The Distribution of the Narrow-mouthed Whorl Snail Vertigo angustior on Whiteford Burrows & Cwm Ivy Marsh - September 2021
Whiteford Burrows is a dune system lying on the north-west coast of the Gower Peninsula and is part of the much larger Carmarthen Bay Dunes/Twyni Bae Caerfyrddin SAC. The Narrow-mouthed Whorl Snail Vertigo angustior, listed on the EC Habitats & Species Directive Annex IIa, was first found on Whiteford Burrows in May 1983 - a new live record for the species not only in Wales but also in western Britain. Previous V. angustior studies have been carried out at this location between 1983 and 2018. It was suggested that further surveys be undertaken at the far north-east of the transition zone, throughout the main body of the dune system (focussing upon areas in damp hollows and on the margins of dune slacks where the water table is near the surface) and with a survey of the Cwm Ivy Marsh marine/terrestrial transition zone recently formed with the area now subject to tidal inflow.
- Identification
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- Distribution
- Quality
- Keywords
- Spatial Reference System
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- Metadata
Identification
- Identifier
- NRW_DS125526
- Metadata Language
- English
- Lineage
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Survey work was undertaken on three days, 27th to 29th September 2021. Survey locations were chosen with a focus on (1) the relatively recently established upper salt marsh transition zone of Cwm Ivy Marsh at the south and (2) areas not previously visited lying at the extreme north and and centre of the dunes and so avoiding the previous focus on the eastern saltmarsh / sand dune transition zone. A total of 29 sites were surveyed. Site survey involved: 1. visual examination of vegetation and ground litter; 2. beating vegetation onto a white gridded tray and examining debris with a X6 magnifier; 3. shaking dry moss and low growing fresh and dead plant material through a two-tier 2mm and 0.5mm sieve stack
- 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
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Database
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The data archive contains: The final report in Microsoft Word and Adobe PDF formats. Species records held in Welsh Invertebrate Database (WID).
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Database
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Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Survey work was undertaken on three days, 27th to 29th September 2021. Survey locations were chosen with a focus on (1) the relatively recently established upper salt marsh transition zone of Cwm Ivy Marsh at the south and (2) areas not previously visited lying at the extreme north and and centre of the dunes and so avoiding the previous focus on the eastern saltmarsh / sand dune transition zone. A total of 29 sites were surveyed. Site survey involved: 1. visual examination of vegetation and ground litter; 2. beating vegetation onto a white gridded tray and examining debris with a X6 magnifier; 3. shaking dry moss and low growing fresh and dead plant material through a two-tier 2mm and 0.5mm sieve stack
Keywords
Keywords
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NRW Thesaurus
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- Whiteford Burrows
- vertigo angustior
- Cwm Ivy Marsh SSSI
- narrow-mouthed whorl snail
- Type
- Theme
Citation
- Date (Publication)
- 2024-04-09
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
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Access Constraints Directive
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- no limitations
Access Constraints Text
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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
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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
- Open Government Licence (OGL)
Licence
- Other constraints
- Open Government Licence (OGL)
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313235353236 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:38:33.171Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0