SAC Monitoring: Lamprey Monitoring for the Rivers Tywi, Teifi and Cleddau (2004-2005)
Data Monitro Llysywod Afonydd Tywi, Teifi a Chleddau, 2005

  • English
  • wel
  • All

River, brook, and sea lamprey are designated Annex II features of the River Tywi, River Teifi, and Cleddau Rivers Special Areas of Conservation (SACs). Assessments of the species composition, distribution, abundance, and size structure of these species within these river systems are of particular importance for condition assessment. The data were collected to support the assessment of the conservation status of lampreys within the Tywi, Teifi, and Cleddau SACs. Monitoring the status of lamprey populations is required to comply with the reporting requirements of the Habitats Directive.


A total of 112 sampling sites across the River Tywi, River Teifi, and the Eastern and Western Cleddau were surveyed, of which 77 contained positive records for either river lamprey or brook lamprey.

Identification

Dynodydd
Identifier
NRW_DS107907
Teitl Amgen
Alternative Title
  • Lamprey Monitoring, Tywi, Teifi & Cleddau Catchments 2004 - CCW - RoC Report no. 7 CCW0002800000008
Laith Metadata
Metadata Language
English
Lineage

The sampling strategy for the monitoring programme for sea, river, and brook lamprey followed the protocols developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003). Quantitative quadrat surveys were carried out in both optimal (very silty) and sub-optimal (more rocky) habitats. Electrofishing techniques were used within a 1 m² quadrat to draw lamprey from the silt rather than stunning and trapping them within it.


Sampling of optimal habitat quadrats was undertaken three times, whilst sub-optimal habitat quadrats were sampled once. The original dataset contains both positive and negative records.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2005-04-30

Temporal Extent

Begin date
2004-11-01
End date
2004-11-30
 
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
  Environment Agency Wales (EA Wales) -
Cambria House, 29 Newport Road, Cardiff, CF24 0TP, Wales
www.environment-agency.gov.uk
 

Extent

Extent

Hyd
Geographic Extent
SIR CEREDIGION - CEREDIGION
Hyd
Geographic Extent
SIR GAERFYRDDIN - CARMARTHENSHIRE
Hyd
Geographic Extent
SIR BENFRO - PEMBROKESHIRE
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Dosbarthiad
Distribution

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

    Specification

    Final report held in Microsoft Word format.

  • Delimited ( Unknown )

    Specification

    Raw survey data workbook held in Microsoft Excel format.

  • Geographic Information System ( Unknown )

    Specification

    GIS layers used to produce the maps contained within the report, held in MapInfo TAB format.

  • Image ( Unknown )

    Specification

    Survey photographs and associated images held in JPEG format.

  • Database ( Unknown )

    Specification

    Species data held in Recorder 6 under reference CCW0002800000008: Lamprey Monitoring, Tywi, Teifi and Cleddau Catchments 2004, CCW RoC Report No. 7.

 

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 sampling strategy for the monitoring programme for sea, river, and brook lamprey followed the protocols developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003). Quantitative quadrat surveys were carried out in both optimal (very silty) and sub-optimal (more rocky) habitats. Electrofishing techniques were used within a 1 m² quadrat to draw lamprey from the silt rather than stunning and trapping them within it.


Sampling of optimal habitat quadrats was undertaken three times, whilst sub-optimal habitat quadrats were sampled once. The original dataset contains both positive and negative records.
 

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
  • petromyzon marinus
  • Tywi estuary
  • lampetra fluviatilis
  • river lamprey
  • lampetra planeri
  • brook lamprey
  • sea lamprey
  • Cleddau estuary
  • Special Area of Conservation Monitoring
  • Teifi
  • Lampetra sp.
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

Lamprey survey on the rivers Tywi, Teifi and Cleddau
 

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 2004. 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

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313037393037 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Freshwater River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri) and Sea lamprey (Petromyzon marinus) Survey Data

NRW_DS116345
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-09-29T11:32:47.702Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
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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