Surveys for Desmoulin’s Whorl Snail Vertigo moulinsiana on Cors Geirch SSSI, Geyer’s Whorl Snail Vertigo geyeri on Cors Geirch SSSI & Cors Erddreiniog SSSI, 2019
Geyer’s Whorl Snail Vertigo geyeri has been recorded from three sites in Wales. However, surveys of Cors Erddreiniog SSSI in 2016 and of Cors Geirch SSSI in 2016 and 2017 failed to locate the snail. It was feared that V. geyeri had been lost from both sites but, as small populations of this tiny snail can easily be overlooked, it was felt premature to declare the snail as extinct and additional surveys were therefore undertaken at both sites in October 2019. The survey focussed upon two areas of potentially suitable habitat that had been recently surveyed; (1) an area of horse-grazed ‘Carex-lawn’ within the National Nature Reserve where V. geyeri had been reported in 1998 and (2) a series of base-rich flushes lying towards the western end of the National Nature Reserve last surveyed in 2016.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS124734
- Metadata Language
- English
- Lineage
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Surveys for Vertigo geyeri were undertaken on Cors Erddreiniog on 14th and 16th October 2019 (Figures 2 & 3) and on Cors Geirch (Figure 4) on 15th October 2019. Sampling relied primarily upon the well-established technique of selecting potentially suitable habitat and then removing sample material for later laboratory processing as this tiny snail is typically very difficult to locate in the field.
- Additional Information
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Willing, M. J. 2020. Surveys for Desmoulin’s Whorl Snail Vertigo moulinsiana on Cors Geirch SSSI and for Geyer’s Whorl Snail Vertigo geyeri on Cors Geirch SSSI & Cors Erddreiniog SSSI in 2019. NRW Evidence Report No. 404.
- Dataset Reference Date (Publication)
- 2020-02-01
Extent
Extent
- Geographic Extent
- Wales (WLS)
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Distribution
- Format Type and Description
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Database
()
- Specification
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[A] Database: records held in WID [B] Documents: pdf of the report in the DMS report archive.
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Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Surveys for Vertigo geyeri were undertaken on Cors Erddreiniog on 14th and 16th October 2019 (Figures 2 & 3) and on Cors Geirch (Figure 4) on 15th October 2019. Sampling relied primarily upon the well-established technique of selecting potentially suitable habitat and then removing sample material for later laboratory processing as this tiny snail is typically very difficult to locate in the field.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- Desmoulin's whorl snail
- vertigo moulinsiana
- whorl snails
- vertigo moulinsiana
- geyer's whorl snail
- vertigo geyeri
- Cors Geirch
- Cors Erddreiniog
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
- Code
- NONE
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Surveys for Geyer’s Whorl Snail Vertigo geyeri on Cors Erddreiniog SSSI & Cors Geirch SSSI and for Desmoulin’s Whorl Snail Vertigo moulinsiana on Cors Geirch SSSI in 2019
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
- Open Government Licence (OGL)
Licence
- Other constraints
- Open Government Licence (OGL)
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313234373334 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:41:08.121Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0