A survey to determine the status of the Depressed River Mussel Pseudanodonta complanata at eight monitoring stations within the River Wye (Lower Wye) SSSI in 2022
Data from a survey of the River Wye taken over a 3 day period from August 17th - 19th 2022. Sampling methodology followed that established in the previous survey in 2007, with eight monitoring sites visited from Backney Common (north of Ross-on-Wye) downstream to Bigsweir covering a 50km stretch of the River Wye. At each site, 60-minute visual surveys were undertaken in the river using a bathyscope to spot mussels buried in sediments or dislodged from them using a pronged rake. The number of mussels located during that period were counted, measured, photographed and then returned to the river.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS161313
- Metadata Language
- English
- Lineage
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Experience gained by the contractor during the 2007 P. complanata survey were adopted to take account of the particular behaviours of the mussel in the Lower Wye. These included their relative scarcity, patchy distribution and habit of living deeply buried (often in small groups) in coarse sand between gravel and cobbles. Search technique involved the use of a bathyscope (‘glass-bottomed bucket’) to visually search the riverbed whilst wading in water depths to about 1.2m whilst wearing chest waders and a flotation aid.
- Additional Information
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Willing, M.J. 2024. A survey to determine the status of the Depressed River Mussel Pseudanodonta complanata at eight monitoring stations within the River Wye (Lower Wye) SSSI in 2022. NRW Evidence Report No. 846. 47pp. Natural Resources Wales, Bangor.
- Dataset Reference Date (Creation)
- 2024-11-01
Temporal Extent
- Begin date
- 2024-08-17
- End date
- 2024-08-19
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- Wales (WLS)
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Distribution
- Format Type and Description
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Delimited
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- Specification
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Data Stored on WID Database
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Delimited
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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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Experience gained by the contractor during the 2007 P. complanata survey were adopted to take account of the particular behaviours of the mussel in the Lower Wye. These included their relative scarcity, patchy distribution and habit of living deeply buried (often in small groups) in coarse sand between gravel and cobbles. Search technique involved the use of a bathyscope (‘glass-bottomed bucket’) to visually search the riverbed whilst wading in water depths to about 1.2m whilst wearing chest waders and a flotation aid.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- mussels
- River Wye (Afon Gwy)
- Type
- Theme
Citation
- Date (Publication)
- 2025-01-08
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- noLimitations
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