Data Monitro Llysywod Afonydd Tywi, Teifi a Chleddau, 2005
River, brook, and sea lamprey are designated Annex II features of the River Tywi, River Teifi, and Cleddau Rivers Special Areas of Conservation (SACs). Assessments of the species composition, distribution, abundance, and size structure of these species within these river systems are of particular importance for condition assessment. The data were collected to support the assessment of the conservation status of lampreys within the Tywi, Teifi, and Cleddau SACs. Monitoring the status of lamprey populations is required to comply with the reporting requirements of the Habitats Directive.
A total of 112 sampling sites across the River Tywi, River Teifi, and the Eastern and Western Cleddau were surveyed, of which 77 contained positive records for either river lamprey or brook lamprey.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS107907
- Teitl Amgen
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- Lamprey Monitoring, Tywi, Teifi & Cleddau Catchments 2004 - CCW - RoC Report no. 7 CCW0002800000008
- Laith Metadata
- English
- Datganiad
-
The sampling strategy for the monitoring programme for sea, river, and brook lamprey followed the protocols developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003). Quantitative quadrat surveys were carried out in both optimal (very silty) and sub-optimal (more rocky) habitats. Electrofishing techniques were used within a 1 m² quadrat to draw lamprey from the silt rather than stunning and trapping them within it.
Sampling of optimal habitat quadrats was undertaken three times, whilst sub-optimal habitat quadrats were sampled once. The original dataset contains both positive and negative records.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2005-04-30
Ystod amser
- Dyddiad cychwyn
- 2004-11-01
- Dyddiad gorffen
- 2004-11-30
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- SIR CEREDIGION - CEREDIGION
- Hyd
- SIR GAERFYRDDIN - CARMARTHENSHIRE
- Hyd
- SIR BENFRO - PEMBROKESHIRE
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
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Documents
(
Unknown
)
- Math
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Final report held in Microsoft Word format.
-
Delimited
(
Unknown
)
- Math
-
Raw survey data workbook held in Microsoft Excel format.
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Geographic Information System
(
Unknown
)
- Math
-
GIS layers used to produce the maps contained within the report, held in MapInfo TAB format.
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Image
(
Unknown
)
- Math
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Survey photographs and associated images held in JPEG format.
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Database
(
Unknown
)
- Math
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Species data held in Recorder 6 under reference CCW0002800000008: Lamprey Monitoring, Tywi, Teifi and Cleddau Catchments 2004, CCW RoC Report No. 7.
-
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
-
The sampling strategy for the monitoring programme for sea, river, and brook lamprey followed the protocols developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003). Quantitative quadrat surveys were carried out in both optimal (very silty) and sub-optimal (more rocky) habitats. Electrofishing techniques were used within a 1 m² quadrat to draw lamprey from the silt rather than stunning and trapping them within it.
Sampling of optimal habitat quadrats was undertaken three times, whilst sub-optimal habitat quadrats were sampled once. The original dataset contains both positive and negative records.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- petromyzon marinus
- Tywi estuary
- lampetra fluviatilis
- river lamprey
- lampetra planeri
- brook lamprey
- sea lamprey
- Cleddau estuary
- Special Area of Conservation Monitoring
- Teifi
- Lampetra sp.
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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Lamprey survey on the rivers Tywi, Teifi and Cleddau
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
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© CNC/NRW 2004. 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
- 4f4c4942-4343-5764-6473-313037393037 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
- 2026-09-29T11:32:47.702Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0