NRW_DS109822 eng dataset Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en pointOfContact 2026-03-03T14:49:09 MEDIN 3.1.2 wel eng utf8 British National Grid (EPSG::27700) Shellfish Stocks, Oystercatcher and Knot (bird) Modelling Data for the Dee Estuary, Traeth Lafan and the Burry Inlet and Three Rivers, Phase 2 (2003-2004) Shellfish Stocks, Oystercatcher and Knot (bird) Modelling Data for the Dee Estuary, Traeth Lafan and the Burry Inlet and Three Rivers, Phase 2 (2003-2004) Data rhagfynegol yn ymwneud a chregynbysgod, piod mor a phibyddion yr aber (adar) ar gyfer Afon Dyfrdwy, Traeth Lafan a Phorth Tywyn a'r Tair Afon, Cam 1 (2003-2004) 2007-11-01 publication 4f4c4942-4343-5764-6473-313039383232 The Dee, Traeth Lafan and Burry Inlet are designated Special Protection Areas (SPAs) for nationally and internationally important populations of wintering wildfowl and waders. To set conservation objections 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 This is phase 2 of a project that was started in 2002-03 and uses existing and new data to parameterise an individual behaviour-based model to answer key questions relating to target setting, condition monitoring and management of each of the three sites. The purpose of this data capture was to inform the setting of conservation objectives for the SPAs and assess the favourable conservation status of bird populations. The Dee, Traeth Lafan and Burry Inlet are designated Special Protection Areas (SPAs) for nationally and internationally important populations of wintering wildfowl and waders. To set conservation objections 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 This is phase 2 of a project that was started in 2002-03 and uses existing and new data to parameterise an individual behaviour-based model to answer key questions relating to target setting, condition monitoring and management of each of the three sites. The purpose of this data capture was to inform the setting of conservation objectives for the SPAs and assess the favourable conservation status of bird populations. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en owner Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en custodian Various Enquiries Unit, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ originator Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en distributor notPlanned Species distribution theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme cockles mytilus edulis calidris canutus common mussel Special Protection Areas (SPAs) (see also proposed Special Protection Area pSPA) Dee estuary mussels Lafan sands (Lavan sands)(Traeth Lafan) haematopus ostralegus mussel beds cockle beds Burry Inlet shellfish oystercatchers knots unionidae cerastoderma edule (previously known as cardium edule) environmental modelling theme NRW Thesaurus 2025-01-08 publication geonetwork.thesaurus.local.theme.converted_nrw-keywords Shellfish abundance and biomass in water bodies Bird taxonomy-related abundance per unit area of surface theme SeaDataNet Parameter Discovery Vocabulary 2024-06-19 publication geonetwork.thesaurus.external.theme.rdf+xml otherRestrictions There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations otherRestrictions © CNC/NRW 2004 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. vector eng utf8 biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision benthic boundary layer NRW Geographic Identifiers Collection 2024-01-01 publication Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2003-01-01 2004-12-31 Documents Input files are all spreadsheets and text file. Modelled data is model parameter files *.PAR undefined format. dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false An individual behaviour-based model (IBM) is used to predict the food requirements of a bird population. The model requires information on bird foraging behaviour together with site-specific data on bird numbers, and the size and distribution of cockle and mussel stocks. The following datasets were collated for the model 1. Ash Free Dry Mass analysis data files (excel spreadsheets) 2. Cockle and mussel survey data (excel spreadsheets) 3. Average daily temperatures (text files) Information on cockle and mussel stocks was collected by CCW for the 3 sites for 2003 and 2004 under a separate project. This builds on a scoping study (phase 1) that was undertaken in 2002-2003 that examined existing data to determine what additional data were required for the model and to determine the best methods for stock assessment. Data from Phase 1 is archived as project no 158 (Media 103). An individual behaviour-based model (IBM) is used to predict the food requirements of a bird population. The model requires information on bird foraging behaviour together with site-specific data on bird numbers, and the size and distribution of cockle and mussel stocks. The following datasets were collated for the model 1. Ash Free Dry Mass analysis data files (excel spreadsheets) 2. Cockle and mussel survey data (excel spreadsheets) 3. Average daily temperatures (text files) Information on cockle and mussel stocks was collected by CCW for the 3 sites for 2003 and 2004 under a separate project. This builds on a scoping study (phase 1) that was undertaken in 2002-2003 that examined existing data to determine what additional data were required for the model and to determine the best methods for stock assessment. Data from Phase 1 is archived as project no 158 (Media 103).