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Metadata: Cockle and Mussel Stock (bird food) Surveys in the Burry Inlet 2005 - 2009
Abstract:
Special Protection Areas (SPAs) are strictly protected sites classified in accordance with Article 4 of the EC Birds Directive. They are classified for rare and vulnerable birds (as listed on Annex I of the Directive), and for regularly occurring migratory species. The Burry Inlet Special Protection Area (SPA) supports nationally and internationally important populations of wildfowl and waders. It also supports an important cockle fishery. The removal of cockles and the associated disturbance caused by fishing, needs to be balanced with bird food requirements. The aim of the project is to assess the food requirements of wading birds that over-winter in the Burry Inlet Special Protection Areas (SPAs). Data Collection is repeated annually. In the future this data may be combined with data gathered on bird foraging behaviour, together with site specific data on bird numbers and used in an individual behaviour based model to predict the food requirements of a bird population.
Data holder:
Natural Resources Wales (NRW)
Click on the red button for resource contact details:
- Click on the red button for resource contact details
| Other details | ||
| Internal code | Internally assigned metadata identifier | 8592 |
| 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. | Cockle and Mussel Stock (bird food) Surveys in the Burry Inlet 2005 - 2009 |
| 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. | NRW_DS108873 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313038383733 |
| 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 | 2005-09-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2009-10-31 |
| 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'. | annually |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Special Protection Areas (SPAs) are strictly protected sites classified in accordance with Article 4 of the EC Birds Directive. They are classified for rare and vulnerable birds (as listed on Annex I of the Directive), and for regularly occurring migratory species. The Burry Inlet Special Protection Area (SPA) supports nationally and internationally important populations of wildfowl and waders. It also supports an important cockle fishery. The removal of cockles and the associated disturbance caused by fishing, needs to be balanced with bird food requirements. The aim of the project is to assess the food requirements of wading birds that over-winter in the Burry Inlet Special Protection Areas (SPAs). Data Collection is repeated annually. In the future this data may be combined with data gathered on bird foraging behaviour, together with site specific data on bird numbers and used in an individual behaviour based model to predict the food requirements of a bird population. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The surveys were coordinated by Coastal Assessment, Liaison and Monitoring, who sub-contracted individuals to make up the field survey team. Over 400 cockle survey stations (on a grid system) were surveyed, using GPS, 0.1m2 quadrats and a sieve of 2 mm mesh. Cockles retained in the sieve were measured and counted; enabling the production of cockle density maps and estimates of the total cockle populations of each area. Mussel beds in the Inlet were also surveyed in a similar way, and all mussels over 10 mm length in each 0.1m2 quadrat were measured and counted. This enabled the estimation of the total mussel populations of each bed. From 2007, samples of the shellfish were analysed to measure wet weight, ash free dry weight and shell length; providing sufficient data to determine length: weight relationships and thereby calculate estimates of total weight of shellfish in the Inlet. The methodology for the data collection is based on West et al. (2004). The dataset builds on work initiated in 2004 as part of a wider assessment of Cockle and Mussel Stocks across three sites in Wales (The Dee Estuary, Traeth Lafan, Gwynedd and the Burry Inlet). |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Data was also collected in 2004 as part of a wider project to look at bird food stocks in several estuaries across Wales. This is detailed in a separate metadata entry (115678: Low Tide Wetland Birds Surveys (WeBS) Counts and Feeding activity of Oystercatch and Knot in the Burry Inlet SPA and Carmarthen Bay SAC (2013-2014)). |
| Related keywords | ||
| Keyword | 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 | cockle fishery | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | unionidae | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | cockling | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Burry Inlet | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | mussel beds | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | cockles | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | cockle beds | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | cerastoderma edule (previously known as cardium edule) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | waders (see also specific species) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | mussel crumble | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | mussels | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Shellfish abundance and biomass in water bodies | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 51.68778036 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.08259526 |
| South | The southern-most limit of the data resource in decimal degrees | 51.62295467 |
| West | The western-most limit of the data resource in decimal degrees | -4.26116823 |
| Regional sea | benthic boundary layer | |
| Wales (WLS) | ||
| 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 | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| 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 | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Various contractors | |
| Delivery point | See Natural Resources Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresourceswales.gov.uk/splash?orig=/ | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Coastal Assessment Liaison and Monitoring (CALM) | |
| Delivery point | Ti Cara, Point Lane, Cosheston, Pembrokeshire, SA72 4UN, Wales | |
| jon@ticara.co.uk | ||
| URL | <!--No website --> | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Natural Resources Wales (NRW) | |
| Delivery point | Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresources.wales/?lang=en | |
| 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 | This states any limitations on access to the data. Multiple occurences are allowed here. One entry shall be from the INSPIRE Metadata registry and the other free text should be part of the resource `Have specific limitations`. | There are no access restrictions to this data. NRW may release, publish or disseminate it freely. |
| no limitations | ||
| 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 | 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. | © CNC/NRW 2009. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source. |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Documents |
| 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. | 2009-01-31 |
| 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. | 2026-03-03 |
| 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 | 3.1.2 |