The Distribution of the Narrow-mouthed Whorl Snail Vertigo angustior on Whiteford Burrows & Cwm Ivy Marsh - September 2021
Whiteford Burrows is a dune system on the north-west coast of the Gower Peninsula and forms part of the Carmarthen Bay Dunes/Twyni Bae Caerfyrddin Special Area of Conservation (SAC). The Narrow-mouthed Whorl Snail (Vertigo angustior), an Annex II species under the Habitats Directive, was first recorded at Whiteford Burrows in 1983, representing the first live record for Wales and western Britain. Previous surveys have been undertaken at the site between 1983 and 2018. This 2021 survey was carried out to improve understanding of the species' distribution within the dune system, including areas not previously surveyed and the recently established marine-terrestrial transition zone at Cwm Ivy Marsh. A total of 29 survey locations were assessed across Whiteford Burrows and Cwm Ivy Marsh between 27 and 29 September 2021.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS125526
- Metadata Language
- English
- Lineage
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Survey work was undertaken between 27 and 29 September 2021 at 29 locations within Whiteford Burrows and Cwm Ivy Marsh. Survey sites were selected to investigate the recently established upper saltmarsh transition zone at Cwm Ivy Marsh and previously unsurveyed areas within the northern and central parts of the dune system. Field survey methods included visual examination of vegetation and ground litter; beating vegetation onto a white gridded tray and examining collected material using a ×6 magnifier; and sieving dry moss together with fresh and dead plant material through a two-tier 2 mm and 0.5 mm sieve stack. Survey results were used to determine the presence and distribution of Vertigo angustior within suitable habitat.
- Additional Information
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Willing, M.J. 2023. The distribution of the Narrow-mouthed Whorl Snail Vertigo angustior on Whiteford Burrows & Cwm Ivy Marsh in September 2021. NRW Evidence Report No. 698. 47pp. Natural Resources Wales, Bangor.
- Dataset Reference Date (Publication)
- 2023-06-01
Temporal Extent
- Begin date
- 2021-09-27
- End date
- 2021-09-29
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- ABERTAWE - SWANSEA
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Vertical Extent
- Medin Extent Keyword
Distribution
Distribution
- Format Type and Description
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Database
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Unknown
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- Specification
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Species records: Recorder 6
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Documents
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Unknown
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- Specification
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Report in pdf format
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Database
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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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Survey work was undertaken between 27 and 29 September 2021 at 29 locations within Whiteford Burrows and Cwm Ivy Marsh. Survey sites were selected to investigate the recently established upper saltmarsh transition zone at Cwm Ivy Marsh and previously unsurveyed areas within the northern and central parts of the dune system. Field survey methods included visual examination of vegetation and ground litter; beating vegetation onto a white gridded tray and examining collected material using a ×6 magnifier; and sieving dry moss together with fresh and dead plant material through a two-tier 2 mm and 0.5 mm sieve stack. Survey results were used to determine the presence and distribution of Vertigo angustior within suitable habitat.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- Whiteford Burrows
- narrow-mouthed whorl snail
- vertigo angustior
- Cwm Ivy Marsh SSSI
- Type
- Theme
Citation
- Date (Publication)
- 2026-08-27
Spatial Reference System
- Code
- NONE
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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The Distribution of the Narrowmouthed Whorl Snail Vertigo angustior on Whiteford Burrows & Cwm Ivy Marsh in September 2021
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
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
- 4f4c4942-4343-5764-6473-313235353236 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2026-09-29T14:37:14.625Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0