{ "@context": "https://schema.org", "@type": "Dataset", "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS109823.jsonld", "identifier": "NRW_DS109823", "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS109823", "name": "Shellfish Stocks, Oystercatcher and Knot (bird) Modelling Data for the Dee Estuary, Traeth Lafan and the Burry Inlet and Three Rivers, Phase 1 (1993-2001)", "description": "The Dee, Traeth Lafan and Burry Inlet are designated Special Protection Areas (SPAs) for nationally and internationally important populations of wintering wildfowl and waders. In order to set conservation objectives and assess the sites for Favourable Conservation Status, information is required on numbers of birds using the sites and the food supplies they require to survive the winter and attain adequate body condition for Spring Migration. The three SPAs also support economically important cockle fisheries that may affect oystercatchers directly, by removing some of the food available to them and, indirectly, by displacing them from the best cockle beds to less suitable feeding areas. This is phase 1 of the project that will assess and use existing data to run an Individual Behaviour-based Model (IBM) to answer key questions relating to target setting, condition monitoring and management of each of the three sites. There were two main objectives to the project. The first to assess the power of existing surveys to detect change in the cockle populations at each site and recommend possible improvements. The second objective was to determine how each site was used by the populations of oystercatchers that roosted there. The models can be used to establish the target baseline quality habitats in terms of invertebrate populations but also in terms of the ability of the site to support the bird populations for which it was designated and therefore establish parameters for longer term monitoring and to establish whether it is in favourable conservation status.", "includedInDataCatalog": { "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld" }, "conditionsOfAccess": [ "access: There are no access restrictions to this data. NRW may release, publish or disseminate it freely.", "access: no limitations", "use: \u00a9 CNC/NRW 2003 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 NRW's copyright, 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." ], "temporalCoverage": "1986-04-01/2001-02-28", "keywords": [ { "@type": "DefinedTerm", "identifier": "http://inspire.ec.europa.eu/theme/sd", "name": "Species distribution" }, { "@type": "DefinedTerm", "name": "haematopus ostralegus" }, { "@type": "DefinedTerm", "name": "unionidae" }, { "@type": "DefinedTerm", "name": "Burry Inlet" }, { "@type": "DefinedTerm", "name": "shellfish" }, { "@type": "DefinedTerm", "name": "cockles" }, { "@type": "DefinedTerm", "name": "cockle beds" }, { "@type": "DefinedTerm", "name": "Dee estuary" }, { "@type": "DefinedTerm", "name": "Mersey estuary" }, { "@type": "DefinedTerm", "name": "Lafan sands (Lavan sands)(Traeth Lafan)" }, { "@type": "DefinedTerm", "name": "mussels" }, { "@type": "DefinedTerm", "name": "common mussel" }, { "@type": "DefinedTerm", "name": "Morecambe Bay" }, { "@type": "DefinedTerm", "name": "mytilus edulis" }, { "@type": "DefinedTerm", "name": "Ribble estuary" }, { "@type": "DefinedTerm", "name": "mussel beds" }, { "@type": "DefinedTerm", "name": "oystercatchers" }, { "@type": "DefinedTerm", "name": "marine monitoring (see also marine surveys)" }, { "@type": "DefinedTerm", "name": "Special Protection Areas (SPAs) (see also proposed Special Protection Area pSPA)" }, { "@type": "DefinedTerm", "name": "cerastoderma edule (previously known as cardium edule)" }, { "@type": "DefinedTerm", "name": "environmental modelling" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/BRDD/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "BRDD", "name": "Bird taxonomy-related abundance per unit area of surface" }, { "@type": "DefinedTerm", "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/SABB/", "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/", "termCode": "SABB", "name": "Shellfish abundance and biomass in water bodies" } ], "spatialCoverage": { "@type": "Place", "geo": { "@type": "GeoShape", "box": "51.240829 -5.777741 53.513067 -2.608865" }, "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": "Natural Resources Wales (NRW)", "description": "owner", "email": "enquiries@naturalresourceswales.gov.uk", "address": { "@type": "PostalAddress", "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales" } } ], "maintainer": [ { "@type": "Organization", "name": "Natural Resources Wales (NRW)", "description": "custodian", "email": "enquiries@naturalresourceswales.gov.uk", "address": { "@type": "PostalAddress", "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales" } } ], "producer": [ { "@type": "Organization", "name": "Various", "description": "originator", "email": "enquiries@naturalresourceswales.gov.uk", "address": { "@type": "PostalAddress", "streetAddress": "Enquiries Unit, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW" } } ], "publisher": [ { "@type": "Organization", "name": "Natural Resources Wales (NRW)", "description": "pointOfContact", "email": "enquiries@naturalresourceswales.gov.uk", "address": { "@type": "PostalAddress", "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales" } } ], "provider": [ { "@type": "Organization", "name": "Natural Resources Wales (NRW)", "description": "distributor", "email": "enquiries@naturalresourceswales.gov.uk", "address": { "@type": "PostalAddress", "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales" } } ], "creator": [ { "@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" } } ], "sdPublisher": { "@type": "Organization", "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." } }