Freshwater River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri) and Sea lamprey (Petromyzon marinus) Survey Data
River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri), and Sea lamprey (Petromyzon marinus) are designated features of the River Usk and Wye Special Areas of Conservation (SACs). Assessments of species composition, distribution, abundance and size composition of larval lamprey (ammocoetes and transformers) populations in these river are of particular interest as an indication of Condition Assessment. The data was collected to help assess the conservation status of Lampreys in the Usk and Wye Catchments. This collation of lamprey data is made up of data collected by Countryside Council for Wales (CCW) and the Environment Agency Wales for CCW SAC monitoring reports or CCW Review of Consents reports. The collation includes information about species distribution, composition and abundance for river, brook and sea lampreys which are a designated (Annex II) features within SAC rivers in Wales. The majority of the data was recorded at the genus level and no distinction was made between river and brook lampreys. However for some historical data no distinction was made between sea and river/brook lampreys and these were recorded at the family level. This dataset comprises of a number of surveys entered into Recorder 6 which have been packaged for dissemination onto the NBN Atlas.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS116345
- Teitl Amgen
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- Freshwater lamprey Survey Data
- Lamprey Monitoring, Wye and Usk Catchments
- Data Monitro Llysywod Afon Gwy ac Afon Wysg
- Laith Metadata
- English
- Datganiad
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Lamprey populations and condition assessments have previously been carried out by CCW in 2003 and 2005. The field survey was conducted in 2012 by Environment Agency staff using the standard electrofishing methodology. A condition assessment is made using the JNCC Common Standards Monitoring Guidance for Freshwater Fauna. Quantitative quadrat surveys were carried out in both optimal (very silty) and sub-optimal (more rocky) habitats. Electric fishing techniques were used inside a 1m2 quadrat to draw lamprey out of the silt rather than stunning and trapping them within the silt. Sampling of optimal habitats quadrats was done three times whilst sub-optimal habitats were sampled once. The original data contains positive and negative samples. Confidence in this dataset is high.
- Gwybodaeth ychwanegol
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For further information see the survey metadata: 107902 SAC Monitoring: Lamprey Monitoring data for the Rivers Wye and Usk (2007) 107907 SAC Monitoring: Lamprey Monitoring for the Rivers Tywi, Teifi and Cleddau (2004-2005) 107949 SAC Monitoring: Lamprey in the River Dee (2004) 112571 Lamprey Habitat Assessement in the River Usk 1999 115168 SAC Monitoring: Lamprey in the River Usk (2011) 115378 SAC Monitoring: Lamprey Monitoring for the Afon Cleddau (2012) 114807 SAC Monitoring: Lamprey in the River Dee (2011) 114970 SAC Monitoring: Lamprey in the River Tywi (2011)
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2016-08-17
Ystod amser
- Dyddiad cychwyn
- 1985-01-01
- Dyddiad gorffen
- 2015-11-30
- Categori pwnc
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- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
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Database
Database
()
- Math
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[A] Species data is held in Recorder 6.
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Database
Database
()
- Lleolwr Adnoddau
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View and Download Data
World Wide Web page
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
Lamprey populations and condition assessments have previously been carried out by CCW in 2003 and 2005. The field survey was conducted in 2012 by Environment Agency staff using the standard electrofishing methodology. A condition assessment is made using the JNCC Common Standards Monitoring Guidance for Freshwater Fauna. Quantitative quadrat surveys were carried out in both optimal (very silty) and sub-optimal (more rocky) habitats. Electric fishing techniques were used inside a 1m2 quadrat to draw lamprey out of the silt rather than stunning and trapping them within the silt. Sampling of optimal habitats quadrats was done three times whilst sub-optimal habitats were sampled once. The original data contains positive and negative samples. Confidence in this dataset is high.
Allweddeiriau
Allweddair
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NRW Thesaurus
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- river lamprey
- Tawe estuary
- Dee estuary
- Site of Special Scientific Interest (SSSI)
- Cleddau estuary
- Tywi estuary
- Special Areas of Conservation (SAC) - SAC monitoring
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- River Usk
- NBN Atlas
- lampetra fluviatilis
- National Biodiversity Network [NBN]
- lampetra planeri
- sea lamprey
- brook lamprey
- petromyzon marinus
- lampreys (river lamprey, brook lamprey and sea lamprey)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-04-09
Allweddair
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NRW SMNR Keywords
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- Sustainable Management of Natural Resources (SMNR)
- Ecosystem (SMNR)
- Freshwater and Wetlands (SMNR)
- Natural Resources (Incl. Features and Processes) (SMNR)
- Management Areas (SMNR)
- Animals, Plants and Other Organisms (SMNR)
- Water Quality (SMNR)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-03-05
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
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There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
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© CNC/NRW 2011 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.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313136333435 XML
- Laith Metadata
- English
- Dynodydd Rhiant
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Natural Resources Wales (NRW) Species Data on the NBN Atlas
NRW_DS116805
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:38:52.086Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0