SAC Monitoring: Shad Egg Survey River Usk and River Wye (2012)
The River Usk and Wye are designated as a Special Area of Conservation (SAC) under the EC 92/43/EEC Habitats Directive for several features including twaite shad (Alosa fallax) and allis shad (Alosa alosa). Shads are migratory members of the Clupeidae (herring family) that ascend rivers to spawn in late spring. The populations of both species are threatened in Europe mainly due to obstructions to migration and issues surrounding water quality. In the UK, significant populations of shad spawn in the Rivers Severn, Usk, Wye and Tywi. The River Usk and Wye have been designated as a Special Area of Conservation (SAC) for shads and other features including salmon, lampreys and bullhead. The purpose of this data capture was to assist with the assessment of Favourable Conservation Status along the Usk and Wye to supplement the main shad spawning distribution condiftion assessment for the Usk (previous surveys conducted in 2010 and 2011) and the Wye (previous surveys were conducted in 2011). 7 sites were chosen along the length of the River Usk and 10 along the length of the River Wye. Both surveys were conducted between high river flows events, and work was carried out by qualified Countryside Council for Wales monitoring staff.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS115294
- Teitl Amgen
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- Arolwg o Wyau Herlynod a Gwangod Afon Wysg ac Afon Gwy 2012
- Laith Metadata
- English
- Datganiad
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Data is collected according to JNCC published guidance on Common Standards Monitoring of Freshwater Fauns (JNCC, 2005). The distribution of spawning shad within each river catchments are assessed using a kick sampling technique for eggs conducted in the spring.
- Gwybodaeth ychwanegol
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Freshwater Monitoring Co-ordinator, NRW. Further information can be found in Countryside Council for Wales Staff Science Report 13/8/3.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2013-06-30
Rhychwant
Rhychwant
- Hyd
- SIR FYNWY - MONMOUTHSHIRE
- Hyd
- POWYS - POWYS
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Dosbarthiad
- Fformat - Math a Disgrifiad
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Database
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- Math
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[A] The final report in Microsoft Word and Adobe PDF formats. [B] A full set of images produced in JPEG format [C] Raw data workbook in excel format [D]Species data held in Recorder 6 as CCW000800000000Q. [E] A series of GIS layers in MapInfo format. [F] Field notes in paper and PDF Format
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Database
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Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
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Data is collected according to JNCC published guidance on Common Standards Monitoring of Freshwater Fauns (JNCC, 2005). The distribution of spawning shad within each river catchments are assessed using a kick sampling technique for eggs conducted in the spring.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
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- Shad
- River Usk
- Special Areas of Conservation (SAC) - SAC monitoring
- alosa alosa
- allis shad
- alosa fallax
- twaite shad
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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River Usk and River Wye shad egg survey 2012
- Teitlau cysylltiedig CNC
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River Usk shad egg survey 2010
- Teitlau cysylltiedig CNC
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River Usk shad egg survey 2011
- Teitlau cysylltiedig CNC
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River Wye shad egg survey 2011
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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© CNC/NRW 2012. 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
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313135323934 XML
- Laith Metadata
- English
- Dynodydd Rhiant
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Condition monitoring of Special Areas of Conservation (SACs) in Wales
NRW_DS110194
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:42:43.353Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0