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Metadata: Reduce Whiting By-Catch in the SW Trawl Squid & Cuttlefish Fishery 2016/17 - Fisheries Science Partnership
Abstract:
Ten days of sea trials comprising 21 tows were successfully completed on board the commercial fishing vessel ‘Sue Ellen’ (BM211) in Lyme Bay in January 2017 allowing comparison of the catches in a modified box trawl fitted with a four-panel extension and cod end with those of a standard two-panel box trawl. The aim of this study was to try and reduce the catch of unwanted whiting without loss of squid or cuttlefish. The cuttlefish season had finished for the inshore trawlers at the time of this study, so the emphasis was on retaining squid.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Other details | ||
Internal code | Internally assigned metadata identifier | 10015 |
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. | Reduce Whiting By-Catch in the SW Trawl Squid & Cuttlefish Fishery 2016/17 - Fisheries Science Partnership |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | FSP Reduce Whiting By-Catch in the SW Trawl Squid & Cuttlefish Fishery |
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. | CEFAS6a64e418-0be4-45a0-9bf6-a17c9aa44cb0 |
Resource Identifier | This is the code assigned by the data owner. | CEFAS18556 |
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 | 2017-01-09 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2017-01-24 |
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. | Ten days of sea trials comprising 21 tows were successfully completed on board the commercial fishing vessel ‘Sue Ellen’ (BM211) in Lyme Bay in January 2017 allowing comparison of the catches in a modified box trawl fitted with a four-panel extension and cod end with those of a standard two-panel box trawl. The aim of this study was to try and reduce the catch of unwanted whiting without loss of squid or cuttlefish. The cuttlefish season had finished for the inshore trawlers at the time of this study, so the emphasis was on retaining squid. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The primary objective of this project was to develop trawl modifications that reduce unwanted whiting catches while maintaining catches of commercial squid and cuttlefish in the SW otter trawl fishery. The stocks of whiting in the Western English Channel are believed to be in good condition but whiting is the most likely choke species for vessels operating from some SW ports, including Plymouth, Brixham and Looe. Many vessel operators, however, were not overly aware of this because the main target species, such as lemon sole, squid and cuttlefish, are non-quota. Whiting is a by-catch, landing prices for which are below those received for other species, and quota uptake for 2015 and 2016 was only about 50%. There are two well-known fisheries for squid in UK coastal waters – one off Lundy Island and another in the Moray Firth. In contrast to these fisheries, however, the squid fishery in Lyme Bay is highly mixed and requires a minimum cod end mesh size of 80 mm stretched mesh. In addition, the strength, distribution and seasonality of the squid fishery is quite unpredictable, hence squid tends to be an important by-catch of the more reliable cuttlefish and lemon sole fisheries. On board observations of catches during the autumn fishery for cuttlefish and squid in Lyme Bay in the years 2013-15 indicate that whiting accounted for up to 29% of catches by weight (Santos, 2016). Undersize whiting made up only a small proportion (3%) of these, and were discarded. Nearly a quarter, however, of fish larger than the minimum landing size were discarded. Lemon sole is a very important catch component of the inshore trawler fleet and considerable numbers were starting to show up on the inner grounds of Lyme Bay as these gear trials got underway. |
Related keywords | ||
Keyword | 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 | 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 | 51.5 |
South | The southern-most limit of the data resource in decimal degrees | 47 |
West | The western-most limit of the data resource in decimal degrees | -10 |
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/18556 |
Locator name | Name of the web resource | Cefas Data Portal |
Dataset constraints | ||
20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
20.2 Limitations on Public Access - Other constraints | noLimitations | |
21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | 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. | 2017-05-18 |
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. | 2017-05-18 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-14 |
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 |