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BODC Cruise Metadata Report for FRV Clupea (74CU) cruise 0906C Part 1

Introduction

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

Cruise Inventory Information

Long name FRV Clupea (74CU) cruise 0906C Part 1
Short name 0906C Part 1
Objectives and Narrative Objectives

1. To investigate the distribution of juvenile herring and sprat through the North and South Minch through bottom, or near-bottom trawling. Species composition and length-frequency distributions of all the fish caught will be determined. Sub-samples will be weighed and otolithed to establish age-length and length-weight relationships. Herring samples will be analysed for sex, maturity, Ichthyophonus and Cryptocotyle lingua infection. Sprat samples will be analysed for Lernaeenicus sprattae, L. encrasicoli and Cryptocotyle lingua infection.
2. To collect stomach samples from both herring and sprat to compare summer feeding patterns to the winter patterns to be established from previously collected samples.
3. To collect viscera samples from herring for possible stock ID.

Narrative

Staff joined the Clupea in Fraserburgh on Monday 3 July 2006, from where she sailed at 1130. Clupea proceeded to sail round to the west coast, anchoring overnight in Loch Eriboll. Clupea commenced fishing on the morning of 4 July off Cape Wrath. Trawling positions for each day's fishing were determined, on a daily basis, in consultation with the skipper and from previously documented demersal tows in the area. At each station in Part 1 a bottom trawl of 30 minute duration using the BT158 was carried out, along with an oblique plankton tow, CTD and vertical plankton net dip. The suitability of the ground for towing with the PT154 net was established at each station. The EK500 unit ran throughout each day to enable comparison of marks at station fished and fish caught. Clupea continued to work across and down through the North Minch and find a suitable anchorage each night until the evening of 6 July when she docked in Gairloch to take on fresh water supplies. Clupea then proceeded to work down through Raasay Sound and into the Sound of Sleat on 7 July and then headed for work around the eastern side of the South Minch. Work was restricted to the eastern portion of the South Minch until the half landing due to weather restrictions, working around Coll and Tiree, Mull, Colonsay, Rhum, Eigg, Skye, off Mallaig and into Loch Nevis.

The CTD data could not be uploaded to a PC due to a problem with communication with the SEARAM unit that was unable to be rectified. Unfortunately, some of the data from the final CTD deployments were lost.

A total of 26 demersal tows, 24 double oblique and 24 vertical plankton tows and 26 CTD deployments were performed.

On the evening of 12 July, after completing Part 1 of the survey, Clupea steamed to Mallaig where Emma Hatfield handed over to Steve Hay as SIC. Emma Hatfield then left the ship and used the laboratory car to return to Aberdeen.
Ship FRV Clupea
Departure Port Fraserburgh, United Kingdom
Departure Date 2006-07-03
Arrival Port Mallaig, United Kingdom
Arrival Date 2006-07-12
Principal Scientist(s) Emma Hatfield (Fisheries Research Services Aberdeen Marine Laboratory)
Responsible Organisation Fisheries Research Services Aberdeen Marine Laboratory
Associated Project(s) MFO1Ta
IHB Sea Areas Visited Inner Seas off the West Coast of Scotland
Marsden Squares Visited 181;4
Work Area Description Off Cape Wrath, North Minch, Raasay Sound, Sound of Sleat, eastern side of the South Minch, Coll and Tiree, Mull Colonsay, Rhum, Eigg, Skye, off Mallaif, and Loch Nevis
Work Area Bounding Polygon 55N,10W; 60N,10W; 60N,5W; 55N,5W; 55N,10W
Southern Limit 55N
Northern Limit 60N
Western Limit 10W
Eastern Limit 5W

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of deployments = 26
Description: CTD deployments  
Biology and fisheries  
Demersal fish Quantity: activity duration in days = 9
Description: The EK500 unit ran throughout each day to enable comparison of marks at station fished and fish caught.  
Demersal fish Quantity: number of measurements = 26
Description: 26 Demersal tows. A bottom trawl of 30 minute duration using the BT158 was carried out at each station  
Seston Quantity: number of measurements = 48
Description: 24 double oblique plankton tows and 24 vertical plankton net dips.  

