Mapping the Extent of Calaminarian Grassland at Mwyngloddfa Cwmystwyth SSSI 2016/2017

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).

Identification

Identifier
NRW_DS118975
Alternative Title
  • Maint Glaswelltir Metelaidd yn SoDdGA Mwyngloddfa Cwmystwyth
Metadata Language
English
Lineage

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.
Additional Information

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.
Dataset Reference Date (Publication)
2017-03-31
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Chris Forster Brown -
Chris Forster Brown, Tremfor, Taliesin, Machynlleth, SY20 8JG
 

Extent

Extent

Geographic Extent
SIR CEREDIGION - CEREDIGION
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Distribution

Format Type and Description
  • Geographic Information System ( )

    Specification

    [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.

Resource Locator
View and Download Data

World Wide Web page

 

Quality

Data quality

Quality Scope
Dataset
Conformity
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
Explanation
Degree
false
Lineage

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.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • metallophyte
  • SSSI (Sites of Special Scientific Interest)
  • Cwmystwyth Mine
  • lichens
  • lead mining
Type
Theme

Citation

Date (Publication)
2026-03-20
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

Defining and mapping calaminarian grassland in mid Wales
NRW Related Title

A survey of calaminarian grassland in mid-Wales - CONFIDENTIAL
 

Constraints

Constraints

Limitations on Public Access and Use

Restriction type
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© 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.
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313138393735 XML
Metadata Language
English
Resource type
Dataset
Metadata Date
2026-03-20T15:52:20.568Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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