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Fisheries Science Partnership Programme 9, carried out in December 2004. The Programme was set up to investigate the extent to which a sieve net, incorporated into an industrial fishing trawl, could reduce the by-catch of whitefish whilst retaining sufficient catches of the target species Norway pout (*Trisopterus esmarkii*) in the northern North Sea. Sieve nets (also known as veil nets) are curved cone-shaped funnels of netting traditionally fitted to the inside of beam trawls used for brown shrimps, to reduce the by-catch of unwanted fish.
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Other details | ||
Internal code | Internally assigned metadata identifier | 9388 |
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. | North Sea pout bycatch mitigation 2004/05 - Fisheries Science Partnership |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | FSP North Sea pout bycatch mitigation |
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. | CEFAS21850be8-dfd9-46bb-9c4b-189579135e5c |
Resource Identifier | This is the code assigned by the data owner. | CEFAS18231 |
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 | 2004-12-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2004-12-31 |
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'. | notPlanned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Fisheries Science Partnership Programme 9, carried out in December 2004. The Programme was set up to investigate the extent to which a sieve net, incorporated into an industrial fishing trawl, could reduce the by-catch of whitefish whilst retaining sufficient catches of the target species Norway pout (*Trisopterus esmarkii*) in the northern North Sea. Sieve nets (also known as veil nets) are curved cone-shaped funnels of netting traditionally fitted to the inside of beam trawls used for brown shrimps, to reduce the by-catch of unwanted fish. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The fishing grounds chosen for this project were in the northern North Sea, in and around the ‘Pout box’, on the known commercial fishing grounds for Norway pout. The trials were conducted throughout a continuous two-week period in December 2004, traditionally a peak period for landings from this fishery. The commercial fishing vessel chartered for this project was the 45-metre stern ramp freezer trawler FV Swanella, H 1065. Two types of small meshed demersal trawls were used during the trials: a) Industrial trawl. A commercial design used for industrial fishing, supplied by a Danish trawl maker was initially used during the trials. This trawl was limited to use on soft fishing grounds due to its light construction and ground-gear. b) Modified whitefish trawl. A whitefish trawl was fitted with a 20mm cod end liner. This trawl was of a more substantial construction than the industrial trawl, with heavier ground gear, and could therefore be deployed over a wider terrain than the industrial trawl. The sieve net was constructed from 70mm (full mesh) diamond mesh polyethylene material (1.5mm diameter). Various minor adjustments were made to the sieve net throughout the course of the trials in an attempt to improve its performance. Both the industrial trawl and the whitefish trawl with the 20mm liner were repeatedly tested both with and without the sieve net in paired alternate hauls. In total, 37 hauls were made during the course of the trials, six of which were invalid due to fouled or damaged gear. The haul durations varied between 110 - 200 minutes (average 142 min) in depths ranging from 120 – 240 metres (average 154 m). The average towing speed was 3.9 knots (over the ground) and the choice of haul direction was made regardless of tidal flow. Fishing was conducted across, with and against the tide. Paired hauls were used to compare the catches in the trawl with and without a sieve net fitted. In each comparison the two tows with the different net configurations were made one after the other, over the same ground track and for the same duration as far as was practicable. . |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biota abundance, biomass and diversity |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Water column | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 60.75 |
East | The eastern-most limit of the data resource in decimal degrees | 2 |
South | The southern-most limit of the data resource in decimal degrees | 56 |
West | The western-most limit of the data resource in decimal degrees | -4.5 |
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 | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
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 | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
Role | The owner is the person or organisation that owns the resource. | owner |
Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Role | The owner is the person or organisation that owns the resource. | owner |
Organisation name | Department for Environment, Food and Rural Affairs (DEFRA) | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/18231 |
Locator name | Name of the web resource | Cefas Data Portal |
Dataset constraints | ||
20.1 Limitations on Public Access - Access constraints | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | otherRestrictions |
20.2 Limitations on Public Access - Other constraints | https://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/ | |
21.1 Conditions for Access and Use - Use constraints | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | otherRestrictions |
21.2 Conditions for Access and Use - Other constraints | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_RestrictionCode | |
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. | 2016-11-14 |
Date of last revision | The most recent date that the resource was revised. | 2019-10-29 |
Date of creation | The date that the resource was created. | 2016-11-11 |
Metadata date | The date when the content of this metadata record was last updated. | 2019-10-29 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.1 |
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