{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS114860.jsonld",
    "identifier": "NRW_DS114860",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS114860",
    "name": "Colonisation, Growth and Interactions of Carpet Sea Squirt (Didemnum vexillum)",
    "description": "The Carpet Sea Squirt (Didemnum vexillum) is a Invasive Non Native (INN) filter feeding marine invertebrate that forms large colonies carpetting hard structures on which it grows. \r\n\r\nCarpet Sea Squirt (Didemnum vexillum) was only confirmed in British waters in 2008. However, there are strong concerns that it will quickly colonise a much wider area as it has been found to do in other countries such as New Zealand and the USA. \r\n\r\nAfter an initial survey to identify the extent of colonisation, an eradication programme was undertaken by the Countryside Council for Wales. A programme of monitoring was initiated to measure the success of the eradication experiment and subsequent recolonisation and a research project undertaken in conjunction with Bangor University. \r\n\r\nThe purpose of this data capture was to assess patterns of settlement, growth, colonisation and species interactions of Didemnum vexillum within Holyhead Marina from season to season. Also to look at how different disturbance magnitudes have negative or positive effects on Didemnum vexillum settlement and recruitment.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "conditionsOfAccess": [
        "access: This data is jointly owned by NRW and Bangor University. There are no access restrictions to this data. NRW may release, publish or disseminate it freely.",
        "access: no limitations",
        "use: \u00a9 CNC/NRW and Bangor University 2012. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and the copyright of NRW/ Bangor University and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.",
        "use: \u00a9 CNC/NRW and Bangor University 2012",
        "use: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/"
    ],
    "temporalCoverage": "2011-05-17/2012-01-25",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/sd",
            "name": "Species distribution"
        },
        {
            "@type": "DefinedTerm",
            "name": "colonial sea squirt"
        },
        {
            "@type": "DefinedTerm",
            "name": "non-native species"
        },
        {
            "@type": "DefinedTerm",
            "name": "Didemnum vexillum"
        },
        {
            "@type": "DefinedTerm",
            "name": "invasive species (alien species)"
        },
        {
            "@type": "DefinedTerm",
            "name": "Holyhead"
        },
        {
            "@type": "DefinedTerm",
            "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": "53.31871806 -4.64566635 53.32210927 -4.64053809"
        },
        "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": "University of Wales, Bangor. School of Ocean Sciences",
            "description": "owner",
            "email": "oss011@bangor.ac.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Bangor, Gwynedd, LL57 2DG"
            }
        }
    ],
    "maintainer": [
        {
            "@type": "Organization",
            "name": "University of Wales, Bangor. School of Ocean Sciences",
            "description": "custodian",
            "email": "oss011@bangor.ac.uk",
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                "streetAddress": "Bangor, Gwynedd, LL57 2DG"
            }
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    ],
    "producer": [
        {
            "@type": "Organization",
            "name": "CCW Marine Monitoring Team",
            "description": "originator",
            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW"
            }
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                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
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    ],
    "creator": [
        {
            "@type": "Organization",
            "name": "University of Wales, Bangor. School of Ocean Sciences",
            "description": "owner",
            "email": "oss011@bangor.ac.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Bangor, Gwynedd, LL57 2DG"
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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."
    }
}