Special Area of Conservation (SAC) Monitoring: Lamprey in the River Dee (2004)
River, Brook and Sea Lamprey are a designated (Annex II) feature of the River Dee SAC. Assessments of species composition, distribution, abundance and size class composition are of particular interest as an indication of Condition Assessment. The data was collected to help assess the conservation status of Lampreys in the Dee Catchment. Monitoring of the status of Lampreys is required to comply with the reporting requirements of the Habitats Directive. The dataset is made up of a collation of historical data, recorded during the Environment Agency Wales juvenile salmon surveys from 1985 - 2004 and surveys conducted as part of the Countryside Council for Wales project 2002 - 2004. Within the historical data, information has not been broken down to a species or genus level and is only recorded at the family level. Historical records collected 1985 - 2002 were sampled by electro-fishing according to protocols laid out by the \Environment Agency Electric Fishing - Theory and Practice Manual\" (Environment Agency 1998). Sampling was either Quantitative or Semi-quantitative or Timed surveys; precise dates are not given and records are assigned a year only."
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS107949
- Alternative Title
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- Lamprey Monitoring, Dee Catchment 2004 - CCW - RoC Report No. 18 CCW0002800000009
- Data Monitro Llysywod Afon Dyfrdwy, 2004
- Metadata Language
- English
- Lineage
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In 2002 a semi-quantitative methodology was used, a stretch of river was sampled until either 200 ammocoetes were caught or two hours had elapsed. In 2003 a quantitative methodology was used employing a rigid quadrat framework with a base of 1m2 according to the protocol developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003) . The number of ammocoetes were recorded against sizes classes at a 10mm interval. Sampling from 2004 was also carried out according to protocol developed by Harvey and Coxw and 31 sites were planned to be surveyed between August and October, however due to weather constrains only 3 of these sites were sampled. Only positive records have been uploaded to Recorder and therefore the NBN Gateway.
- Additional Information
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Rivers Ecologist, NRW. Further information is available in CCW Review of Consents Report No. 18. River Dee Catchment. 1985 - 2004.
- Dataset Reference Date (Publication)
- 2004-12-31
Temporal Extent
- Begin date
- 1985-01-01
- End date
- 2004-12-31
- Topic category
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- Biota
Extent
Extent
- Geographic Extent
- SIR Y FFLINT - FLINTSHIRE
- Geographic Extent
- POWYS - POWYS
- Geographic Extent
- GWYNEDD - GWYNEDD
- Geographic Extent
- SIR DDINBYCH - DENBIGHSHIRE
- Geographic Extent
- CONWY - CONWY
- Geographic Extent
- WRECSAM - WREXHAM
))
Distribution
- Format Type and Description
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Database
Database
()
- Specification
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Data is Archived under Project Numbers: 174, 294 Media Numbers: 508, 1197 [A] Word document of the report and PDF Report held in Ffynnon DCT-10-027789 [B] Spreadsheets of appendices associated with the report [C] JPEG of Maps and Figures within the report [D] Record Sheets JPEG [E] Map Info files [F] ArcGIS files
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Database
Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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In 2002 a semi-quantitative methodology was used, a stretch of river was sampled until either 200 ammocoetes were caught or two hours had elapsed. In 2003 a quantitative methodology was used employing a rigid quadrat framework with a base of 1m2 according to the protocol developed for the LIFE in UK Rivers project (Harvey and Cowx, 2003) . The number of ammocoetes were recorded against sizes classes at a 10mm interval. Sampling from 2004 was also carried out according to protocol developed by Harvey and Coxw and 31 sites were planned to be surveyed between August and October, however due to weather constrains only 3 of these sites were sampled. Only positive records have been uploaded to Recorder and therefore the NBN Gateway.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- lampreys (river lamprey, brook lamprey and sea lamprey)
- Special Area of Conservation Monitoring
- lampetra fluviatilis
- river lamprey
- lampetra planeri
- brook lamprey
- petromyzon marinus
- Lampetra sp.
- sea lamprey
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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River Dee candidate special area of conservation lamprey survey 2004
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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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
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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.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313037393439 XML
- Metadata Language
- English
- Parent Identifier
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Freshwater River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri) and Sea lamprey (Petromyzon marinus) Survey Data
NRW_DS116345
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:43:40.513Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0