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
16 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
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
18 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Electrical conductivity of the water column
Raw light meter output
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Visible waveband radiance and irradiance measurements in the water column

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

Full List

BODC Reference Instrument Description Date/Time Location  
723368 CTD/STD cast 2006-07-04 12:08Z 58° 36' N, 5° 4' W Click for more
723381 CTD/STD cast 2006-07-04 15:06Z 58° 28' N, 5° 25' W Click for more
723393 CTD/STD cast 2006-07-05 08:24Z 58° 18' N, 6° 10' W Click for more
723400 CTD/STD cast 2006-07-05 10:28Z 58° 16' N, 6° 0' W Click for more
723412 CTD/STD cast 2006-07-05 12:58Z 58° 9' N, 5° 54' W Click for more
723424 CTD/STD cast 2006-07-05 15:29Z 58° 3' N, 5° 48' W Click for more
723436 CTD/STD cast 2006-07-06 09:33Z 57° 51' N, 5° 51' W Click for more
723448 CTD/STD cast 2006-07-06 12:18Z 57° 51' N, 6° 6' W Click for more
723461 CTD/STD cast 2006-07-06 14:37Z 57° 44' N, 6° 0' W Click for more
723473 CTD/STD cast 2006-07-06 16:31Z 57° 43' N, 5° 54' W Click for more
723485 CTD/STD cast 2006-07-07 09:36Z 57° 38' N, 6° 1' W Click for more
723497 CTD/STD cast 2006-07-07 11:42Z 57° 33' N, 6° 5' W Click for more
723504 CTD/STD cast 2006-07-07 17:34Z 57° 2' N, 5° 47' W Click for more
723516 CTD/STD cast 2006-07-08 12:49Z 56° 43' N, 6° 28' W Click for more
723528 CTD/STD cast 2006-07-08 15:21Z 56° 49' N, 6° 40' W Click for more
723541 CTD/STD cast 2006-07-09 11:23Z 56° 15' N, 5° 55' W Click for more
723553 CTD/STD cast 2006-07-14 10:01Z 56° 54' N, 6° 25' W Click for more
723565 CTD/STD cast 2006-07-14 12:09Z 56° 42' N, 6° 30' W Click for more
723577 CTD/STD cast 2006-07-15 08:12Z 56° 17' N, 5° 55' W Click for more
723589 CTD/STD cast 2006-07-15 09:36Z 56° 15' N, 5° 56' W Click for more
723590 CTD/STD cast 2006-07-15 11:59Z 56° 10' N, 6° 5' W Click for more
723608 CTD/STD cast 2006-07-15 13:47Z 56° 7' N, 6° 19' W Click for more
723621 CTD/STD cast 2006-07-15 17:09Z 56° 25' N, 6° 39' W Click for more
723633 CTD/STD cast 2006-07-16 10:55Z 56° 57' N, 6° 5' W Click for more
723645 CTD/STD cast 2006-07-16 11:44Z 56° 57' N, 5° 57' W Click for more
723657 CTD/STD cast 2006-07-16 17:51Z 57° 28' N, 6° 6' W Click for more
723669 CTD/STD cast 2006-07-17 08:58Z 57° 40' N, 5° 59' W Click for more
723670 CTD/STD cast 2006-07-17 11:40Z 57° 53' N, 6° 7' W Click for more
723682 CTD/STD cast 2006-07-17 13:28Z 58° 4' N, 5° 43' W Click for more
723694 CTD/STD cast 2006-07-17 17:08Z 58° 5' N, 6° 10' W Click for more
723701 CTD/STD cast 2006-07-18 08:41Z 58° 16' N, 6° 0' W Click for more
723713 CTD/STD cast 2006-07-18 10:48Z 58° 27' N, 5° 51' W Click for more
723725 CTD/STD cast 2006-07-18 13:11Z 58° 28' N, 5° 30' W Click for more
723737 CTD/STD cast 2006-07-18 14:32Z 58° 29' N, 5° 22' 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