{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS102008.jsonld",
    "identifier": "NRW_DS102008",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS102008",
    "name": "Intertidal Monitoring of Sabellaria alveolata Reefs in Pen Llyn ar Sarnau Special Areas of Conservation (SAC) (2004/2005)",
    "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). Dense congregations of S. alveolata tubes form large biogenic reef structures, which can be up to a metre thick and take the form of hummocks, sheets or more massive formations. This dataset combines the results of two monitoring events carried out on Sabellaria alveolata reef features within the Pen Llyn a'r Sarnau SAC during 2004 and 2005. \r\n\r\nIn 2004 the purpose of this data capture was to identify specific survey locations, measure the extent of S. alveolata reef along agreed transects, assess the quality of S. alveolata reef present. Map and make notes on any sightings of wireweed Sargassum muticum. \r\n\r\nIn 2005 the purpose of this data capture was more detailed monitoring of selected reef areas to thoroughly characterise small patches of reef and make an assessment of the impacts of anthropogenic disturbance on reef diversity.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "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 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.",
        "use: Contains Natural Resources Wales information \u00a9 Natural Resources Wales and Database Right. All rights Reserved.",
        "use: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
    ],
    "temporalCoverage": "2004-07-05/2005-08-10",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/sd",
            "name": "Species distribution"
        },
        {
            "@type": "DefinedTerm",
            "name": "Tonfanau"
        },
        {
            "@type": "DefinedTerm",
            "name": "Pen Llyn a'r Sarnau SAC"
        },
        {
            "@type": "DefinedTerm",
            "name": "marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore)"
        },
        {
            "@type": "DefinedTerm",
            "name": "sabellaria alveolata"
        },
        {
            "@type": "DefinedTerm",
            "name": "Friog"
        },
        {
            "@type": "DefinedTerm",
            "name": "Clarach"
        },
        {
            "@type": "DefinedTerm",
            "name": "Criccieth"
        },
        {
            "@type": "DefinedTerm",
            "name": "Shell Island"
        },
        {
            "@type": "DefinedTerm",
            "name": "honeycomb worm"
        },
        {
            "@type": "DefinedTerm",
            "name": "polychaete worms"
        },
        {
            "@type": "DefinedTerm",
            "name": "Borth"
        },
        {
            "@type": "DefinedTerm",
            "name": "Cae-du"
        },
        {
            "@type": "DefinedTerm",
            "name": "Special Areas of Conservation (SAC) - SAC monitoring"
        },
        {
            "@type": "DefinedTerm",
            "name": "Llandanwg"
        },
        {
            "@type": "DefinedTerm",
            "name": "biogenic reef"
        },
        {
            "@type": "DefinedTerm",
            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/ZOOB/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "ZOOB",
            "name": "Zoobenthos taxonomy-related counts"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.97991891 -5.04520831 52.94984614 -4.02054288"
        },
        "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"
            }
        ]
    },
    "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"
            }
        }
    ],
    "maintainer": [
        {
            "@type": "Organization",
            "name": "Natural Resources Wales (NRW)",
            "description": "custodian",
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            }
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    ],
    "producer": [
        {
            "@type": "Organization",
            "name": "Countryside Council for Wales (CCW)",
            "description": "originator",
            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW"
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    "publisher": [
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            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
            }
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    "creator": [
        {
            "@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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    ],
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        "@type": "Organization",
        "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."
    }
}