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Metadata: Intertidal Monitoring of Muddy Gravel, Sediments and Rocky Shore in Pen Llyn a'r Sarnau Special Area of Conservation (SAC) 2008
Abstract:
Pen Llyn a'r Sarnau Special Area of Conservation (SAC) is designated for five Annex 1 habitats and four subsidiary ones. The major features of intertidal interest are Estuaries and their constituent mudflats, sandflats and reefs, Large shallow inlets and bays with intertidal Zostera beds, populations of the shingle dwelling amphipod Pectenogammarus, piddocks in clay and lower shore boulder communities and Reefs, particularly biogenic reefs of Sabellaria alveolata. Specific areas of interest for are the intertidal sediments and rocky areas in the Glaslyn and Dwyryd Estuaries. There were two purposes for this data capture. The first was related to sediments. Sediment data was collected to test monitoring methodology, establish sites for long term monitoring and collect baseline and reference data. The second was related to the Data collected on the rocky shore to establish sand levels at key rocky areas - Port Meirion, Ynys Gifftan and Cei Ballast.
Data holder:
Natural Resources Wales (NRW)
Click on the red button for resource contact details:
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| Other details | ||
| Internal code | Internally assigned metadata identifier | 8803 |
| 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. | Intertidal Monitoring of Muddy Gravel, Sediments and Rocky Shore in Pen Llyn a'r Sarnau Special Area of Conservation (SAC) 2008 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | 2008 CCW / ASML Pen Llyn a'r Sarnau SAC Dwyryd/Glaslyn MRCCW1630000000E |
| 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_DS115065 |
| Resource Identifier | This is the code assigned by the data owner. | 4f4c4942-4343-5764-6473-313135303635 |
| 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 | 2008-10-18 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2008-10-20 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 400 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| 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. | Pen Llyn a'r Sarnau Special Area of Conservation (SAC) is designated for five Annex 1 habitats and four subsidiary ones. The major features of intertidal interest are Estuaries and their constituent mudflats, sandflats and reefs, Large shallow inlets and bays with intertidal Zostera beds, populations of the shingle dwelling amphipod Pectenogammarus, piddocks in clay and lower shore boulder communities and Reefs, particularly biogenic reefs of Sabellaria alveolata. Specific areas of interest for are the intertidal sediments and rocky areas in the Glaslyn and Dwyryd Estuaries. There were two purposes for this data capture. The first was related to sediments. Sediment data was collected to test monitoring methodology, establish sites for long term monitoring and collect baseline and reference data. The second was related to the Data collected on the rocky shore to establish sand levels at key rocky areas - Port Meirion, Ynys Gifftan and Cei Ballast. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | In situ recording of sediment characteristics were undertaken across the whole area of the sediment flats. This data capture included epibiota, infauna and granulometry sampling. A collection of samples from ten stations were then analysed in the laboratory for infauna and sediment granulometry. Quadrat recording on three rocky shores was undertaken. One muddy gravel habitat site was visited at Carreg y Defaid but the tide failed to expose enough of the bank to allow a detailed survey. A species list was generated and some specimens were collected for identification. Data quality and confidence was considered high, as all surveys were completed by professional and experienced marine field surveyors. The methodology for the in situ grid stations was an adaptation of Phase I survey techniques developed for an earlier survey of the Mawddach Estuary (Wyn and Cooke, 2001). Monitoring was also previously carried out in 2007. All survey completed by professional and experienced marine field surveyors. Data quality and confidence considered high. |
| 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 | Glaslyn Dwyryd estuary | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | rocky reef | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | intertidal | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | sandflats | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | mudflats | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | estuarine rock | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | biotopes | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Macroalgae and seagrass taxonomy-related counts | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos taxonomy-related counts | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat characterisation | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 52.87783429 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.03716729 |
| South | The southern-most limit of the data resource in decimal degrees | 52.87783429 |
| West | The western-most limit of the data resource in decimal degrees | -4.17054843 |
| Regional sea | benthic boundary layer | |
| GWYNEDD - GWYNEDD | ||
| 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 | Countryside Council for Wales (CCW). Marine and Freshwater Ecosystems Group | |
| Delivery point | Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales | |
| enquiries@ccw.gov.uk | ||
| URL | http://www.ccw.gov.uk | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Aquatic Survey and Monitoring Ltd (ASML) | |
| Delivery point | Whitfield Brow, Bollihope, Frosterley, Weardale, Co. Durham, DL13 2SZ, England | |
| tom@aquatic-environments.co.uk | ||
| URL | http://www.marineseen.com/aquatic_survey_and_monitoring.htm | |
| 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 2010 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. | 2010-10-31 |
| 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_DS114501 | |