D1698/001/01 - Freshwater Lamprey Survey Data (Records from the Cofnod area)
| Subject |
Fish |
| Abstract |
River lamprey (Lampetra fluviatilis), Brook lamprey (Lampetra planeri), and Sea lamprey (Petromyzon marinus) are designated features of various Special Areas of Conservation (SAC). 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 Gateway. As of April 1st 2013, all of the Countryside Council for Wales' (CCW) data is held and managed by Natural Resources Wales (NRW).
Includes some records of other fish species. |
| Species Groups |
Bony Fish (Actinopterygii) [29], Jawless Fish (Agnatha) [224] |
| Geographic Coverage/Site Name |
General: Wales |
| Geographic Coverage Notes |
River Catchments of the Dee, Tywi, Teifi, Cleddau, Usk and Wye. |
| Dataset Owner |
Natural Resources Wales |
| Dataset Contact |
Monica Jones |
| Date Range |
1985 - 2011 |
| Total Records |
253 |
| Restriction Details |
Standard Restrictions Only
|
| Acknowledgements |
Cyfoeth Naturiol Cymru/Natural Resources Wales (NBN Download) |
Further Details
| Original Title |
Freshwater Lamprey Survey Data |
| Temporal Coverage Notes |
1985 - 2011 |
| Module Description |
Records from the Cofnod area |
| Purpose |
The data was collated to help show the distribution of Lamprey species in Welsh SACs and to aid the reporting requirements of the Habitats Directive by publishing this data on the NBN Gateway. |
| Capture Methods |
Lamprey populations and condition assessment was previously carried out by CCW in 2003 (Harvey and Cowx, 2003) and 2005 (Campbell et al., 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 thee times whilst sub-optimal habitats were sampled once. The original data contains positive and negative samples. |
| Verification/Validation Procedures |
High. Recognised specialists carried out all work under contract to CCW and the Environment Agency. |
| Dataset Category |
Category 03: Dataset originates from other trusted source |
| Dataset Status |
Not Known |
| Data Entry Project Completion Date |
N/A |
| Date Imported |
08/09/2016 |
|