{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS124164.jsonld",
    "identifier": "NRW_DS124164",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS124164",
    "name": "Eighteen years of capture-mark-recapture (CMR) data of grey seal pups, Halichoerus grypus, from Pembrokeshire, Wales",
    "description": "Eighteen years (1954-1972) of capture-mark-recapture data of 245 grey seal pups marked with identification tags in Wales. The data was obtained from paper files held by NRW and supplied originally West Wales Field Society and includes information on the location and number of animals marked in each year including sex and age estimations.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "conditionsOfAccess": [
        "access: This data is comprised of a mixture of third party owned records and NRW records. NRW policy permits access to and release of this data under the same terms as its own data. There are no access restrictions on this data. NRW may release, publish or disseminate it freely.",
        "access: no limitations",
        "use: \u00a9 CNC/NRW, ZSL, WWFS and various third-party recorders NRW owns the copyright of the collation, but the ownership of the records themselves rests with the originators. Data held by NRW may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.",
        "use: Contains Natural Resources Wales information \u00a9 Natural Resources Wales and Database Right. All rights Reserved. Contains volunteer data \u00a9 Zoological Society London and \u00a9 West Wales Field Society",
        "use: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
    ],
    "temporalCoverage": "1954-01-01/1972-12-31",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/sd",
            "name": "Species distribution"
        },
        {
            "@type": "DefinedTerm",
            "name": "marine mammals"
        },
        {
            "@type": "DefinedTerm",
            "name": "marine mammals"
        },
        {
            "@type": "DefinedTerm",
            "name": "halichoerus grypus"
        },
        {
            "@type": "DefinedTerm",
            "name": "seals (see also specific species)"
        },
        {
            "@type": "DefinedTerm",
            "name": "dispersal"
        },
        {
            "@type": "DefinedTerm",
            "name": "grey seals"
        },
        {
            "@type": "DefinedTerm",
            "name": "ontogeny"
        },
        {
            "@type": "DefinedTerm",
            "name": "mark-release-recapture"
        },
        {
            "@type": "DefinedTerm",
            "name": "population dynamics"
        },
        {
            "@type": "DefinedTerm",
            "name": "pinnipedia (pinnipeds)"
        },
        {
            "@type": "DefinedTerm",
            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/FOCA/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "FOCA",
            "name": "Seal abundance"
        },
        {
            "@type": "DefinedTerm",
            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/SEMP/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "SEMP",
            "name": "Seal morphology and physiology"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.55 -5.4 52.15 -4.65"
        },
        "additionalProperty": [
            {
                "@type": "PropertyValue",
                "propertyID": "http://www.opengis.net/def/crs/OGC/1.3/CRS84",
                "value": "urn:ogc:def:crs:EPSG:4326"
            }
        ]
    },
    "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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            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
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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."
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}