SAC Monitoring: Shad Monitoring Data for Rivers Wye, Usk and Tywi (2006)
Data Monitro Gwangod Afonydd Gwy, Wysg a Thywi, 2006

  • English
  • wel
  • All

The purpose of this data capture was to monitor the Rivers Wye, Usk, and Tywi for the presence of shad. These rivers are designated as Special Areas of Conservation (SACs), partly because they support internationally important populations of twaite shad. Allis shad is also a feature of these sites and is a secondary reason for their selection as SACs. Records of other freshwater and estuarine fish species are also included within this dataset.


This dataset provides a collation of existing knowledge, habitat data, and shad records, and supplies evidence to support the design and implementation of a suitable juvenile monitoring programme for condition assessment. There were five survey sites along the River Usk, five along the River Wye, and five along the River Tywi.


Additional data are available in paper format within the associated report, including historical egg survey records dating back to 1980. These historical data were collated from the Environment Agency.

Identification

Dynodydd
Identifier
NRW_DS107792
Teitl Amgen
Alternative Title
  • Shad Monitoring, Usk, Wye & Tywi Catchments 2006 - CCW - Report no.40 CCW0002800000005
Laith Metadata
Metadata Language
English
Lineage

The data were collated from a variety of sources, including Excel spreadsheets containing 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 again in July 2006, in accordance with the protocols described by Hillman et al. (2003). Each sample station was netted multiple times, and counts were recorded for each sampling event. All fish were measured, and a subsample was identified to species using gill raker counts. Confidence in this dataset is high, as the surveys were undertaken by experienced staff.
Additional Information

Further information is available in Countryside Council for Wales Environmental Monitoring Report no.40.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2007-01-31

Temporal Extent

Begin date
1980-01-01
End date
2006-07-21
 
Categori pwnc
Topic category
  • Biota
    Biota
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Hull International Fisheries Institute -
University of Hull, Cottingham Road, Hull, HU6 7RX
http://www2.hull.ac.uk/
 

Extent

Extent

Hyd
Geographic Extent
England (ENG)
Hyd
Geographic Extent
SIR FYNWY - MONMOUTHSHIRE
Hyd
Geographic Extent
SIR GAERFYRDDIN - CARMARTHENSHIRE
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Delimited ( Unknown )

    Specification

    Species survey data and associated monitoring records held in Microsoft Excel spreadsheets.

  • Documents ( Unknown )

    Specification

    Shad Monitoring, Usk, Wye and Tywi Catchments 2006 (CCW Report No. 40; Reference: CCW0002800000005).

  • Database ( Unknown )

    Specification

    Species records and sample locations held in Recorder 6.

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
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

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

The data were collated from a variety of sources, including Excel spreadsheets containing 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 again in July 2006, in accordance with the protocols described by Hillman et al. (2003). Each sample station was netted multiple times, and counts were recorded for each sampling event. All fish were measured, and a subsample was identified to species using gill raker counts. Confidence in this dataset is high, as the surveys were undertaken by experienced staff.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

NRW Thesaurus
  • allis shad
  • alosa fallax
  • twaite shad
  • bullhead
  • herring
  • esox lucius
  • brown trout
  • Special Areas of Conservation (SAC) - SAC monitoring
  • cottus gobio
  • bass
  • alosa alosa
  • european eel
  • salmo trutta
  • river Tywi (afon Tywi)
  • dicentrarchus labrax
  • pike
  • salmo salar
  • anguilla anguilla
  • River Wye (Afon Gwy)
  • Lampetra sp.
  • clupea harengus
  • River Usk
  • Atlantic salmon
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Shad monitoring and assessment of conservation condition in the Wye, Usk and Tywi SACs
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
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

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© 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.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313037373932 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Freshwater Shad Monitoring Data

NRW_DS116346
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-09-29T10:51:24.788Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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