4f4c4942-4343-5764-6473-313135313638 English NRW_DS110194 Master Reference Data Team Natural Resources Wales, Maes y Fynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW enquiries@naturalresourceswales.gov.uk http://naturalresourceswales.gov.uk/splash?orig=/ 2026-10-01T14:05:33.709Z NRW 1.0 wel utf8 British National Grid (EPSG::27700) SAC Monitoring: Lamprey in the River Usk (2011) SAC Monitoring: Lamprey in the River Usk (2011) Data gwaith monitro llysywod pendoll ar gyfer Afon Wysg 2011 Lamprey Monitoring, River Usk 2011 - CCW – Science Report No. 11/8/6 CCW000800000000M River Usk Population Attribute Condition Assessment for Brook, River and Sea Lamprey 2011 2012-11-30 NRW_DS115168 http://naturalresources.wales/ River lamprey, brook lamprey, and sea lamprey are listed in Annex II of the EU Habitats Directive (Council Directive 92/43/EEC on the Conservation of Natural Habitats and of Wild Fauna and Flora). Six rivers in Wales, including the River Usk in South Wales, are designated as Special Areas of Conservation (SACs) for lamprey species. The Countryside Council for Wales, and now Natural Resources Wales, is responsible for monitoring the condition of lamprey populations within SACs and ensuring the maintenance of favourable conservation status at designated sites. The main aim of this project was to undertake a condition assessment of the population attribute for the brook lamprey, river lamprey, and sea lamprey SAC features of the River Usk SAC during the second Habitats Directive reporting cycle (2007-2012). A total of 35 survey sites were selected throughout the Usk catchment. Only a small number of sites contained optimal habitat, with sub-optimal habitats predominating across the catchment. Sampling was carried out between 10 October and 16 November 2011. The data are used to assess the population attribute of all three lamprey species. The results of the four attributes outlined in the Common Standards Monitoring (CSM) Guidance for Freshwater Fauna provide an indication of the overall condition of the lamprey populations and contribute to the overall condition assessment. River lamprey, brook lamprey, and sea lamprey are listed in Annex II of the EU Habitats Directive (Council Directive 92/43/EEC on the Conservation of Natural Habitats and of Wild Fauna and Flora). Six rivers in Wales, including the River Usk in South Wales, are designated as Special Areas of Conservation (SACs) for lamprey species. The Countryside Council for Wales, and now Natural Resources Wales, is responsible for monitoring the condition of lamprey populations within SACs and ensuring the maintenance of favourable conservation status at designated sites. The main aim of this project was to undertake a condition assessment of the population attribute for the brook lamprey, river lamprey, and sea lamprey SAC features of the River Usk SAC during the second Habitats Directive reporting cycle (2007-2012). A total of 35 survey sites were selected throughout the Usk catchment. Only a small number of sites contained optimal habitat, with sub-optimal habitats predominating across the catchment. Sampling was carried out between 10 October and 16 November 2011. The data are used to assess the population attribute of all three lamprey species. The results of the four attributes outlined in the Common Standards Monitoring (CSM) Guidance for Freshwater Fauna provide an indication of the overall condition of the lamprey populations and contribute to the overall condition assessment. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Environment Agency Wales (EA Wales) Cambria House, 29 Newport Road, Cardiff, CF24 0TP, Wales enquiries@environment-agency.gov.uk www.environment-agency.gov.uk Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme lampreys (river lamprey, brook lamprey and sea lamprey) petromyzon marinus lampetra planeri Lampetra sp. lampetra fluviatilis brook lamprey sea lamprey river lamprey NRW Thesaurus 2026-08-27 geonetwork.thesaurus.local.theme.converted_nrw-keywords There are no access restrictions to this data. NRW may release, publish or disseminate it freely. no limitations © 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. 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 CCW'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. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English biota SeaVoX Vertical Co-ordinate Coverages 2021-01-06 CASNEWYDD - NEWPORT TOR-FAEN - TORFAEN SIR FYNWY - MONMOUTHSHIRE POWYS - POWYS 3.69325619 -2.84001332 51.53261365 52.06912231 2011-10-10 2011-11-16 (Ffynnon DCT-12-523868) River Usk Population Attribute Condition Assessment for Brook, River and Sea Lamprey 2011. CCW Staff Science Report No. 11/8/6 CCW. Bangor. River usk population attribute condition assessment for brook, river and sea lamprey 2011 Binary Unknown Raw data spreadsheet provided by the Environment Agency; Analysed/worked-up dataset created by Heather Database Unknown Recorder 6 species dataset (Lamprey Monitoring, River Usk 2011 - CCW – Science Report No. 11/8/6 CCW000800000000M) Documents Unknown Report in Word and PDF format; Paper field notes Geographic Information System Unknown GIS layers in MapInfo format Image Unknown Report images, maps, and histograms; Field survey photos 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 2010-12-08 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false Similar work was previously undertaken in 2004/2005. Fieldwork was conducted by Environment Agency staff using standard electrofishing methodologies. Condition assessments were carried out using the JNCC Common Standards Monitoring (CSM) Guidance for Freshwater Fauna. 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 & Cowx, 2003). Quantitative quadrat surveys were undertaken in both optimal (very silty) and sub-optimal (more rocky) habitats. Electrofishing techniques were used within 1 m² quadrats to encourage lamprey to emerge from the silt, rather than stunning and trapping them within the sediment. Sampling of quadrats in optimal habitats was undertaken three times, whereas quadrats in sub-optimal habitats were sampled once only. The original dataset contains both positive and negative samples. Similar work was previously undertaken in 2004/2005. Fieldwork was conducted by Environment Agency staff using standard electrofishing methodologies. Condition assessments were carried out using the JNCC Common Standards Monitoring (CSM) Guidance for Freshwater Fauna. 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 & Cowx, 2003). Quantitative quadrat surveys were undertaken in both optimal (very silty) and sub-optimal (more rocky) habitats. Electrofishing techniques were used within 1 m² quadrats to encourage lamprey to emerge from the silt, rather than stunning and trapping them within the sediment. Sampling of quadrats in optimal habitats was undertaken three times, whereas quadrats in sub-optimal habitats were sampled once only. The original dataset contains both positive and negative samples.