Lamprey Habitat Assessement in the River Usk 1999

The River Usk has been notified as a Site of Special Scientific Interest (SSSI) and designated as a Special Area of Conservation (SAC). The three lamprey species that occur within the river are all listed in Annex II of the EU Habitats Directive.


The aim of this study was to investigate the status of lampreys in the River Usk and to consider issues relevant to their conservation. The specific objectives of the study were:


To define the characteristics of lamprey spawning and nursery habitats.

To obtain and summarise information on the distribution of lampreys and their spawning and nursery habitats within the River Usk.

To investigate the potential for using River Habitat Survey (RHS) data to predict the occurrence of lampreys in the River Usk.

To make recommendations to support the monitoring and conservation of lampreys and their habitats.

To monitor the status of lampreys in order to comply with the reporting requirements of the Habitats Directive.

Identification

Identifier
NRW_DS112571
Alternative Title
  • Lamprey Habitat Assessment in the River Usk 1998 - CCW - Report No. 365 CCW000280000000C
  • Lamprey Habitat Assessement using RHS in the River Usk
Metadata Language
English
Lineage

Distribution of lampreys was determined by electric fishing at 44 sites throughout the main river and selected tributaries, and potential obstructions to upstream migration were assessed. Confidence in this dataset is high.
Dataset Reference Date (Publication)
1999-12-31

Temporal Extent

Begin date
1998-08-11
End date
1998-09-03
 
Topic category
  • Environment
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  APEM Ltd -
APEM Remote Sensing, Riverview, A17 Embankement Buisness Park, Heaton Mersey, Stockport, SK4 3GN
http://www.apemltd.co.uk
 

Extent

Extent

Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Distribution

Format Type and Description
  • Documents ( Unknown )

    Specification

    Final report in Microsoft Word format

  • Binary ( Unknown )

    Specification

    Raw data workbook in Excel format

  • Database ( Unknown )

    Specification

    Species data held within Recorder (CCW000280000000C)

 

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

Distribution of lampreys was determined by electric fishing at 44 sites throughout the main river and selected tributaries, and potential obstructions to upstream migration were assessed. 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
  • Agnatha
  • lampreys (river lamprey, brook lamprey and sea lamprey)
  • petromyzon marinus
  • sea lamprey
  • lampetra fluviatilis
  • river lamprey
  • lampetra planeri
  • brook lamprey
  • substratum
  • SSSI (Sites of Special Scientific Interest)
  • Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
  • River Usk
  • River Habitat Survey (RHS)
  • spawning sites
  • nursery habitat
  • electrofishing
  • population density
  • age structure
  • river management
  • fish (fishes) (see also specific species)
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

Lamprey habitat assessment using RHS in the river Usk
 

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 1999 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
4f4c4942-4343-5764-6473-313132353731 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
2026-10-01T13:52:13.552Z
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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