SAC Monitoring: Shad Monitoring Data for Rivers Wye, Usk and Tywi (2006)
The purpose of this data capture was to monitoring of the Rivers Wye, Usk and Tywi for the presence of Shad. These Rivers are designated as Special Areas of Conservation (SAC) partly because they support internationally important populations of twait shad. Allis Shad is also a feature of the sites and a secondary reason for selection as a SAC. Records of other species of freshwater and estuarine fish are also recorded as part of this dataset. This provides a collation of existing knowledge, habitat and shad data, and provides evidence to design and implement a suitable juvenile monitoring programme for their condition assessment. There were 5 survey sites along the River Usk, 5 sites along the River Wye and 5 sites along the River Tywi. Further data is available in paper format in the associated report with historical records of eggs surveys extending back to 1980. This historical data is collated from the Environment Agency.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS107792
- Alternative Title
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- Shad Monitoring, Usk, Wye & Tywi Catchments 2006 - CCW - Report no.40 CCW0002800000005
- Data Monitro Gwangod Afonydd Gwy, Wysg a Thywi, 2006
- Metadata Language
- English
- Lineage
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The collation of data comes from a variety of sources including excel spreadsheets for data collected in 2006, Recorder surveys uploaded in 2007, and spatially mapped sample locations. Juvenile shad seine netting was undertaken in September and October 2005 and July 2006 in accordance with protocols described by Hillman et al (2003). Each sample station was netted multiple times and counts recorded for each. All fish were measured and a sub sample identified to species, using gill raker counts. The confidence in this dataset is high as it was undertaken by experienced staff.
- Additional Information
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Monitoring and Surveillance Team Leader, NRW Rivers Ecologist, NRW Further information is available in Countryside Council for Wales Environmental Monitoring Report no.40.
- Dataset Reference Date (Publication)
- 2007-01-31
Temporal Extent
- Begin date
- 1980-01-01
- End date
- 2006-07-21
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- England (ENG)
- Geographic Extent
- SIR FYNWY - MONMOUTHSHIRE
- Geographic Extent
- SIR GAERFYRDDIN - CARMARTHENSHIRE
))
Distribution
- Format Type and Description
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Database
Database
()
- Specification
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[A] Species data and locations available in Recorder 6 and on excel spreadsheets. Shad Monitoring, Usk, Wye & Tywi Catchments 2006 - CCW - Report no.40 CCW0002800000005
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Database
Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
-
The collation of data comes from a variety of sources including excel spreadsheets for data collected in 2006, Recorder surveys uploaded in 2007, and spatially mapped sample locations. Juvenile shad seine netting was undertaken in September and October 2005 and July 2006 in accordance with protocols described by Hillman et al (2003). Each sample station was netted multiple times and counts recorded for each. All fish were measured and a sub sample identified to species, using gill raker counts. The confidence in this dataset is high as it was undertaken by experienced staff.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- Special Areas of Conservation (SAC) - SAC monitoring
- river Tywi (afon Tywi)
- River Usk
- allis shad
- alosa alosa
- twaite shad
- alosa fallax
- Lampetra sp.
- european eel
- anguilla anguilla
- Atlantic salmon
- salmo salar
- bullhead
- cottus gobio
- pike
- esox lucius
- bass
- dicentrarchus labrax
- herring
- clupea harengus
- brown trout
- salmo trutta
- River Wye (Afon Gwy)
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Shad monitoring and assessment of conservation condition in the Wye, Usk and Tywi SACs
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 to 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 2006 There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313037373932 XML
- Metadata Language
- English
- Parent Identifier
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Freshwater Shad Monitoring Data
NRW_DS116346
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:42:45.981Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0