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 only three sites in Wales. Surveys undertaken at Cors Erddreiniog SSSI in 2016 and at Cors Geirch SSSI in 2016 and 2017 failed to locate the species, raising concerns that it may have been lost from both sites. However, given the small size of the snail and the possibility that low-density populations may be easily overlooked, further surveys were undertaken in October 2019 to reassess its status. Survey effort focused on areas of potentially suitable habitat at both sites, including a horse-grazed Carex lawn within Cors Erddreiniog National Nature Reserve where the species had previously been recorded, and a series of base-rich flushes. The survey aimed to determine whether Vertigo geyeri remains present and to improve understanding of its current distribution within these important wetland habitats.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
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DynodyddIdentifier
- NRW_DS124734
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Laith MetadataMetadata Language
- English
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Lineage
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Surveys for Geyer’s Whorl Snail (Vertigo geyeri) were undertaken at Cors Erddreiniog on 14 and 16 October 2019 and at Cors Geirch on 15 October 2019. Sampling focused on areas of potentially suitable habitat identified from previous surveys. Survey methodology primarily involved the collection of vegetation and litter samples from suitable habitat for subsequent laboratory processing, as the species is small and can be difficult to detect during field surveys. Sample material was examined to determine the presence or absence of Vertigo geyeri and to assess its distribution within the surveyed areas.
- 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.
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Dyddiad cyfeirnod y set ddata (Cyhoeddiad)Dataset Reference Date (Publication)
- 2020-02-01
Temporal Extent
- Begin date
- 2019-10-14
- End date
- 2019-10-16
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Categori pwncTopic category
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BiotaBiota
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Extent
Extent
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HydGeographic Extent
- Wales (WLS)
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Distribution
Dosbarthiad
Distribution
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Fformat - Math a DisgrifiadFormat Type and Description
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Database
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Unknown
)
- Specification
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Species records: Recorder 6
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Documents
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Unknown
)
- Specification
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Report as pdf format
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Database
(
Unknown
)
Quality
Ansawdd Data
Data quality
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Cwmpas AnsawddQuality Scope
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DatasetDataset
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CydymffurfiadConformity
- 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
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Lineage
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Surveys for Geyer’s Whorl Snail (Vertigo geyeri) were undertaken at Cors Erddreiniog on 14 and 16 October 2019 and at Cors Geirch on 15 October 2019. Sampling focused on areas of potentially suitable habitat identified from previous surveys. Survey methodology primarily involved the collection of vegetation and litter samples from suitable habitat for subsequent laboratory processing, as the species is small and can be difficult to detect during field surveys. Sample material was examined to determine the presence or absence of Vertigo geyeri and to assess its distribution within the surveyed areas.
Keywords
Allweddair
Keywords
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2008-06-01
Allweddair
Keywords
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NRW Thesaurus
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- Desmoulin's whorl snail
- geyer's whorl snail
- Cors Geirch
- vertigo geyeri
- Cors Erddreiniog
- vertigo moulinsiana
- vertigo moulinsiana
- whorl snails
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2026-08-27
Spatial Reference System
- Code
- NONE
Content
Gwybodaeth Cynnwys
Content Information
Proffil CNC
NRW Profile
Elfennau CNC
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
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Math o GyfyngiadRestriction type
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Other restrictionsOther 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
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Cyfyngiadau DefnyddioUse constraints type
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Other restrictionsOther 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
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Dynodydd FfeilFile Identifier
- 4f4c4942-4343-5764-6473-313234373334 XML
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Laith MetadataMetadata Language
- English
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Math o adnoddResource type
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DatasetDataset
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Dyddiad MetadataMetadata Date
- 2026-09-29T15:36:55.704Z
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Enw Safonol MetadataMetadata Standard Name
- NRW
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Fersiwn MetadataMetadata Standard Version
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1.0