SoDdGA Gweunydd Nant y Twyn - Arolwg Dosbarthiad Llystyfiant Cenedlaethol (2024)
A standard Phase 2 NVC survey was undertaken at Gweunydd Nant y Twyn as part of the Site of Special Scientific Interest (SSSI) designation process.
Gweunydd Nant y Twyn consists of a cluster of small fields, with tall, wooded hedgerows. The site is of particular importance for bryophytes.
The site comprises the original Phase 2 site survey site of Mockridge et al. 1998, which has now been resurveyed (2024) and extended to include several contiguous small fields, and a further extension centred on 5 small nearby fields, approximately 1/3rd of a km to the north, linked by a block of woodland and pasture. The total area of the Phase 2 survey site is now 39.9ha.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS161349
- Teitl Amgen
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- Laith Metadata
- English
- Datganiad
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Standard National Vegetation Classification (NVC) survey techniques were used. The survey was carried out in-house by Natural Resources Wales (NRW) staff.
Note, the Phase 2 survey site boundary does not coincide with the Gweunydd Nant y Twyn SSSI boundary, which excludes certain fields of more modified grassland.
Gweunydd Nant y Twyn GIS data has been added to the Phase 2 Lowland Grassland Survey. One of the files contains sensitive species but this has been redacted before being published.
- Gwybodaeth ychwanegol
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Westwood, S. & Bosanquet, S. 2025. NRW Lowland Grassland Survey and Site Description of ST 19/17 Gweunydd Nant y Twyn Revisit and New Annex. NRW Report No: 864, 25pp, Natural Resources Wales, Cardiff.
- Dyddiad cyfeirnod y set ddata (Creu)
- 2025-03-06
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2025-09-23
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
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Documents
(
Unknown
)
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Geographic Information System
(
Unknown
)
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Image
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Unknown
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Documents
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Unknown
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- Lleolwr Adnoddau
- Download Data & Web Services ( WWW:LINK-1.0-http--link )
- Lleolwr Adnoddau
- Web Mapping Service ( OGC:WMS )
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- 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
- Eglurhad
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
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Standard National Vegetation Classification (NVC) survey techniques were used. The survey was carried out in-house by Natural Resources Wales (NRW) staff.
Note, the Phase 2 survey site boundary does not coincide with the Gweunydd Nant y Twyn SSSI boundary, which excludes certain fields of more modified grassland.
Gweunydd Nant y Twyn GIS data has been added to the Phase 2 Lowland Grassland Survey. One of the files contains sensitive species but this has been redacted before being published.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
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- lowland grassland
- National Vegetation Classification (NVC)
- SSSI (Sites of Special Scientific Interest)
- Phase 2 Survey (Phase II)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-03-04
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- noLimitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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Part of this dataset is sensitive, and access may be restricted under relevant legislation. NRW may NOT publish or disseminate the sensitive data. Requests should be referred to NRW's Access to Information Officer. However, there are no access restrictions on non-sensitive data. NRW may release, publish or disseminate a redacted version of the data freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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© CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right. NRW does NOT grant permission to third parties to re-use or disseminate the full dataset. A redacted version of the 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.
Datganiad Priodoli
- Cyfyngiadau eraill
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313631333439 XML
- Laith Metadata
- English
- Dynodydd Rhiant
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Phase 2 Lowland Grassland Survey of Wales
NRW_DS46160
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-04-22T15:21:56.26Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0