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    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS113087.jsonld",
    "identifier": "NRW_DS113087",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS113087",
    "name": "Intertidal Survey Mapping (phase 1) from Pen-ychain to Criccieth, Pen Llyn a'r Sarnau Special Areas of Conservation (SAC) 2010",
    "description": "The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. The purpose of this data capture was to conduct a habitat survey of the intertidal area from Pen-ychain to Criccieth Castle on the south coast of the Llyn Peninsula. This work supported the detailed SAC monitoring program by providing a more up to date baseline survey of the intertidal area. It provided CCW with information to help deal with current and future casework in relation to coastal defence, and reporting particularly regarding BAP habitats and species of conservation concern. One such Biodiversity Action Plan (BAP) habitat are the Sabellaria alveolata reefs which are formed by the honeycomb worm Sabellaria alveolata, a polychaete which constructs tubes in tightly packed masses with a distinctive honeycomb-like appearance. These reefs can be up to 30 or even 50 cm thick and take the form of hummocks, sheets or more massive formations. Reefs are mainly found on the bottom third of the shore, but may reach mean high water of neap tides and extend into the shallow subtidal in places. The current report aims to fill these knowledge gaps for the survey area. The purpose of this data capture is to update previous intertidal mapping in the area and to specifically provide an updated extent of honeycomb worm reef Sabellaria alveolata. The specific project aims were to identify natural temporal changes that have been witnessed since the original Phase 1 Intertidal Mapping Project in 1996-1997.",
    "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 2011. 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."
    ],
    "temporalCoverage": "2010-10-06/2010-10-08",
    "keywords": [
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            "identifier": "http://inspire.ec.europa.eu/theme/hb",
            "name": "Habitats and biotopes"
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        {
            "@type": "DefinedTerm",
            "name": "honeycomb worm"
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            "name": "Pen Llyn a'r Sarnau cSAC"
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            "name": "polychaete worms"
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            "name": "Phase 1 Habitat Survey"
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            "name": "sabellaria alveolata"
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            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/HBCH/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "HBCH",
            "name": "Habitat characterisation"
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            "termCode": "HBEX",
            "name": "Habitat extent"
        }
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            "box": "52.8892144 -4.33004182 52.91850733 -4.22498782"
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    "author": [
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            "email": "enquiries@naturalresourceswales.gov.uk",
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                "@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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