© OpenStreetMap contributors
The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. Honeycomb reef worm Sabellaria alveolata is a sedentary, tube-dwelling polychaete most commonly found on rocky substrata in the lower shore and shallow subtidal zones of marine and estuarine areas. The honeycomb reef worm is a UK BAP Priority Habitat (BAP habitats are now Habitats of Principal Importance/Priority Habitats). Honeycomb worms build tubes from sand and shell fragments. They are found o n the lower part of rocky seashores but they also need a sand supply for tube-building. They are found on the lower part of rocky seashores but they also need a sand supply for tube-building. Pen Llyn a'r Sarnau SAC is designated for five Annex 1 habitats and four subsidiary ones. Of these, 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 are the main habitats of interest within the intertidal areas of the SAC. The purpose of this data capture was to monitoring the extent of Sabellaria alveolata reefs. Field work was carried out during five days of spring tides, 6th to 10th July 2009. Data quality and confidence considered high as all surveys were completed by professional and experienced marine field surveyors.
Natural Resources Wales (NRW)
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Other details | ||
Internal code | Internally assigned metadata identifier | 1983 |
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 Sabellaria alveolata Reefs in Pen Llyn a'r Sarnau Special Areas of Conservation (SACs) 2010 |
Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Gwaith Monitro Rhynglanwol - riffiau Sabellaria alveolata yn ACA Pen Llyn a'r Sarnau 2010, 2010 CCW / ASML Pen Llyn A'r Sarnau SAC Sabellaria monitoring MRCCW1630000002E |
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. | 4f4c4942-4343-5764-6473-313134343538 |
Resource Identifier | This is the code assigned by the data owner. | 114458 |
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 | 2009-07-06 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2009-07-10 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 10 |
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'. | notPlanned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. Honeycomb reef worm Sabellaria alveolata is a sedentary, tube-dwelling polychaete most commonly found on rocky substrata in the lower shore and shallow subtidal zones of marine and estuarine areas. The honeycomb reef worm is a UK BAP Priority Habitat (BAP habitats are now Habitats of Principal Importance/Priority Habitats). Honeycomb worms build tubes from sand and shell fragments. They are found o n the lower part of rocky seashores but they also need a sand supply for tube-building. They are found on the lower part of rocky seashores but they also need a sand supply for tube-building. Pen Llyn a'r Sarnau SAC is designated for five Annex 1 habitats and four subsidiary ones. Of these, 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 are the main habitats of interest within the intertidal areas of the SAC. The purpose of this data capture was to monitoring the extent of Sabellaria alveolata reefs. Field work was carried out during five days of spring tides, 6th to 10th July 2009. Data quality and confidence considered high as all surveys were completed by professional and experienced marine field surveyors. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Two areas of Sabellaria reef were re-surveyed in 2010, having been surveyed by ASML in 2009: Llandanwg and West of Afon Dwyfor. At each quadrat station, surveyors established an origin at the centre of an imaginary 10 m x 10 m grid (i.e. at location (5 m, 5 m)) and then the surveyors proceeded to survey the initial 5 random quadrats in detail. At each transect location, surveyors walked down the transect using the GPS and made notes on habitat, community and condition / age of the Sabellaria reef. Condition of Sabellaria reef was recorded using a defined 7 point scale. The age of the Sabellaria reef was recorded using a defined 4 point scale. GPS fixes were taken along the transect to mark changes in Sabellaria reef condition and to mark the top and bottom of t he transect (often the water line). Photographs were taken to illustrate habitat and condition of the Sabellaria reef. A survey by ASML was also undertaken in 2009. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitats and biotopes |
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 | Habitat extent | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 52.94512173 |
East | The eastern-most limit of the data resource in decimal degrees | -3.99568774 |
South | The southern-most limit of the data resource in decimal degrees | 52.79385668 |
West | The western-most limit of the data resource in decimal degrees | -4.33519484 |
Regional sea | 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) | |
Phone | 0300 065 3000 | |
Delivery point | Maes-y-Ffynnon | |
Postal code | LL57 2DW | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Natural Resources Wales (NRW) | |
Phone | 0300 065 3000 | |
Delivery point | Maes-y-Ffynnon | |
Postal code | LL57 2DW | |
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) | |
Phone | 0300 065 3000 | |
Delivery point | Maes-y-Ffynnon | |
Postal code | LL57 2DW | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Aquatic Survey and Monitoring Ltd (ASML) | |
Phone | 01388 528 015 | |
Delivery point | Whitfield Brow | |
Postal code | DL13 2SZ | |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
20 Limitations on Public Access – Other constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | There are no access restrictions to this data. NRW may release, publish or disseminate it freely. |
21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | © CNC/NRW 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. | 2010-07-31 |
Date of last revision | The most recent date that the resource was revised. | 2010-07-31 |
Metadata date | The date when the content of this metadata record was last updated. | 2018-07-03 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata Standard |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.8 |
© OpenStreetMap contributors