4f4c4942-4343-5764-6473-313234373633 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-20T15:46:16.122Z NRW 1.0 wel British National Grid (EPSG::27700) NH3 Sensitive Ancient Woodlands NH3 Sensitive Ancient Woodlands Coetiroedd Hynafol Sensitif o ran NH3 Ammonia Sensitive Ancient Woodlands NH3 sensitive Ancient Woodlands.lyr N Sensitive Wood_Parks Lichens Bryophytes 2022-08-03 NRW_DS124763 This layer identifies areas of Ancient Woodland and Parkland from which NRW hold recent, auditable records of N-sensitive lichens. Not all lichens are sensitive to increased ammonia: the 62 species used to identify N-sensitive Ancient Woodland and Parkland are particularly sensitive and are important in the woodland/parkland ecosystem. Any area identified as sensitive in this GIS layer should be assessed using a 1µg/m3 NH3 Critical Level. This layer identifies areas of Ancient Woodland and Parkland from which NRW hold recent, auditable records of N-sensitive lichens. Not all lichens are sensitive to increased ammonia: the 62 species used to identify N-sensitive Ancient Woodland and Parkland are particularly sensitive and are important in the woodland/parkland ecosystem. Any area identified as sensitive in this GIS layer should be assessed using a 1µg/m3 NH3 Critical Level. 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 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 Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme ancient woodland (ancient trees) (veteran trees) lichens NRW Thesaurus 2026-03-20 geonetwork.thesaurus.local.theme.converted_nrw-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. 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. Open Government Licence (OGL) 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. English environment SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 2000-01-01 2021-01-23 Geographic Information System ESRI Feature Class https://datamap.gov.wales/layers/geonode:nrw_n_sensitive_wood View and Download World Wide Web page https://datamap.gov.wales/capabilities/layer/3513/?access_token=67k4GhAr91AqiAXnyngsm3l40RrZII&ows_service=wms Web Service World Wide Web page 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 false The dataset is based on the Ancient Woodland Inventory 2011 (https://libcat.naturalresources.wales/folio/?oid=116442) and Cadw: Historic Parks and Gardens (https://libcat.naturalresources.wales/folio/?oid=111947), with polygons selected if they contain a recent record of one of 62 N-sensitive lichens using lichen data from the British Lichen Society. The dataset is based on the Ancient Woodland Inventory 2011 (https://libcat.naturalresources.wales/folio/?oid=116442) and Cadw: Historic Parks and Gardens (https://libcat.naturalresources.wales/folio/?oid=111947), with polygons selected if they contain a recent record of one of 62 N-sensitive lichens using lichen data from the British Lichen Society.