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BODC Cruise Metadata Report for FRV Alba Na Mara (74NM) cruise 0508A

Introduction

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

Cruise Inventory Information

Long name FRV Alba Na Mara (74NM) cruise 0508A
Short name 0508A
Objectives and Narrative 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 determine spatial variation in water temperature, salinity and fluoroescence across the study area. Nineteen vertical dip stations were sampled.

4. Simultaneously with the acoustic survey, survey of seabirds at sea within the study area was undertaken using standard census methods. Protection of local breeding seabirds was one of the principal motives underpinning the sandeel fishery closure.

5. Whilst carrying out seabird at sea survey, all sightings of marine mammals (number of animals, species if possible, and their lo
Ship FRV Alba Na Mara
Departure Port Fraserburgh, United Kingdom
Departure Date 2008-06-11
Arrival Port Fraserburgh, United Kingdom
Arrival Date 2008-06-24
Principal Scientist(s) Simon Greenstreet (Fisheries Research Services Aberdeen Marine Laboratory)
Responsible Organisation Fisheries Research Services Aberdeen Marine Laboratory
Associated Project(s) AE11D
IHB Sea Areas Visited North Sea
Marsden Squares Visited 181;3
Work Area Description Firth of Forth
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

No information on datasets is currently available for this cruise

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
Concentration of suspended particulate material in the water column
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  
923997 CTD/STD cast 2008-06-18 06:02Z 56° 28' N, 1° 46' W Click for more
924000 CTD/STD cast 2008-06-18 06:41Z 56° 27' N, 1° 40' W Click for more
924012 CTD/STD cast 2008-06-18 07:29Z 56° 22' N, 1° 40' W Click for more
924024 CTD/STD cast 2008-06-18 08:20Z 56° 17' N, 1° 40' W Click for more
924036 CTD/STD cast 2008-06-18 09:05Z 56° 17' N, 1° 31' W Click for more
924048 CTD/STD cast 2008-06-18 10:43Z 56° 12' N, 1° 30' W Click for more
924061 CTD/STD cast 2008-06-18 11:36Z 56° 7' N, 1° 29' W Click for more
924073 CTD/STD cast 2008-06-18 13:39Z 56° 7' N, 1° 20' W Click for more
924085 CTD/STD cast 2008-06-19 03:14Z 56° 2' N, 1° 19' W Click for more
924097 CTD/STD cast 2008-06-19 04:58Z 56° 2' N, 1° 30' W Click for more
924104 CTD/STD cast 2008-06-19 05:45Z 56° 2' N, 1° 37' W Click for more
924116 CTD/STD cast 2008-06-19 07:30Z 56° 7' N, 1° 40' W Click for more
924128 CTD/STD cast 2008-06-19 08:06Z 56° 11' N, 1° 40' W Click for more
924141 CTD/STD cast 2008-06-19 10:36Z 56° 12' N, 1° 49' W Click for more
924153 CTD/STD cast 2008-06-20 03:52Z 56° 25' N, 2° 36' W Click for more
924165 CTD/STD cast 2008-06-20 04:22Z 56° 27' N, 2° 31' W Click for more
924177 CTD/STD cast 2008-06-20 05:44Z 56° 27' N, 2° 20' W Click for more
924189 CTD/STD cast 2008-06-20 06:29Z 56° 27' N, 2° 7' W Click for more
924190 CTD/STD cast 2008-06-20 08:00Z 56° 27' N, 2° 0' W Click for more
924208 CTD/STD cast 2008-06-20 08:50Z 56° 22' N, 2° 1' W Click for more
924221 CTD/STD cast 2008-06-20 10:13Z 56° 22' N, 1° 49' W Click for more
924233 CTD/STD cast 2008-06-20 10:59Z 56° 18' N, 1° 50' W Click for more
924245 CTD/STD cast 2008-06-20 12:47Z 56° 17' N, 2° 0' W Click for more
924257 CTD/STD cast 2008-06-20 13:30Z 56° 12' N, 2° 0' W Click for more
924269 CTD/STD cast 2008-06-20 15:05Z 56° 7' N, 2° 0' W Click for more
924270 CTD/STD cast 2008-06-21 03:09Z 56° 9' N, 1° 51' W Click for more
924282 CTD/STD cast 2008-06-21 05:06Z 56° 2' N, 1° 50' W Click for more
924294 CTD/STD cast 2008-06-21 05:55Z 56° 2' N, 1° 58' W Click for more
924301 CTD/STD cast 2008-06-21 07:24Z 56° 2' N, 2° 10' W Click for more
924313 CTD/STD cast 2008-06-21 08:02Z 56° 6' N, 2° 10' W Click for more
924325 CTD/STD cast 2008-06-21 09:28Z 56° 12' N, 2° 10' W Click for more
924337 CTD/STD cast 2008-06-21 10:08Z 56° 16' N, 2° 12' W Click for more
924349 CTD/STD cast 2008-06-21 12:00Z 56° 14' N, 2° 19' W Click for more
924350 CTD/STD cast 2008-06-22 05:38Z 56° 7' N, 2° 33' W Click for more
924362 CTD/STD cast 2008-06-22 07:11Z 56° 2' N, 2° 30' W Click for more
924374 CTD/STD cast 2008-06-22 07:50Z 56° 2' N, 2° 22' W Click for more
924386 CTD/STD cast 2008-06-22 09:27Z 56° 7' N, 2° 20' W Click for more
924398 CTD/STD cast 2008-06-22 10:46Z 56° 17' N, 2° 19' W Click for more
924405 CTD/STD cast 2008-06-22 11:59Z 56° 22' N, 2° 10' W Click for more
924417 CTD/STD cast 2008-06-22 12:50Z 56° 22' N, 2° 19' W Click for more
924429 CTD/STD cast 2008-06-22 14:25Z 56° 22' N, 2° 30' W Click for more
924430 CTD/STD cast 2008-06-23 07:16Z 56° 17' N, 2° 30' W Click for more
924442 CTD/STD cast 2008-06-23 08:04Z 56° 12' N, 2° 30' W Click for more
924454 CTD/STD cast 2008-06-23 09:31Z 56° 7' N, 2° 40' 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