4f4c4942-4343-5764-6473-313138393735 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-03-20T15:52:20.568Z NRW 1.0 wel British National Grid (EPSG::27700) Mapping the Extent of Calaminarian Grassland at Mwyngloddfa Cwmystwyth SSSI 2016/2017 Mapping the Extent of Calaminarian Grassland at Mwyngloddfa Cwmystwyth SSSI 2016/2017 Maint Glaswelltir Metelaidd yn SoDdGA Mwyngloddfa Cwmystwyth 2017-03-31 NRW_DS118975 The project aims to map the extent of the Annex 1 type 'H6130 Calaminarian grasslands of the Violetalia calaminariae' (Calaminarian grassland) on Mwyngloddfa Cwmystwyth Site of Special Scientific Interest (SSSI) and the adjacent area of Elenydd SSSI in Ceredigion. The habitat here includes examples where Calaminarian grassland is characterised largely by the presence of metallophyte lichen species, although metallophyte bryophytes and vascular plants also indicate some forms of the community here. This survey built on previous work (Simkin, 2014) that sought to produce a more detailed categorisation of the habitat in mid Wales. This established that different forms of the habitat existed which were variously typified by metallophyte-rich spoil, grassland and heathland, as well as areas that were largely denuded of vegetation (bare, highly contaminated spoil). The project aims to map the extent of the Annex 1 type 'H6130 Calaminarian grasslands of the Violetalia calaminariae' (Calaminarian grassland) on Mwyngloddfa Cwmystwyth Site of Special Scientific Interest (SSSI) and the adjacent area of Elenydd SSSI in Ceredigion. The habitat here includes examples where Calaminarian grassland is characterised largely by the presence of metallophyte lichen species, although metallophyte bryophytes and vascular plants also indicate some forms of the community here. This survey built on previous work (Simkin, 2014) that sought to produce a more detailed categorisation of the habitat in mid Wales. This established that different forms of the habitat existed which were variously typified by metallophyte-rich spoil, grassland and heathland, as well as areas that were largely denuded of vegetation (bare, highly contaminated spoil). 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 Chris Forster Brown Chris Forster Brown, Tremfor, Taliesin, Machynlleth, SY20 8JG chrisforsterbrown@btinternet.com Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme metallophyte SSSI (Sites of Special Scientific Interest) Cwmystwyth Mine lichens lead mining NRW Thesaurus 2026-03-20 geonetwork.thesaurus.local.theme.converted_nrw-keywords There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations © CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. 10 12500 English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 SIR CEREDIGION - CEREDIGION -3.7629 -3.7444 52.35321 52.3624 2017-03-18 2017-03-24 Forster Brown C., Chambers S.P. 2017. Mapping the extent of calaminarian grassland at Mwyngloddfa Cwmystwyth SSSI. NRW Evidence Report No: 203, 29pp, NRW, Bangor. Lichen records are also held in the British Lichen Society database and will be available on the NBN Atlas. Defining and mapping calaminarian grassland in mid Wales A survey of calaminarian grassland in mid-Wales - CONFIDENTIAL Geographic Information System [A] The final report in Microsoft Word and Adobe PDF formats, [B] A full set of maps produced either in pdf or jpg format, digitised by NRW staff in ESRI Arc format and stored on NRW corporate drives, [C] A spreadsheet of lichen species data, [D] A full set of images produced in jpg format. https://registry.nbnatlas.org/public/show/dp30 View and Download Data 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 Vegetation (including rock and bare ground) was mapped on site by walkover survey onto copies of aerial photographs. Areas that appeared to have been influenced by heavy metals were surveyed, focussed on metallophytes species. Calaminarian grassland was mapped in line with the categories defined by Simkin (2014). All observations were made by experienced surveyors following standard methodologies. Vegetation (including rock and bare ground) was mapped on site by walkover survey onto copies of aerial photographs. Areas that appeared to have been influenced by heavy metals were surveyed, focussed on metallophytes species. Calaminarian grassland was mapped in line with the categories defined by Simkin (2014). All observations were made by experienced surveyors following standard methodologies.