Asesiad o Gynefin y Llysywen Bendoll yn Afon Wysg 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.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS112571
- Teitl Amgen
-
- Lamprey Habitat Assessment in the River Usk 1998 - CCW - Report No. 365 CCW000280000000C
- Lamprey Habitat Assessement using RHS in the River Usk
- Laith Metadata
- English
- Datganiad
-
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.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 1999-12-31
Ystod amser
- Dyddiad cychwyn
- 1998-08-11
- Dyddiad gorffen
- 1998-09-03
- Categori pwnc
-
- Environment
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Documents
(
Unknown
)
- Math
-
Final report in Microsoft Word format
-
Binary
(
Unknown
)
- Math
-
Raw data workbook in Excel format
-
Database
(
Unknown
)
- Math
-
Species data held within Recorder (CCW000280000000C)
-
Documents
(
Unknown
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- 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
- Eglurhad
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
-
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.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
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)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
Lamprey habitat assessment using RHS in the river Usk
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© 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.
Datganiad Priodoli
- Cyfyngiadau eraill
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313132353731 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Freshwater River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri) and Sea lamprey (Petromyzon marinus) Survey Data
NRW_DS116345
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-10-01T13:52:13.552Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0