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Metadata: Length and age data for North Sea Saithe and Barents Sea Cod collected through a self-sampling program in English fisheries 2023 - Fisheries Industry Science Partnerships
Abstract:
Two participating vessels collected information on catches and biological data including length data and otoliths from North Sea Saithe and Barents sea cod, between March 2023 and February 2024. This work was carried out as part of the Fisheries Industry Science Partnerships (FISP). This project was led by the fishing industry, in partnership with Cefas. This project aimed to set up a cost-effective continuous data collection programme for the industry to collect robust biological scientific data on national fisheries that are not covered by the current national sampling programmes, with the long-term aim to feed into the ICES stock assessment. This project presented an opportunity to engage the industry in the collection of biological samples from areas logistically difficult to sample routinely. The data shown includes summary catches of the target species (saithe and cod) in each trip and the length collected for those species, in each haul.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 9007 |
| 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. | Length and age data for North Sea Saithe and Barents Sea Cod collected through a self-sampling program in English fisheries 2023 - Fisheries Industry Science Partnerships |
| 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. | CEFAS066054f5-f6e3-4e1d-bdba-56da63a2584c |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS22004 |
| 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 | 2023-03-15 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2024-02-01 |
| 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. | Two participating vessels collected information on catches and biological data including length data and otoliths from North Sea Saithe and Barents sea cod, between March 2023 and February 2024. This work was carried out as part of the Fisheries Industry Science Partnerships (FISP). This project was led by the fishing industry, in partnership with Cefas. This project aimed to set up a cost-effective continuous data collection programme for the industry to collect robust biological scientific data on national fisheries that are not covered by the current national sampling programmes, with the long-term aim to feed into the ICES stock assessment. This project presented an opportunity to engage the industry in the collection of biological samples from areas logistically difficult to sample routinely. The data shown includes summary catches of the target species (saithe and cod) in each trip and the length collected for those species, in each haul. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The crew of the two participating vessels collected individual length data and otoliths from North Sea Saithe and Barents sea cod. All the sampling equipment was provided to each vessel (i.e. measuring boards, otoliths trays and envelops, sampling sheets). Cefas Senior at sea observer provided the necessary training to vessels and crew to carry out the sampling. Training included how to execute the data collection (record length, collect otoliths, muscle and fin clips from different species and how to store them); how to sub-sample from different components of the catch when required; familiarisation of different measuring protocols for different species. The sampling protocols and procedures followed Cefas data collection standards and were adapted to each participating vessel, according to their layout, crew availability, and the way the catch is processed onboard. Length data was collected in every trip during the duration of the project. The data was transmitted to Cefas through different means: photographs of the measuring boards were sent electronically. Haul information, length sheets and otoliths were sent via post. The data was then collated, checked and stored onto Cefas database. Data was analysed for its representativeness of the wider fleet, potential bias and variability. Different methods for data validation and quality assurance (QA) were considered for each participating vessel due to way they operate onboard, how they process their catches and where and how they land, and their feasibility explored. The length data collected by the participating vessels were assessed for its quality, using a Cefas observer onboard and using data collected independently by the Marine Directorate of the Scottish Government (MD). The length distributions from the different sources (self-sampling, Observer and MD sampling programmes) showed that, generally, the length distribution collected by the self-sampling programmes are comparable, indicating that the industry has the capability to collect data that is representative of the wider fleet . The data also indicated that the sampling had a good spatial and temporal coverage. This project successfully demonstrated that industry-led data collection can provide high quality data, representative of the fleet, with high spatial and temporal resolution, and with low associated costs. However, future refinements are necessary to streamline and optimize the self-sampling to reduce the workload of the skippers and crew, whilst ensuring high data quality standards. A future incorporation of self-sampling data into stock assessment processes would require developing a robust process for raising the sampling data to haul, trip and vessel levels and protocols to integrate these data with data from other sampling programme(s). Although this was achieved during this project, lessons learnt allowed the identification of practical issues that would need to be addressed to ensure robust estimates and its incorporation into stock assessments. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fisheries |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Other biological measurements | |
| 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 | Species distribution | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Unknown | |
| 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 | data.gov.uk | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 61 |
| East | The eastern-most limit of the data resource in decimal degrees | 9 |
| South | The southern-most limit of the data resource in decimal degrees | 51 |
| 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 | |
| data.manager@cefas.co.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 | |
| data.manager@cefas.co.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 | |
| data.manager@cefas.co.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 | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Department for Environment, Food and Rural Affairs (DEFRA) | |
| defra.helpline@defra.gov.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/22004 |
| 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 | INSPIRE_Directive_Article13_1e | |
| 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/iso/19139/resources/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. | 2024-08-29 |
| Date of last revision | The most recent date that the resource was revised. | 2024-09-03 |
| Date of creation | The date that the resource was created. | 2024-08-02 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2024-09-03 |
| 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 |