Eryri Montane Lake Bryophyte Survey 2024
Rocks along the shores of montane lakes in Eryri have been found to be an important bryophyte habitat, supporting a range of rare and threatened bryophytes that grow only in this habitat.
Due to the limited niche of the species of this habitat, and in some cases very small populations, they are especially vulnerable to disturbance and a single disturbance event could lead to irreparable damage to or even loss of the Welsh population of some species. Therefore, it is of high importance to fully document the bryophyte flora of the shores of these montane lakes and identify rocks that support rare and important bryophytes and are vulnerable to disturbance.
Seven montane lakes within the Eryri SSSI were surveyed in September 2024, spread between the three main massifs of Yr Wyddfa, Glyderau and Carneddau.
Lakes were prioritised for survey based on the quality and quantity of recent bryophyte records. The full shore of each lake was walked and the locations of any rare or otherwise notable bryophytes encountered were recorded.
Important boulders were identified and documented, with any damage present noted. A full species list was recorded from the shore of each lake.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS161348
- Alternative Title
-
- Metadata Language
- English
- Lineage
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The field survey was undertaken over the course of five days between the 9th and 13th of September 2024. One site was visited on each day, resulting in the survey of a total of seven lakes, as three lakes are located within Cwm Clogwyn on Yr Wydffa, so could all be surveyed in one day.
- Additional Information
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Hodd, R.L. 2025. A survey of the bryophytes of the montane lakes of Eryri. NRW Evidence Report No: 879, 96pp, Natural Resources Wales.
- Dataset Reference Date (Creation)
- 2025-02-25
Temporal Extent
- Begin date
- 2024-09-01
- End date
- 2024-09-13
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
- Format Type and Description
-
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Delimited
(
Unknown
)
- Specification
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Excel Spreadsheet
-
Delimited
(
Unknown
)
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
-
The field survey was undertaken over the course of five days between the 9th and 13th of September 2024. One site was visited on each day, resulting in the survey of a total of seven lakes, as three lakes are located within Cwm Clogwyn on Yr Wydffa, so could all be surveyed in one day.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- inland waters
- Bryophyte monitoring
- Eryri
- Type
- Theme
Citation
- Date (Publication)
- 2025-01-08
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Text
- Other constraints
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Access restrictions on this data have not been determined. It may contain sensitive information and therefore may be restricted under legislation. NRW may provide access to this dataset on request, however NRW may not release, publish or disseminate the data or derived products freely without further assessment.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© CNC/NRW. Data may only be re-used externally under provision and in line with the terms of a NRW licence following an assessment of the data.
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