SAC Monitoring: Lamprey Monitoring Data for the Rivers Wye and Usk (2007)

River, brook, and sea lamprey are designated features of the River Usk and River Wye Special Areas of Conservation (SACs). Assessments of the species composition, distribution, abundance, and size structure of larval lamprey (ammocoetes and transformers) populations within these rivers are of particular importance for condition assessment. The data were collected to support the assessment of the conservation status of lampreys within the Usk and Wye catchments. Monitoring the status of lamprey populations is required to comply with the reporting requirements of the Habitats Directive.


A total of 54 sites on the River Wye (30 of which contained positive records) and 35 sites on the River Usk (10 of which contained positive records) were sampled.

Identification

Identifier
NRW_DS107902
Alternative Title
  • Lamprey Monitoring, Wye & Usk Catchments 2005 - CCW - Report no. 41 CCW0002800000007
  • Lamprey Monitoring, Wye and Usk Catchments - CCW - Report no. 41
Metadata Language
English
Lineage

The sampling strategy for the monitoring programme for sea, river, and brook lamprey ammocoetes and transformers followed the protocols developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003). Electrofishing was carried out using either quantitative sampling (employing a delimiting rigid framework) or semi-quantitative sampling (where deployment of the framework was not possible, for example in marginal habitats). Three samples were taken at each site.


The densities of both ammocoetes and transformers were recorded for optimal (very silty) and sub-optimal (more rocky) habitats. The source dataset contains both positive and negative records; however, negative records have not been transferred to Recorder 6 or uploaded to the NBN Gateway.
Dataset Reference Date (Publication)
2006-08-31

Temporal Extent

Begin date
2005-11-01
End date
2005-11-26
 
Topic category
  • Biota
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Hull International Fisheries Institute -
University of Hull, Cottingham Road, Hull, HU6 7RX
http://www2.hull.ac.uk/
 

Extent

Extent

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


 
 

Distribution

Distribution

Format Type and Description
  • Documents ( Unknown )

    Specification

    PDF report located in Ffynnon (DCT-08-007379).

  • Delimited ( Unknown )

    Specification

    Lamprey density data held in Microsoft Excel spreadsheet format.

  • Geographic Information System ( Unknown )

    Specification

    Lamprey density GIS layers held in MapInfo TAB format.

  • Database ( Unknown )

    Specification

    Species data held in Recorder 6: Lamprey Monitoring, Wye and Usk Catchments 2005, CCW Report No. 41 (CCW0002800000007).

  • Database ( Unknown )

    Specification

    Archived data held under Project 358, Media Number 1339.

 

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

The sampling strategy for the monitoring programme for sea, river, and brook lamprey ammocoetes and transformers followed the protocols developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003). Electrofishing was carried out using either quantitative sampling (employing a delimiting rigid framework) or semi-quantitative sampling (where deployment of the framework was not possible, for example in marginal habitats). Three samples were taken at each site.


The densities of both ammocoetes and transformers were recorded for optimal (very silty) and sub-optimal (more rocky) habitats. The source dataset contains both positive and negative records; however, negative records have not been transferred to Recorder 6 or uploaded to the NBN Gateway.
 

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
  • river lamprey
  • brook lamprey
  • sea lamprey
  • monitoring (see specific types of monitoring eg. woodland monitoring)
  • lampreys (river lamprey, brook lamprey and sea lamprey)
  • lampetra fluviatilis
  • lampetra planeri
  • Lampetra sp.
  • petromyzon marinus
  • Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
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

Monitoring of Lamprey in the Rivers Wye and Usk SACs 2005-2006
 

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 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

File Identifier
4f4c4942-4343-5764-6473-313037393032 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
2026-09-29T11:29:35.47Z
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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