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Metadata: 0402H-HERAS West coast herring acoustic survey- MFV Quantus
Abstract:
Daily folders (20) of Simrad (.ek5 format) data. 20 Echoview format (EV) format analysis files. Excel biological data for 49 pelagic hauls. Continuous AGDS data. Objectives 1. To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and west of Scotland (ICES area Vla(N) as part of the ICES International North Sea Herring Acoustic Survey). 2. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection.
Data holder:
Scottish Government (Marine Scotland)
Use constraints:
no limitations to public access
Other details | ||
Internal code | Internally assigned metadata identifier | 6226 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 0402H-HERAS West coast herring acoustic survey- MFV Quantus |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | herring, acoustic survey, west coast, MFV Quantus |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | Marine_Scotland_FishDAC_1741 |
Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_1741 |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2002-07-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2002-07-21 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 55000.00 |
Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | Not Planned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Daily folders (20) of Simrad (.ek5 format) data. 20 Echoview format (EV) format analysis files. Excel biological data for 49 pelagic hauls. Continuous AGDS data. Objectives 1. To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and west of Scotland (ICES area Vla(N) as part of the ICES International North Sea Herring Acoustic Survey). 2. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | All gear was transported to Peterhead on 28 June and installation was complete by the morning of 1 July. Scientific staff joined the vessel at 1100 hours on 1 July and the vessel departed at 1300 hours. A small meeting was held with all scientists, and crew taking a navigational watch, to explain the objectives of the survey and to describe general operating procedures. The vessel then proceeded to Loch Eriboll where calibration of the three transducers was carried out starting at 0500 hours on 2 July. The survey commenced in the North Minch at 1900 hours on 2 July. Zig-zag transects at a spacing of 15 nautical miles (n mi) were adopted in the Minch. On reaching the southern limit of the Minch, transects progressed northwards along lines of latitude, at spacings of 15, 7.5 or 3.75 n mi. Transect spacing was based on the results of previous surveys and transects were placed relative to ICES rectangles. Transects extended as far as the shelf edge (250 m contour) to the west, and as far as safely possible to the east, on approaching the coast. A half landing took place on 12 July in Ullapool for the exchange of personnel. The 38 kHz transducer was calibrated in Loch Broom prior to landing. The vessel resumed surveying at 1800 hours on 13 July. North of the Hebrides, transects extended from the shelf edge to longitude 2'West, progressing northwards as far as 60'04'North. The survey was completed on 20 July at 2015 hours. A second calibration was carried out at 0800 hours in Scapa Flow on 21 July. The vessel returned to Peterhead on the evening of 21 July. Scientists and gear were unloaded the following morning and returned to Aberdeen. Results The survey was completed successfully, with no time lost due to weather and no damage to the acoustic gear. One of the fishing nets was tom in one panel along the belly. The total mileage surveyed was approximately 2500 n mi with 1083 acoustic log intervals recorded. Three successful calibrations were carried out, which gave consistent results to within 0.02 dB. Fishing exercises were generally successful; 49 trawls were taken, of which 40 contained herring. In addition to length frequency data, a total of 2769 herring were sampled for weight, sex, maturity and otoliths. Some digital photographs of herring in various maturity stages were taken for submission to the ICES PGHERS. Preliminary indications are that more fish were detected than usual. Large schools of herring were detected all along the west of the Hebrides between the 100 and 200 m contours. Further concentrations were detected at Gallan Head and west of Papa Bank (north west of Orkney). However, very few herring were detected in the Minch and, surprisingly, virtually none were detected off Barra Head. A full stock estimate and survey report will be prepared shortly. The MFV Quantus proved to be an excellent vessel for the survey. She was well equipped and her crew were experienced, competent and helpful, and also very proficient in fishing operations. • The skipper, Neil MacGronald, deserves special praise for his expertise and commitment. The success of the cruise can also be ascribed to the expertise and hard work put in by the scientific crew. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biota composition | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish abundance in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish biomass in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish morphology, age and physiology | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 60 |
East | The eastern-most limit of the data resource in decimal degrees | -4 |
South | The southern-most limit of the data resource in decimal degrees | 55.5 |
West | The western-most limit of the data resource in decimal degrees | -10 |
Regional sea | 40E0 | |
41E0 | ||
42E0 | ||
43E0 | ||
44E0 | ||
45E0 | ||
40E1 | ||
41E1 | ||
42E1 | ||
43E1 | ||
44E1 | ||
45E1 | ||
46E1 | ||
40E2 | ||
41E2 | ||
42E2 | ||
43E2 | ||
44E2 | ||
45E2 | ||
46E2 | ||
41E3 | ||
42E3 | ||
43E3 | ||
44E3 | ||
45E3 | ||
46E3 | ||
47E3 | ||
44E4 | ||
45E4 | ||
46E4 | ||
47E4 | ||
46E5 | ||
47E5 | ||
48E5 | ||
Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Scottish Government (Marine Scotland) | |
Phone | +44 (0)300 244 4000 | |
Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
Postal code | EH6 6QQ | |
City | Edinburgh | |
Country | United Kingdom | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | https://www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/search/ |
Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | Reference info #0 |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | otherRestrictions | |
20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | no limitations to public access |
21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Open Government License (http://www.nationalarchives.gov.uk/doc/open-government-licence/) |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2016-05-05 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-21 |
Metadata date | The date when the content of this metadata record was last updated. | 2016-05-19 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.7 |