SAC Monitoring: Lamprey in the River Tywi (2011)

River lamprey, brook lamprey, and sea lamprey are listed in Annex II of the EU Habitats Directive (Council Directive 92/43/EEC on the Conservation of Natural Habitats and of Wild Fauna and Flora). Six rivers in Wales, including the Afon Tywi in West Wales, are designated as Special Areas of Conservation (SACs) for lamprey species.


Natural Resources Wales is responsible for monitoring the condition of lamprey populations within SACs and ensuring the maintenance of favourable conservation status at designated sites. The data, originally collected under contract for the former Countryside Council for Wales, are used to assess the population attributes of all three lamprey species.


Sampling was carried out between 5 October and 22 November 2011. A total of 30 survey sites were selected across the Tywi catchment between Llandovery and Carmarthen.

Identification

Identifier
NRW_DS114970
Alternative Title
  • Lamprey Monitoring, Tywi Catchment 2011 - CCW - Staff Science Report 11/8/5 CCW000800000000B
  • Afon Tywi Population Attribute Condition Assessment for Brook, River and Sea Lamprey 2011
Metadata Language
English
Lineage

Field work was conducted by Environment Agency staff using standard electrofishing methodologies. A condition assessment is made using the JNCC 'Common Standards Monitoring (CSM) Guidance for Freshwater Fauna'. Confidence in this dataset is high.
Additional Information

Ffynnon Reference Number: DCT-12-234579 Thomas, RH. and Garrett, H. (2012). Afon Tywi Population Attribute Condition Assessment for Brook, River and Sea Lamprey 2011. CCW Staff Science Report No 11.8/5.
Dataset Reference Date (Publication)
2012-07-31

Temporal Extent

Begin date
2011-11-05
End date
2011-11-22
 
Topic category
  • Biota
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Environment Agency Wales -
Environment Agency Wales, Cambria House, 29 Newport Road, Cardiff, CF24 0TP
http://www.environment-agency.gov.uk/regions/wales
 

Extent

Extent

Geographic Extent
SIR DDINBYCH - DENBIGHSHIRE
Geographic Extent
SIR Y FFLINT - FLINTSHIRE
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Distribution

Format Type and Description
  • Documents ( Unknown )

    Specification

    Microsoft Word report and PDF report

  • Binary ( Unknown )

    Specification

    Excel workbook containing statistics and results

  • Geographic Information System ( Unknown )

    Specification

    MapInfo GIS layers

  • Image ( Unknown )

    Specification

    JPEG images (maps, histograms, scans, field notes)

  • Documents ( Unknown )

    Specification

    Paper field notes

  • Database ( Unknown )

    Specification

    Recorder species dataset

 

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

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

Field work was conducted by Environment Agency staff using standard electrofishing methodologies. A condition assessment is made using the JNCC 'Common Standards Monitoring (CSM) Guidance for Freshwater Fauna'. Confidence in this dataset is high.
 

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
  • lampetra fluviatilis
  • petromyzon marinus
  • sea lamprey
  • lampreys (river lamprey, brook lamprey and sea lamprey)
  • river lamprey
  • Dee estuary
  • lampetra planeri
  • brook lamprey
  • Lampetra sp.
Type
Theme

Citation

Date (Publication)
2026-08-27
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

Afon tywi population attribute condition assessment for brook, river and sea lamprey 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 2011 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.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313134393730 XML
Metadata Language
English
Parent Identifier
Freshwater River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri) and Sea lamprey (Petromyzon marinus) Survey Data

NRW_DS116345
Resource type
Dataset
Metadata Date
2026-10-01T13:57:06.121Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

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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