{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS108800.jsonld",
    "identifier": "NRW_DS108800",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS108800",
    "name": "Phase 2 Saltmarsh Survey of Wales",
    "description": "This National Vegetation Classification (NVC) Phase 2 project and corresponding datasets are a collation of mapped saltmarsh habitats across Wales. This data was collected to provide an overview of saltmarshes across Wales. The surveys were conducted between 1990 and 2003. The dataset has been extensively validated and verified. However, habitat composition may change over time due to successional trends, land management or even planned developments. A record of a vegetation type or species in the digital data is therefore no guarantee that it is still extant on the ground.\r\n\r\nCoastal saltmarshes in the UK comprise of the upper, vegetated portions of intertidal mudflats, lying approximately between mean high water neap tides and mean high water spring tides. Saltmarshes are usually restricted to comparatively sheltered locations in five main physiographic situations: in estuaries, in saline lagoons, behind barrier islands, at the heads of sea lochs, and on beach plains. The development of saltmarsh vegetation is dependent on the presence of intertidal mudflats. Communities are additionally affected by differences in climate, the particle size of the sediment and, within estuaries, by decreasing salinity in the upper reaches.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "conditionsOfAccess": [
        "access: This dataset contains 'simple derived data' which is jointly owned by NRW and the Ordnance Survey in the form of polygon GIS tables. NRW may release, publish or disseminate these components freely, providing recipients are made aware of use restrictions (see below). Data not derived from OS products have no access or use restrictions. Third party recipients may reproduce, disseminate and re-use 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. To avoid using old information, we recommend that the latest version is obtained from the original source.",
        "access: no limitations",
        "use: \u00a9 CNC/NRW and \u00a9 Crown copyright. All rights reserved. Natural Resources Wales, AC0000849444 [2016]. \u00a9 Hawlfraint y Goron. Cedwir pob hawl. Cyfoeth Naturiol Cymru AC0000849444 [2016] This dataset contains 'simple derived data' which is jointly owned by NRW and the Ordnance Survey in the form of polygon vector data- vegetation, site boundary and vegetation mosaic MapInfo tables. Third parties seeking to re-use this dataset require a NRW licence. It allows reproduction, dissemination and re-use 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.",
        "use: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
    ],
    "temporalCoverage": "1993-08-24/2003-08-06",
    "keywords": [
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            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/hb",
            "name": "Habitats and biotopes"
        },
        {
            "@type": "DefinedTerm",
            "name": "vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys)"
        },
        {
            "@type": "DefinedTerm",
            "name": "species inventory"
        },
        {
            "@type": "DefinedTerm",
            "name": "habitat surveys (habitat monitoring)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Phase 2 Survey (Phase II)"
        },
        {
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            "name": "saltmarsh (salt-marsh) (salt marsh)"
        },
        {
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            "name": "National Vegetation Classification (NVC)"
        },
        {
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            "name": "vegetation surveys (vegetation monitoring)(see also biologicalsurveys)"
        },
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            "name": "vegetation classification"
        },
        {
            "@type": "DefinedTerm",
            "name": "habitat mapping"
        },
        {
            "@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"
        },
        {
            "@type": "DefinedTerm",
            "name": "Ecosystem (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Animals, Plants and Other Organisms (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Sea and Coast (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Soils (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Soil and Land (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Coastal Margins (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Natural Resources (Incl. Features and Processes) (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Sustainable Management of Natural Resources (SMNR)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Management Areas (SMNR)"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.240829 -5.777741 53.513061 -2.608865"
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            "termCode": "IA",
            "name": "inapplicable"
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        "additionalProperty": [
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                "@type": "PropertyValue",
                "propertyID": "http://www.opengis.net/def/crs/EPSG/0/27700",
                "value": "National Grid of Great Britain - urn:ogc:def:crs:EPSG::27700"
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                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, 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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}