A survey of calaminarian grassland in Mid-Wales

The aims of this project were to refine guidance on calaminarian habitat definition for mid-Wales, and to provide data and information on the extent of the different forms. The purpose of this data capture was to assess calaminarian grassland habitat types, condition and extent for each site, and to gather information on the distribution and frequency of metallophytes and other notable species. This was done by detailed survey of the plants and lichens of the calaminarian grasslands on 27 abandoned mine sites in mid-Wales, 26 in Ceredigion and 1 in Montgomeryshire, with mapping of the compartments in GIS. A wide variation in the character of calaminarian habitat was observed, including grass-dominated examples, metallophyte-rich heathland and largely-bare highly-contaminated land. Some of the vegetation was considered distinctive in both a British and European context. A total of 90 vascular plants, 38 bryophytes, 227 lichens and 15 lichenicolous fungi were recorded, including many species of conservation concern. Categories of calaminarian habitat types in mid Wales are presented, to facilitate future mapping of the habitat.

Identification

Identifier
NRW_DS116527
Alternative Title
  • Mapio glaswelltir calaminaraidd yng Nghanolbarth Cymru (2014)
Metadata Language
English
Lineage

Vegetation compartments (including rock and bare ground) were mapped on site by walkover survey, using a satellite image to identify boundaries. Those that appeared to have been influenced by heavy metals were surveyed for all vascular plant, lichen and bryophyte taxa by recording those present in three representative areas of each compartment, supplemented by a more thorough search for metallophytes and other taxa indicative of habitat quality. Abundance was recorded using the DAFOR scale.
Additional Information

Survey of calaminarian grassland in mid-Wales March 2016 NRW Evidence report 061.
Dataset Reference Date (Publication)
2016-03-30
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Simkin
41 North Road, Ponteland, Newcastle upon Tyne, NE20 9UN
<!-- No web site -->
 

Extent

Extent

Geographic Extent
Montgomeryshire (47)
Geographic Extent
SIR CEREDIGION - CEREDIGION
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Format Type and Description
  • Documents ()

    Specification

    [A] ArcGIS layers [B] Excel spreadsheets: Lichen records are held in the British Lichen Society database and will be available on the NBN Gateway by autumn 2016.

 

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 compartments (including rock and bare ground) were mapped on site by walkover survey, using a satellite image to identify boundaries. Those that appeared to have been influenced by heavy metals were surveyed for all vascular plant, lichen and bryophyte taxa by recording those present in three representative areas of each compartment, supplemented by a more thorough search for metallophytes and other taxa indicative of habitat quality. Abundance was recorded using the DAFOR scale.
 

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
  • Site of Special Scientific Interest (SSSI)
  • lichens
  • lead mining
Type
Theme

Citation

Date (Publication)
2023-12-31
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

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 on 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
4f4c4942-4343-5764-6473-313136353237 XML
Metadata Language
English
Resource type
Dataset
Metadata Date
2024-05-31T09:41:22.888Z
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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