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Metadata: Cemlyn Lagoon Soft Sediment Infauna Survey (2006 - 2012)
Abstract:
The aim of the EC Habitats Directive 92/43/EEC is to promote the maintenance of biodiversity by requiring Member States to take measures to maintain or restore natural habitats and wild species listed on the Annexes to the Directive at a favourable conservation status, introducing robust protection for those habitats and species of European importance. Special Areas of Conservation (SACs) are strictly protected sites designated under the Habitats Directive. In the UK coastal lagoons show a wide range of geographical and ecological variation; five main sub-types have been identified in the UK, on the basis of their physiography, as meeting the definition of the Annex I habitat type. These are graded from A to D. - A Outstanding examples of the feature in a European context. - B Excellent examples of the feature, significantly above the threshold for Sites of Special Scientific Interest (SSSI) notification but of somewhat lower value than grade A sites. - C Examples of the feature which are of at least national importance (i.e. usually above the threshold for SSSI notification on terrestrial sites) but not significantly above this. These features are not the primary reason for SACs being selected. - D Features of below SSSI quality occurring on SACs. These are non-qualifying features (“non-significant presence”), indicated by a letter D, but this is not a formal global grade. Cemlyn lagoon on the north coast of Anglesey, north Wales, is considered to be the best example of a saline coastal lagoon in Wales (Graded A) and forms part of the Cemlyn Bay SAC. The lagoon is separated from the sea by a shingle bank with a narrow channel at the western end, across which a sluice system was built in the 1930s. Seawater exchange occurs mainly through the sluice and by percolation through the shingle bank, although in extreme storms coinciding with spring tides waves break over the top of the shingle bank. Cemlyn lagoon supports a relatively diverse set of species, several of which are specific to lagoons, including the bryozoan Conopeum seurati, the lagoon cockle Cerastoderma glaucum and the lagoonal mud-snail Ventrosia ventrosa. Cemlyn lagoon is also the only site in Wales where the lagoonal isopod Idotea chelipes has been recorded. A number of uncommon plant species are found within the lagoon, including the brackish water-crowfoot Ranunculus baudotii and beaked tasselweed Ruppia maritima. The purpose of this data capture is to aid in the monitoring and condition assessment of this Annex I feature. This dataset is a collation of data from subtidal benthic soft sediment sampling carried out within Cemlyn lagoon.
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 | 8673 |
| 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. | Cemlyn Lagoon Soft Sediment Infauna Survey (2006 - 2012) |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2006-11 CCW Cemlyn Lagoon survey MRCCW30000000042, 2012 DRAFT CCW Cemlyn Lagoon Survey MRCCW30000000076, 2006 - 09 CCW Cemlyn Lagoon survey |
| 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_DS110464 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313130343634 |
| 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 | 2006-03-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-12-31 |
| 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'. | annually |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | The aim of the EC Habitats Directive 92/43/EEC is to promote the maintenance of biodiversity by requiring Member States to take measures to maintain or restore natural habitats and wild species listed on the Annexes to the Directive at a favourable conservation status, introducing robust protection for those habitats and species of European importance. Special Areas of Conservation (SACs) are strictly protected sites designated under the Habitats Directive. In the UK coastal lagoons show a wide range of geographical and ecological variation; five main sub-types have been identified in the UK, on the basis of their physiography, as meeting the definition of the Annex I habitat type. These are graded from A to D. - A Outstanding examples of the feature in a European context. - B Excellent examples of the feature, significantly above the threshold for Sites of Special Scientific Interest (SSSI) notification but of somewhat lower value than grade A sites. - C Examples of the feature which are of at least national importance (i.e. usually above the threshold for SSSI notification on terrestrial sites) but not significantly above this. These features are not the primary reason for SACs being selected. - D Features of below SSSI quality occurring on SACs. These are non-qualifying features (“non-significant presence”), indicated by a letter D, but this is not a formal global grade. Cemlyn lagoon on the north coast of Anglesey, north Wales, is considered to be the best example of a saline coastal lagoon in Wales (Graded A) and forms part of the Cemlyn Bay SAC. The lagoon is separated from the sea by a shingle bank with a narrow channel at the western end, across which a sluice system was built in the 1930s. Seawater exchange occurs mainly through the sluice and by percolation through the shingle bank, although in extreme storms coinciding with spring tides waves break over the top of the shingle bank. Cemlyn lagoon supports a relatively diverse set of species, several of which are specific to lagoons, including the bryozoan Conopeum seurati, the lagoon cockle Cerastoderma glaucum and the lagoonal mud-snail Ventrosia ventrosa. Cemlyn lagoon is also the only site in Wales where the lagoonal isopod Idotea chelipes has been recorded. A number of uncommon plant species are found within the lagoon, including the brackish water-crowfoot Ranunculus baudotii and beaked tasselweed Ruppia maritima. The purpose of this data capture is to aid in the monitoring and condition assessment of this Annex I feature. This dataset is a collation of data from subtidal benthic soft sediment sampling carried out within Cemlyn lagoon. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Data capture consisted of benthic invertebrates abundance records taken from samples collected using a mini-Eckman grab (0.025m2) and granulometry readings. All samples Benthic invertebrate samples are sieved over a 0.5 mm mesh. Supporting determinants consist of National Grid References (NGR), recorded using hand-help GPS; salinity and temperature readings, which are continuously recorded at site 2 using a data logger. Infaunal sampling is carried out annually in December. Salinity and temperature are recorded continuously. Benthic invertebrate samples are processed by laboratories that are members of the National Marine Biological Analytical Quality Control (NMBAQC) scheme and random samples from each survey are also selected for audit by Unicomarine. |
| 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 | Temperature | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | marine monitoring (see also marine surveys) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | salinity | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | sediment sample | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | benthic communities | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | lagoons | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | benthic species | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | marine sediments (coastal sediments) (intertidal sediments) (subtidal sediments) | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | sediment infauna | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos generic abundance | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Salinity of the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Temperature of the water column | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.41544536 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.4978824 |
| South | The southern-most limit of the data resource in decimal degrees | 53.40322226 |
| West | The western-most limit of the data resource in decimal degrees | -4.5177917 |
| Regional sea | SIR YNYS MON - ISLE OF ANGLESEY | |
| 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 | CCW Marine Monitoring Team | |
| Delivery point | Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW | |
| enquiries@naturalresourceswales.gov.uk | ||
| URL | http://naturalresourceswales.gov.uk/splash?orig=/ | |
| 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 2008 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 | Database |
| 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. | 2012-12-31 |
| 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 |
| Metadata parent | NRW_DS116511 | |