{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS114452.jsonld",
    "identifier": "NRW_DS114452",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS114452",
    "name": "Restoration of Native Oyster, Ostrea edulis, in South Wales",
    "description": "Native oyster populations throughout Europe suffered a serious decline in the late 19th and early 20th centuries due predominantly to over fishing and associated habitat loss, but exacerbated by anthropogenic and environmental pressures of pollution, disease and a series of cold winters. Historic accounts place Ostrea edulis at the centre of important local fisheries in South Wales back to the Roman occupation of Britain and describe a fishery supporting 200 vessels landing over 9 million oysters at its peak in the 19th century. Ostrea edulis are found on a wide variety of firm and stable seabed habitats where clean hard surfaces exist for larval settlement but it is likely that more complex habitat forms have historically existed including oyster banks and reefs. The aim of this study was to identify the scope and potential approaches for restoration of native oyster populations and habitats in South Wales. The associated report describes the options for practical approaches for restoration of the native oyster in its natural habitat in South Wales to meet UK and Welsh Biodiversity Action Plan (BAP) targets for recovery.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "conditionsOfAccess": [
        "access: Part of this dataset is sensitive and restricted. The sensitive data is as follows; the location of native oyster beds. Sensitive data must be kept confidential; general release is not permitted due to risk of harm to the environment or third parties. Sensitive data may only be released under an appropriate NRW Licence. Requests should be referred to NRW's Access to Information Officer. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale.",
        "access: no limitations",
        "use: \u00a9 CNC/NRW, 2011. Recipients may only re-use sensitive data in strict confidence under the terms of an appropriate NRW Licence. No publication or dissemination is permitted, except if sensitive records are removed in advance, or shown only at a coarser scale."
    ],
    "temporalCoverage": "1899-01-01/2010-12-31",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/hb",
            "name": "Habitats and biotopes"
        },
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/sd",
            "name": "Species distribution"
        },
        {
            "@type": "DefinedTerm",
            "name": "native oyster"
        },
        {
            "@type": "DefinedTerm",
            "name": "Milford Haven"
        },
        {
            "@type": "DefinedTerm",
            "name": "habitat restoration"
        },
        {
            "@type": "DefinedTerm",
            "name": "Swansea Bay"
        },
        {
            "@type": "DefinedTerm",
            "name": "ostrea edulis"
        },
        {
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            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/HBEX/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "HBEX",
            "name": "Habitat extent"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.407494 -5.2636097 51.7901951 -3.5700887"
        },
        "additionalProperty": [
            {
                "@type": "PropertyValue",
                "propertyID": "http://www.opengis.net/def/crs/OGC/1.3/CRS84",
                "value": "urn:ogc:def:crs:EPSG:4326"
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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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    "maintainer": [
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            "name": "Woolmer",
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            "email": "andy@salacia-marine.co.uk",
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                "streetAddress": "c/o Salacia-Marine, 91 New Road, Ynysmeudwy, Castell-Nedd Port Talbot, SA8 4PP, Wales"
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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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}