{
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    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS114458.jsonld",
    "identifier": "NRW_DS114458",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS114458",
    "name": "Intertidal Monitoring of Sabellaria alveolata Reefs in Pen Llyn a'r Sarnau Special Areas of Conservation (SACs) 2010",
    "description": "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 on 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.",
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    "conditionsOfAccess": [
        "access: There are no access restrictions to this data. NRW may release, publish or disseminate it freely.",
        "access: no limitations",
        "use: \u00a9 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."
    ],
    "temporalCoverage": "2009-07-06/2009-07-10",
    "keywords": [
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            "identifier": "http://inspire.ec.europa.eu/theme/hb",
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            "name": "Species distribution"
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        {
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            "name": "polychaete worms"
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        {
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            "name": "sabellaria alveolata"
        },
        {
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            "name": "Special Areas of Conservation (SAC) - SAC monitoring"
        },
        {
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            "name": "honeycomb worm"
        },
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            "name": "intertidal"
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            "termCode": "HBEX",
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            "box": "52.79385668 -4.33519484 52.94512173 -3.99568774"
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    "author": [
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                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
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        "description": "The MEDIN portal contains information about 19493 marine datasets from over 600 UK organisations. Metadata are an enduring resource and contact details are publicly available for a long time. \r\n\t\tPlease contact us (enquiries@medin.org.uk) if you find your contact details on the MEDIN portal and do not consent to this. \r\n\t\tYou can now use our GitHub repository to report issues or access related documents. Metadata records are updated daily and were last updated 2026-04-19. Record deletion takes place weekly and the latest occurred 2026-04-12."
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