{
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    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS109884.jsonld",
    "identifier": "NRW_DS109884",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS109884",
    "name": "Saltmarsh Features at Milford Haven 1996 - Sea Empress Survey",
    "description": "The Sea Empress released approximately 72,000 tonnes of crude oil and about 480 tonnes of heavy fuel oil in the period 15 to 21 Feb 1996 when grounded off Milford Haven and later while at the jetty. \r\n\r\nThe coastline within Milford Haven was heavily oiled and a major clean-up operation was mounted. However, to avoid further damage, oil was not cleaned from the saltmarsh. Many of the affected saltmarshes in Milford Haven lie within Sites of Special Scientific Interest (SSSI) and also form components of candidate Special Area of Conservation (cSAC) under the Habitats Directive.\r\n\r\nAs part of the response to the oil spill, the former Countryside Council for Wales (CCW) now Natural Resources Wales (NRW) commissioned a damage assessment survey of impacted saltmarshes in Milford Haven. Carry out an assessment of the possible damage to saltmarsh habitat and the associated scarce species Salicornia pusilla and Limonium humile affected by the Sea Empress oil spillage and to establish a base-line against which future changes may be kept under surveillance - this included mapping the saltmarshes using National Vegetation Classification (NVC) methodology. The survey also aimed to assess the levels of hydrocarbon pollution within the sediments of the affected saltmarshes.",
    "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. 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 [1999]. 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": "1996-10-31/1998-10-31",
    "keywords": [
        {
            "@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": "Pembrokeshire (county pre 1974)( county since 4/96)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Pembroke Dock"
        },
        {
            "@type": "DefinedTerm",
            "name": "vegetation surveys (vegetation monitoring)(see also biologicalsurveys)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Sea Empress"
        },
        {
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            "name": "vegetation classification"
        },
        {
            "@type": "DefinedTerm",
            "name": "National Vegetation Classification (NVC)"
        },
        {
            "@type": "DefinedTerm",
            "name": "saltmarsh (salt-marsh) (salt marsh)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Milford Haven"
        },
        {
            "@type": "DefinedTerm",
            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/HBCH/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "HBCH",
            "name": "Habitat characterisation"
        },
        {
            "@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": "51.66570131 -5.166367366 51.74573619 -4.925810762"
        },
        "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"
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    "author": [
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            "name": "Natural Resources Wales (NRW)",
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            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
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        "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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