{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS115512.jsonld",
    "identifier": "NRW_DS115512",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS115512",
    "name": "Historic Aerial Imagery to Monitor Temporal Change in Intertidal Habitats",
    "description": "Long-term and broad-scale datasets are essential to any investigation of change in natural communities. This dataset includes the collation of aerial imagery for 44 sites around the Welsh coastline, selected to contain rocky shore, saltmarsh or Sabellaria alveolata across temporal scales providing suitable data for comparisons of change through time, both anthropogenic and biological. \r\n\r\nIn order for comparisons to present day imagery, current aerial imagery was also obtained in this study. Photographic aerial images containing features of conservation value (specifically rocky shores, Sabellaria alveolata inhabited shores and saltmarsh areas) within Wales were obtained. Historic photographic aerial images that contained features of conservation value (specifically rocky shores, Sabellaria alveolata inhabited shores and saltmarsh areas) within Wales were selected from expert knowledge and Countryside Council for Wales's collection of habitat maps. \r\n\r\nThe aim of this project was to collate, digitise and georeference aerial photographic imagery for sites that had multi-year overlap. Accuracies of less than 5 m RMS was obtained (with the exception of Treath Lafan, 1995, and the Dyfi Estuary, 1975). At these saltmarsh locations, there were too few ground control points to achieve this accuracy.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "conditionsOfAccess": [
        "access: The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).",
        "access: no limitations",
        "use: \u00a9 CNC/NRW and \u00a9 Crown copyright 2013. All rights reserved. Natural Resources Wales, AC0000849444 Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS.",
        "use: Contains Natural Resources Wales information \u00a9 Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right."
    ],
    "temporalCoverage": "1969-01-01/2013-12-31",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/oi",
            "name": "Orthoimagery"
        },
        {
            "@type": "DefinedTerm",
            "name": "satellite images"
        },
        {
            "@type": "DefinedTerm",
            "name": "saltmarsh (salt-marsh) (salt marsh)"
        },
        {
            "@type": "DefinedTerm",
            "name": "photographs (images)"
        },
        {
            "@type": "DefinedTerm",
            "name": "rocky shore"
        },
        {
            "@type": "DefinedTerm",
            "name": "honeycomb worm"
        },
        {
            "@type": "DefinedTerm",
            "name": "coastal habitats (see also specific habitat: saltmarsh,sanddune,maritime heath)"
        },
        {
            "@type": "DefinedTerm",
            "name": "imagery"
        },
        {
            "@type": "DefinedTerm",
            "name": "polychaete worms"
        },
        {
            "@type": "DefinedTerm",
            "name": "sabellaria alveolata"
        },
        {
            "@type": "DefinedTerm",
            "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": "51.240829 -5.777741 53.513067 -2.608865"
        },
        "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",
            "email": "enquiries@naturalresourceswales.gov.uk",
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                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
            }
        }
    ],
    "producer": [
        {
            "@type": "Organization",
            "name": "University of Wales, Bangor. School of Ocean Sciences",
            "description": "originator",
            "email": "oss011@bangor.ac.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Bangor, Gwynedd, LL57 2DG"
            }
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    "provider": [
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            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
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                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
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    "creator": [
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            "@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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    ],
    "sdPublisher": {
        "@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."
    }
}