Welsh saxicolous lichen and bryophyte community data from a survey of upland Britain
The British uplands have two groups of lichen species of outstanding conservation interest: 1) species of western oceanic areas and 2) species of calcareous rock at high altitudes. Phytosociological data were collected to describe the terrestrial lichen and bryophyte vegetation of rock or saxicolous habitats within 14 Special Areas of Conservation (SAC) within upland Britain, with special reference to four saxicolous habitats listed in Annex I of the EU Habitats Directive. Natural Resources Wales (NRW) holds the Welsh data as well as copies of the project report. The work aimed to improve our knowledge of the lichen and bryophyte communities of rock habitats in upland Great Britain, with particular regard to certain habitats, which have importance in nature conservation legislation. The work had the following main objectives: 1. To describe the lower plant assemblages of Annex I rock habitats in selected sites, which are Special Areas of Conservation (SACs). 2. To provide a preliminary classification of the lower plant communities of rock habitats in upland Britain (excluding freshwater habitats). These objectives were achieved by extensive sampling of rock habitats, using phytosociological methods, within selected SACs. Those visited were, in Wales: Brecon Beacons, Cadair Idris, Eryri and Berwyn and South Clwyd Mountains.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS111150
- Metadata Language
- English
- Lineage
-
14 SACs across Britain were surveyed and a number of additional samples were collected from three additional sites for incorporation into the analysis. All types of saxicolous vegetation were regarded as suitable for sampling, except freshwater habitats and stands dominated by vascular plants. Extensive sampling of rock habitats was carried out using standard phytosociological methods as outlined by Rodwell (1991-2000). Data collected were analysed by two-way indicator species analysis implemented by the computer programme TWINSPAN.
- Additional Information
-
Phytosociology is the branch of science which deals with plant communities, their composition and development, and the relationships between the species within these compositions.
- Dataset Reference Date (Publication)
- 2009-01-31
Temporal Extent
- Begin date
- 1998-01-01
- End date
- 2008-12-31
- Topic category
-
- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
- Format Type and Description
-
-
Documents
()
- Specification
-
[A] The final report in Microsoft Word and Adobe PDF formats. [B] Raw data workbook in excel format containing quadrat data and floristic tables.
-
Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
14 SACs across Britain were surveyed and a number of additional samples were collected from three additional sites for incorporation into the analysis. All types of saxicolous vegetation were regarded as suitable for sampling, except freshwater habitats and stands dominated by vascular plants. Extensive sampling of rock habitats was carried out using standard phytosociological methods as outlined by Rodwell (1991-2000). Data collected were analysed by two-way indicator species analysis implemented by the computer programme TWINSPAN.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- lichens
- bryophyta (bryophytes) (muscineae) (See also mosses and liverworts)
- uplands
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- South Clwyd Mountains
- Berwyn Mountains (Y Berwyn)
- Snowdonia (Eryri)
- Cadair Idris (Cader Idris)
- Brecon Beacons
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Saxicolous lichen and bryophyte communities in upland Britain
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
This data is jointly owned by NRW, Natural ENgland (NE) and Scottish Natural Heritage (SNH) 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, NE and SNH 2009 There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and the copyright of NRW/ NE / SNH and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313131313530 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:43:54.108Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0