4f4c4942-4343-5764-6473-313030313936 English NRW_DS24715 Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2025-02-04T10:38:56.858Z NRW 1.0 wel British National Grid (EPSG::27700) All Wales Phase 1 Terrestrial - Vegetation Layer All Wales Phase 1 Terrestrial - Vegetation Layer Cam 1 Daearol Cymru Gyfan - llystyfiant Phase1 Vegetation.lyr Ph1 Terr All Wales - Veg 2014-06-01 NRW_DS100196 This is a spatial dataset containing polygon layers showing the boundaries and attributes of vegetation polygons. In 2014 the data were cleaned by NRW's Terrestrial Mapping Specialist, to rectify the line work issues, and the resolution was set to 0.5 m. Polygon attributes include Phase 1 habitat code(s), information on scattered vegetation uniformly distributed across an entire polygon, acid flush present in patches too small to map individually, dominant species codes, habitats in re-vegetated quarry and spoil, whether it was apparent from the OS Landline maps at the time of digitising in 2000-2002 that habitat loss had occurred, name of Upland Vegetation Survey site (or site-complex), whether polygon is upland or lowland, polygon area. The original field surveys were carried out as part of a national habitat survey programme required to implement conservation at a local level. The all-Wales electronic dataset was created for the generation of national statistics on habitat coverage. The dataset was subsequently imported into a GIS to enable its disaggregation into various different geographical regions within Wales. About 30 percent of upland polygons are mixed habitat with no information on habitat proportions. A voronoi version of the vegetation layer has been created to help address this (see metadata for All Wales Phase 1 Terrestrial - Vegetation Layer voronoi - GIS dataset). This is a spatial dataset containing polygon layers showing the boundaries and attributes of vegetation polygons. In 2014 the data were cleaned by NRW's Terrestrial Mapping Specialist, to rectify the line work issues, and the resolution was set to 0.5 m. Polygon attributes include Phase 1 habitat code(s), information on scattered vegetation uniformly distributed across an entire polygon, acid flush present in patches too small to map individually, dominant species codes, habitats in re-vegetated quarry and spoil, whether it was apparent from the OS Landline maps at the time of digitising in 2000-2002 that habitat loss had occurred, name of Upland Vegetation Survey site (or site-complex), whether polygon is upland or lowland, polygon area. The original field surveys were carried out as part of a national habitat survey programme required to implement conservation at a local level. The all-Wales electronic dataset was created for the generation of national statistics on habitat coverage. The dataset was subsequently imported into a GIS to enable its disaggregation into various different geographical regions within Wales. About 30 percent of upland polygons are mixed habitat with no information on habitat proportions. A voronoi version of the vegetation layer has been created to help address this (see metadata for All Wales Phase 1 Terrestrial - Vegetation Layer voronoi - GIS dataset). Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Countryside Council for Wales (CCW) Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Habitats and biotopes GEMET - INSPIRE themes, version 1.0 GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme geographical information systems (GIS) vegetation surveys (vegetation monitoring)(see also biologicalsurveys) lowlands future of the uplands NRW Thesaurus NRW Thesaurus 2024-06-19 geonetwork.thesaurus.local.theme.converted_nrw-keywords SeaDataNet Parameter Discovery Vocabulary SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml IPSV Subjects List IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects NRW SMNR Keywords NRW SMNR Keywords 2024-06-26 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords There are no access restrictions on this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right. Open Government Licence 10000 English environment farming SeaVoX Vertical Co-ordinate Coverages SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 1979-01-01 2014-06-01 Upland vegetation survey 1979-1989 : background, methodology and summary of data collected Supplementary notes for phase 1 survey in Wales An assessment of errors in Phase I habitat survey in Wales. Confidential Geographic Information System ESRI Feature Class 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 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false The Field survey spanned from 1979 to 1999. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1 - 0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor). Methods for the lowland survey followed the Handbook for Phase 1 Habitat Survey with some minor modifications adopted for use in Wales (Howe E.A. and Blackstock T.H. (1991) Supplementary Notes for Phase I Survey in Wales. CCW, Bangor). All field mapping was carried out by trained and closely co-ordinated teams of surveyors. A study of survey reliability was conducted during the lowland phase (Kerry, Rimes, Smith, Williams. 1994. An Assessment of Errors in Phase I Habitat Survey in Wales. Bangor: Countryside Council for Wales, Report No. 94/4/1). It showed the field mapping to be 83% repeatable (Stevens, Blackstock, Howe, Stevens. 2004. Repeatability of Phase 1 habitat survey. J. Environ. Manage. 73, 53-59).The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW. The Field survey spanned from 1979 to 1999. Closely co-ordinated teams of surveyors carried out field recording of habitats onto 1:10,000 scale maps (rarely 1:25,000 during the upland stage). The minimum size of habitat patch recorded lies predominantly within the range 0.1 - 0.25 ha, although smaller areas were mapped in the lowlands. The survey methods employed during the initial upland stage are given in more detail in a WFU report (Day, A. (1989) Upland Vegetation Survey 1979-1989 Background Methodology and Summary of Data Collected. NCC, Bangor). Methods for the lowland survey followed the Handbook for Phase 1 Habitat Survey with some minor modifications adopted for use in Wales (Howe E.A. and Blackstock T.H. (1991) Supplementary Notes for Phase I Survey in Wales. CCW, Bangor). All field mapping was carried out by trained and closely co-ordinated teams of surveyors. A study of survey reliability was conducted during the lowland phase (Kerry, Rimes, Smith, Williams. 1994. An Assessment of Errors in Phase I Habitat Survey in Wales. Bangor: Countryside Council for Wales, Report No. 94/4/1). It showed the field mapping to be 83% repeatable (Stevens, Blackstock, Howe, Stevens. 2004. Repeatability of Phase 1 habitat survey. J. Environ. Manage. 73, 53-59).The electronic data have undergone a series of checks for accuracy both by the contractor and subsequently within CCW.