{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS102035.jsonld",
    "identifier": "NRW_DS102035",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS102035",
    "name": "Carmarthen Bay Intertidal Attributes and Monitoring Techniques - Monitoring of Piddocks",
    "description": "Under the 1992 EC Habitats and Species Directive, the UK submitted a list of candidate Special Areas of Conservation (cSACs) to the European Commission (EC). Each cSAC is selected for one or more of the habitat types and species listed in Annexes I and II of the Directive. This process was undertaken largely in 1995-1996. The piddock Pholas dactylus occurs in Britain from Kent along the south and south-west coasts including south Wales, Anglesey and Solway (Hill 2004). It has also been recorded from several sites on the east coasts of Yorkshire and Northumbria and southwest Ireland. The surface of the peat or clay bed is characterised by dense algal mats and pools of standing water (JNCC 2004). The presence of piddocks is instantly identified by holes in the substratum. The aim of this data capture was to map the current known extent and density of boring molluscs, piddocks, across the biotope at Marros Sands and Whiteford Point, and record any mussel spat or seed on the biotope. Piddocks are bivalves that bore clay and peat exposures. The survey work is largely a trial to determine the best means by which to record the extent of the exposures as well as the populations of piddocks. Sand levels are found to change over time, seasonally, annually and as a result of one off weather events (storms), and thus the areas of populated peat and clay also vary. A non-destructive means of assessing the piddock population is considered.",
    "includedInDataCatalog": {
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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 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."
    ],
    "temporalCoverage": "2004-09-15/2004-09-17",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/sd",
            "name": "Species distribution"
        },
        {
            "@type": "DefinedTerm",
            "name": "Carmarthen Bay"
        },
        {
            "@type": "DefinedTerm",
            "name": "lamellibranchia (pelecypoda) (bivalvia)"
        },
        {
            "@type": "DefinedTerm",
            "name": "bivalve molluscs"
        },
        {
            "@type": "DefinedTerm",
            "name": "Special Area of Conservation Monitoring"
        },
        {
            "@type": "DefinedTerm",
            "name": "Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)"
        },
        {
            "@type": "DefinedTerm",
            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/SABB/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "SABB",
            "name": "Shellfish abundance and biomass in water bodies"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.59887176 -4.661367103 51.82849207 -4.166842442"
        },
        "additionalProperty": [
            {
                "@type": "PropertyValue",
                "propertyID": "http://www.opengis.net/def/crs/EPSG/0/27700",
                "value": "National Grid of Great Britain - urn:ogc:def:crs:EPSG::27700"
            }
        ]
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    "author": [
        {
            "@type": "Organization",
            "name": "Natural Resources Wales (NRW)",
            "description": "owner",
            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
            }
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            "name": "Countryside Council for Wales (CCW)",
            "description": "originator",
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                "streetAddress": "Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW"
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        "url": "https://portal.medin.org.uk/portal/",
        "name": "Marine Environmental Data and Information Network (MEDIN)",
        "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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}