cc7f227b-661c-4599-b73a-e08d79cdea0f SSSI NH3 Critical Levels 2022-08-03 Natural Resources Wales environment 51.32295752628176 53.45285408717167 -5.812822631272019 -2.643500733367853 en This layer provides a Critical Level (CLe) for ammonia against which impacts on a SSSI should be assessed. The value is the lowest CLe for a feature on that site. The layer gives the SSSI name, SSSI code and ammonia Critical Level. The ammonia CLe can be: 1: a 1µg/m3 NH3 Critical Level indicates a SSSI has N-sensitive bryophytes/lichens as a feature or has bryophytes/lichens as key components of a habitat feature of that SSSI; 3: a 3µg/m3 NH3 Critical Level indicates a SSSI has N-sensitive vegetation, or has invertebrate features that are dependent on N-sensitive vegetation; NS: all features on a site are considered not to be particularly sensitive to ammonia; this does not mean that other aspects of a development will not have negative impacts on a SSSI, for example through water pollution or disturbance. Attribution statement 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. 2022-08-03 OGC:WFS https://datamap.gov.wales/geoserver/ows OGC WFS: geonode Service OGC:WMS https://datamap.gov.wales/geoserver/ows OGC WMS: geonode Service WWW:DOWNLOAD-1.0-http--download /static/geonode/img/missing_thumb.png?v=540ff3a0 SSSI NH3 Critical Levels (Thumbnail Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetLegendGraphic&format=image/png&WIDTH=20&HEIGHT=20&LAYER=geonode:nrw_sssi_nh3_cl&STYLE=polygon&version=1.3.0&sld_version=1.1.0&legend_options=fontAntiAliasing:true;fontSize:12;forceLabels:on SSSI NH3 Critical Levels (Legend Format) WWW:LINK-1.0-http--link https://datamap.gov.wales/layers/geonode:nrw_sssi_nh3_cl Web address (URL) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=json&srs=EPSG%3A27700&srsName=EPSG%3A27700 SSSI NH3 Critical Levels (GeoJSON Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=excel&srs=EPSG%3A27700 SSSI NH3 Critical Levels (Excel Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=csv&srs=EPSG%3A27700 SSSI NH3 Critical Levels (CSV Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=text%2Fxml%3B+subtype%3Dgml%2F3.1.1&srs=EPSG%3A27700 SSSI NH3 Critical Levels (GML 3.1.1 Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=gml2&srs=EPSG%3A27700 SSSI NH3 Critical Levels (GML 2.0 Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=dxf&srs=EPSG%3A27700 SSSI NH3 Critical Levels (DXF Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=gpkg&srs=EPSG%3A27700 SSSI NH3 Critical Levels (OGC Geopackage Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WFS&version=1.0.0&request=GetFeature&typename=geonode%3Anrw_sssi_nh3_cl&outputFormat=SHAPE-ZIP&srs=EPSG%3A27700&format_options=charset%3AUTF-8 SSSI NH3 Critical Levels (Zipped Shapefile Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Anrw_sssi_nh3_cl&format=image%2Fpng&height=550&width=497&srs=EPSG%3A27700&bbox=146598.546875%2C164494.21875%2C355308.90625%2C395333.71875 SSSI NH3 Critical Levels (PNG Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Anrw_sssi_nh3_cl&format=application%2Fpdf&height=550&width=497&srs=EPSG%3A27700&bbox=146598.546875%2C164494.21875%2C355308.90625%2C395333.71875 SSSI NH3 Critical Levels (PDF Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/geoserver/ows?service=WMS&request=GetMap&layers=geonode%3Anrw_sssi_nh3_cl&format=image%2Fjpeg&height=550&width=497&srs=EPSG%3A27700&bbox=146598.546875%2C164494.21875%2C355308.90625%2C395333.71875 SSSI NH3 Critical Levels (JPEG Format) WWW:DOWNLOAD-1.0-http--download https://datamap.gov.wales/download/3583 SSSI NH3 Critical Levels (Original dataset Format) CEOS IDN DIF 9.7