity:
number of stations =
19
Description: hydrography |
| Water bottle stations |
Quantity:
number of stations =
19
Description: water samples for chlorophyll analysis |
| Biology and fisheries | |
| Acoustic reflection on marine organisms. |
Quantity:
number of surveys =
3
Description: acoustic surveys |
| Birds |
Quantity:
number of surveys =
4
Description: 5 minute seabird surveys |
| Demersal fish |
Quantity:
number of stations =
19
Description: demersal trawling |
| Mammals and reptiles |
Quantity:
number of specimens =
13
Description: marine mammal sightings: minke whale, bottlenose dolphin, white-beacked dolphine, porpoise and grey seal |
| Other biological/fisheries measurement | Description: sandeel and clupeid otolith samples |
| Pelagic fish |
Quantity:
number of stations =
4
Description: pelagic trawl |
| Phytoplankton pigs (eg chlorophyll, fluorescence) |
Quantity:
number of stations =
19
Description: water samples for chlorophyll analysis |
| Geology and geophysics | |
| Single-beam echosounding |
Quantity:
number of surveys =
3
Description: acoustic surveys |
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 |
|---|---|---|
| 19 | CTD/STD cast |
Chlorophyll pigment concentrations in water bodies Electrical conductivity of the water column Reference numbers Salinity of the water column Temperature 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 | |
|---|---|---|---|---|
| 905561 | CTD/STD cast | 2007-06-08 06:40Z | 56° 27' N, 2° 7' W | Click for more |
| 905573 | CTD/STD cast | 2007-06-10 07:05Z | 56° 27' N, 1° 47' W | Click for more |
| 905585 | CTD/STD cast | 2007-06-10 09:10Z | 56° 17' N, 1° 49' W | Click for more |
| 905597 | CTD/STD cast | 2007-06-10 11:05Z | 56° 7' N, 1° 51' W | Click for more |
| 905604 | CTD/STD cast | 2007-06-10 12:55Z | 56° 2' N, 2° 1' W | Click for more |
| 905616 | CTD/STD cast | 2007-06-11 05:55Z | 56° 2' N, 1° 39' W | Click for more |
| 905628 | CTD/STD cast | 2007-06-11 08:10Z | 56° 1' N, 1° 21' W | Click for more |
| 905641 | CTD/STD cast | 2007-06-11 10:05Z | 56° 7' N, 1° 31' W | Click for more |
| 905653 | CTD/STD cast | 2007-06-11 12:20Z | 56° 16' N, 1° 31' W | Click for more |
| 905665 | CTD/STD cast | 2007-06-11 13:50Z | 56° 12' N, 1° 40' W | Click for more |
| 905677 | CTD/STD cast | 2007-06-12 04:45Z | 56° 7' N, 2° 30' W | Click for more |
| 905689 | CTD/STD cast | 2007-06-12 06:35Z | 56° 2' N, 2° 19' W | Click for more |
| 905690 | CTD/STD cast | 2007-06-12 08:25Z | 56° 7' N, 2° 9' W | Click for more |
| 905708 | CTD/STD cast | 2007-06-12 10:15Z | 56° 12' N, 2° 0' W | Click for more |
| 905721 | CTD/STD cast | 2007-06-12 12:20Z | 56° 17' N, 2° 11' W | Click for more |
| 905733 | CTD/STD cast | 2007-06-12 14:03Z | 56° 11' N, 2° 20' W | Click for more |
| 905745 | CTD/STD cast | 2007-06-13 05:40Z | 56° 21' N, 2° 22' W | Click for more |
| 905757 | CTD/STD cast | 2007-06-13 07:45Z | 56° 27' N, 2° 30' W | Click for more |
| 905769 | CTD/STD cast | 2007-06-13 10:45Z | 56° 22' N, 1° 57' W | Click for more |
Project Database
No data currently held for this cruise in the BODC Project Database
