Eryri Montane Lake Bryophyte Survey 2024
Arolwg Bryoffyt Llyn Eryri 2024

  • English
  • wel
  • All

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

Dynodydd
Identifier
NRW_DS161348
Teitl Amgen
Alternative Title
Laith Metadata
Metadata Language
English
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.
Additional Information

Hodd, R.L. 2025. A survey of the bryophytes of the montane lakes of Eryri. NRW Evidence Report No: 879, 96pp, Natural Resources Wales.
Dyddiad cyfeirnod y set ddata (Creu)
Dataset Reference Date (Creation)
2025-02-25
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2026-09-10

Temporal Extent

Begin date
2024-09-01
End date
2024-09-13
 
Categori pwnc
Topic category
  • Biota
    Biota
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Nimbosa Ecology -
N/A , N/A
http://www.botanicalenvironmental.com/staff-3/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Delimited ( Unknown )

    Specification

    Excel Spreadsheet

  • Documents ( Unknown )

    Specification

    NRW Evidence Report in word or pdf format

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
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

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

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

NRW Thesaurus
  • inland waters
  • Bryophyte monitoring
  • Eryri
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG:27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
noLimitations
 

Access Constraints Text

Other constraints

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

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
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.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313631333438 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-09-28T14:25:37.258Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales -
Maes y Ffynnon , Bangor , LL57 2DW , Wales
 
 

Publishing Body

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