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.

Identification

Identifier
NRW_DS115294
Alternative Title
  • Arolwg o Wyau Herlynod a Gwangod Afon Wysg ac Afon Gwy 2012
Metadata Language
English
Lineage

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.
Additional Information

Freshwater Monitoring Co-ordinator, NRW. Further information can be found in Countryside Council for Wales Staff Science Report 13/8/3.
Dataset Reference Date (Publication)
2013-06-30
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Countryside Council for Wales (CCW)
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Geographic Extent
SIR FYNWY - MONMOUTHSHIRE
Geographic Extent
POWYS - POWYS
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Format Type and Description
  • Database ()

    Specification

    [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

 

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
Degree
false
Lineage

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.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • Shad
  • River Usk
  • Special Areas of Conservation (SAC) - SAC monitoring
  • alosa alosa
  • allis shad
  • alosa fallax
  • twaite shad
Type
Theme

Citation

Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

River Usk and River Wye shad egg survey 2012
NRW Related Title

River Usk shad egg survey 2010
NRW Related Title

River Usk shad egg survey 2011
NRW Related Title

River Wye shad egg survey 2011
 

Constraints

Constraints

Limitations on Public Access and Use

Restriction type
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

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

© 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

File Identifier
4f4c4942-4343-5764-6473-313135323934 XML
Metadata Language
English
Parent Identifier
Condition monitoring of Special Areas of Conservation (SACs) in Wales

NRW_DS110194
Resource type
Dataset
Metadata Date
2024-05-31T09:42:43.353Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

pointOfContact
  Master Reference Data Team
Natural Resources Wales, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 
 

Publishing Body

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