A survey of rare coastal species of the moss genus Bryum in Wales in September 2015
This report presents the results of a 2015 survey of seven sand-dune systems in Wales to assess the status of three rare dune-slack moss species of the genus Bryum (B. calophyllum, B. knowltonii and B. warneum). The survey revisited sites previously surveyed in 2001 and assessed current distribution, population status and habitat condition. The report identifies continuing declines associated with the loss of early-successional dune-slack habitat, confirms the loss of B. calophyllum from its only known Welsh site, and highlights the importance of active dune processes and habitat management for the conservation of rare coastal bryophytes.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS125543
- Metadata Language
- English
- Lineage
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Field surveys were undertaken during September 2015 at seven Welsh sand-dune systems: Kenfig Burrows, Merthyr Mawr, Whiteford Burrows, Morfa Dyffryn, Morfa Harlech, Tywyn Aberffraw and Newborough Warren. Survey work focused on locating and assessing populations of Bryum calophyllum, B. knowltonii and B. warneum, and comparing findings with those from surveys undertaken in 2001. Site selection and habitat searches targeted early-successional dune-slack environments considered suitable for rare coastal Bryum species. Species records were collected through field observation, GPS location recording, habitat assessment, photography and voucher specimen collection. Population status, habitat condition and management measures were evaluated to assess factors influencing species persistence and colonisation opportunities within Welsh dune systems.
- Additional Information
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Holyoak DT 2015. A survey of rare coastal species of the moss genus Bryum in Wales in September 2015. NRW Evidence Report No: 133, 45 pp, Natural Resources Wales, Bangor.
- Dataset Reference Date (Publication)
- 2015-12-31
Temporal Extent
- Begin date
- 2015-01-01
- End date
- 2015-12-31
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
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Distribution
Distribution
- Format Type and Description
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Documents
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Unknown
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- Specification
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NRW Evidence Report No. 133 in Microsoft Word format
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Image
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Unknown
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- Specification
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Survey photographs of sites and species in JPEG format
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Documents
(
Unknown
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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
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
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Field surveys were undertaken during September 2015 at seven Welsh sand-dune systems: Kenfig Burrows, Merthyr Mawr, Whiteford Burrows, Morfa Dyffryn, Morfa Harlech, Tywyn Aberffraw and Newborough Warren. Survey work focused on locating and assessing populations of Bryum calophyllum, B. knowltonii and B. warneum, and comparing findings with those from surveys undertaken in 2001. Site selection and habitat searches targeted early-successional dune-slack environments considered suitable for rare coastal Bryum species. Species records were collected through field observation, GPS location recording, habitat assessment, photography and voucher specimen collection. Population status, habitat condition and management measures were evaluated to assess factors influencing species persistence and colonisation opportunities within Welsh dune systems.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- bryophyta (bryophytes) (muscineae) (See also mosses and liverworts)
- coastal ecology
- Type
- Theme
Citation
- Date (Publication)
- 2026-08-27
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- noLimitations
Access Constraints Text
- Other constraints
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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
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© 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.
Attribution Statement
- Other constraints
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313235353433 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-10-02T09:19:54.044Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0