{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS101780.jsonld",
    "identifier": "NRW_DS101780",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS101780",
    "name": "A study of the Milford Haven maerl bed (2005)",
    "description": "Maerl beds are a UK Biodiversity Action Plan (BAP) habitat and are also included in the biodiversity duty of public bodies introduced by the NERC Act 2006. Maerl is a collective term for several species of red seaweed, with hard, chalky skeletons. It is rock hard and, unlike other seaweeds, it grows as unattached rounded nodules or short, branched shapes on the seabed. Maerl beds are an important habitat for many different types of marine life, which live amongst or are attached to the surface of Maerl, or burrow in the coarse gravel of dead maerl beneath the top living layer. Maerl beds can be of importance to sustainable fisheries, providing nursery grounds for commercial species of fish and shellfish. In Milford Haven the maerl species Phymatolithon calcareum forms the only living maerl bed in Wales. P. calcareum is listed in the EC Habitats Directive Annex Vb. The aim of this project was to collate high quality images of the Milford Haven maerl bed to create a base line for long term monitoring for Biodiversity Action Plan reporting. There is high confidence in this dataset as the surveyors are amongst the most experienced marine biologists in the UK.",
    "includedInDataCatalog": {
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    },
    "conditionsOfAccess": [
        "access: The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. There are no access restrictions on this data. However there are third party use restrictions.",
        "access: no limitations",
        "use: \u00a9 CNC/NRW and \u00a9 Crown copyright. All rights reserved. Natural Resources Wales, AC0000849444 Data may be re-used under provision and in line with the terms of a NRW licence. Those seeking commercial re-use require a commercial licence available from the OS."
    ],
    "temporalCoverage": "2005-01-01/2005-12-31",
    "keywords": [
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            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/hb",
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        },
        {
            "@type": "DefinedTerm",
            "name": "underwater conservation"
        },
        {
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            "name": "underwater photography"
        },
        {
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            "name": "Video survey"
        },
        {
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            "name": "Biodiversity Action Plan (BAP)"
        },
        {
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            "name": "Maerl beds"
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            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/ZBTX/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "ZBTX",
            "name": "Zoobenthos taxonomic abundance"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.632661 -5.172808 51.760379 -4.966754"
        },
        "name": [
            {
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                "identifier": "http://vocab.nerc.ac.uk/collection/C19/current/1_4/",
                "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/C19/current/",
                "termCode": "1_4",
                "name": "Irish Sea"
            },
            {
                "@type": "DefinedTerm",
                "identifier": "http://vocab.nerc.ac.uk/collection/C19/current/UKMDN014/",
                "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/C19/current/",
                "termCode": "UKMDN014",
                "name": "St. Brides Bay"
            }
        ],
        "additionalProperty": [
            {
                "@type": "PropertyValue",
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                "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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            "email": "fbunker@marineseen.com",
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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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}