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.

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

Geographic Extent: Wales (WLS)

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)

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

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

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

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

NRW Related Title: Lamprey habitat assessment using RHS in the river Usk

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

Licence

Other constraints: Open Government Licence

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

Access the portal

Full access to the portal and metadata.

Lamprey Habitat Assessement in the River Usk 1999

Identification

Temporal Extent

Extent

Extent

Distribution

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Attribution Statement

Licence

Metadata

Metadata

Publishing Body