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Metadata: Crab and Lobster Fisheries in Scotland: Results of Stock Assessments 2016-2019
Abstract:
This report presents the results of Scottish regional brown crab (Cancer pagurus), velvet crab (Necora puber) and lobster (Homarus gammarus) stock assessments carried out by Marine Scotland Science (MSS) for the period 2016-2019.
Data holder:
Scottish Government (Marine Scotland)
Use constraints:
no limitations to public access
| Other details | ||
| Internal code | Internally assigned metadata identifier | 3995 |
| 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. | Crab and Lobster Fisheries in Scotland: Results of Stock Assessments 2016-2019 |
| 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_12451 |
| Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_12451 |
| 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 | 2016-01-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2023-03-20 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 200.00 |
| 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. | This report presents the results of Scottish regional brown crab (Cancer pagurus), velvet crab (Necora puber) and lobster (Homarus gammarus) stock assessments carried out by Marine Scotland Science (MSS) for the period 2016-2019. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The Scottish creel fisheries are long established and tend to be mixed species fisheries with brown crab, velvet crab and lobster as the main target species. The importance of each species varies regionally and in relation to season and market demand. The landings of the combined fishery into Scotland in 2020 were 9,000 tonnes with a first-sale value of £31M. This report presents the results of Scottish regional brown crab (Cancer pagurus), velvet crab (Necora puber) and lobster (Homarus gammarus) stock assessments carried out by Marine Scotland Science (MSS) based on length cohort analyses (LCAs) applied to commercial length frequency data for the period 2016-19. The stock assessments presented are conducted on a regional basis for the crab and lobster management areas in Scottish waters, with males and females assessed separately. The methodologies used include length-based methods, size indicators and analysis of survey data, providing stock status for stocks with available data. Analysis of trawl and dredge survey data for brown crab in the east and west coast indicates that abundance and recruitment (the number of young crabs entering the adult population annually) show a general increase from 2008 until the 2013-2016 period and a decline in recent years. The decline in survey catch rates coincides with a period a declining brown crab landings from 2016. There are no survey data available for velvet crab and European lobsters. The stock assessment results in this report for the three species are based on estimates of fishing mortality in relation to a reference point for each stock, to infer whether or not a stock is fished above the level that would in theory result in maximum sustainable yield (in the long term). The results of assessments for the period 2016-19 indicated that in the majority of the assessment areas, brown crab, velvet crab and lobster in Scotland were fished close to or above fishery reference points. To ensure sustainability of these fisheries, it is recommended that effort/fishing mortality should be reduced in those stocks for which fishing mortality is estimated to be above the sustainable fishing mortality (FMSY). |
| 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 | Fish and shellfish catch statistics | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fishery characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fishing effort | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Shellfish abundance and biomass in water bodies | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Commercial fish and shellfish populations are healthy | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 61.17856 |
| East | The eastern-most limit of the data resource in decimal degrees | 0.205078 |
| South | The southern-most limit of the data resource in decimal degrees | 55.04481 |
| West | The western-most limit of the data resource in decimal degrees | -9.111328 |
| 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 | |
| marinescotland@gov.scot | ||
| 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 | |
| marinescotland@gov.scot | ||
| 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 | |
| marinescotland@gov.scot | ||
| 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 | |
| marinescotland@gov.scot | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Marine Scotland | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://dx.doi.org/10.7489/12451-1 |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | DOI:https://dx.doi.org/10.7489/12451-1 |
| 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. | 2023-03-20 |
| 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. | 2023-03-10 |
| 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 |